tencent / dcache

A distributed in-memory NOSQL system based on TARS framework, support LRU algorithm and data persists on back-end database. Users can easily deploy, publish, and scale services on the web interface.

背景

DCache是一个基于TARS框架开发的分布式NoSQL存储系统，数据采用内存存储，支持连接后端DB实现数据持久化。DCache采用集群模式，具有高扩展、高可用的特点。

DCache在腾讯内部有大量业务使用，日访问总量超万亿次。

DCache具有以下特点

• 高性能存储引擎，支持key-value，k-k-row，list，set，zset多种数据结构，支持数据持久化落地后端DB。
• 集群模式，高扩展，高可用，支持异地镜像，就近接入。
• 通过名字访问，支持同步、异步、单向RPC调用。
• 高效运维平台，在线完成服务部署、扩缩容、迁移，以及服务配置，服务调用质量监控。
• 业务无须和直接和mysql交互, DCache会自动缓写DB

支持平台

• Linux

开发语言

• C++

快速上手

DCache的安装建议通过TarsWeb的服务市场安装.

文档

DCache接口使用方法请参考文档Proxy接口指南，更多文档请查看docs目录

目录说明

• src：存储相关的后台服务代码。

目录	功能
src/Comm	各服务共用的通用代码
src/ConfigServer	DCache配置服务
src/DbAccess	数据持久化DB的代理服务
src/KVCacheServer	key-value存储服务
src/MKVCacheServer	k-k-row、list、set、zset存储服务
src/OptServer	服务部署、运维管理，供web管理平台调用
src/PropertyServer	监控信息上报服务
src/Proxy	DCache代理服务
src/Router	DCache路由管理服务
src/TarsComm	Tars数据结构定义

• docs：文档。

数据库说明

DCache框架依赖mysql数据库, 当DCache安装以后, 它自动会创建以下数据库

• db_cache_web: DCache的web依赖
• db_dcache_relation: DCacheOptServer/ConfigServer/PropertyServer/DCacheWebServer依赖, 注意DCacheWebServer只是会创建它, 并不是直接使用它
• db_dcache_property: DCache统计数据库, PropertyServer依赖

需要在安装过程中正确设置配置文件中的数据库的地址.

实际每套创建的每套Cache, 如果设置了数据落地, 那么也依赖mysql, 这个在DCache管理平台上可以设置, 安装时正确配置即可.

参与贡献

如果你有任何想法，别犹豫，立即提 Issues 或 Pull Requests，欢迎所有人参与到DCache的开源建设中。
详见：CONTRIBUTING.md

dcache's Issues

在DCache的ZSet持久化时，遇到的两个问题

hi 我在DCache的ZSet的cache持久化到mysql时遇到两个问题。需要我手动改下数据库的表才可以。
这样正常吗？ 是不是DCache创建数据库表时就创建好呀？

1. 数据库表需要手动添加 sDCacheZSetScore 列。否则会报错。
2. 数据库表的 VALUE列需要设置为主键。否则持久化时只会有一条数据(replace into ...)。

reserved identifier violation

I would like to point out that identifiers like “__CONFIG_SERVER_H_” and “__DBHANDLE_H__” do not fit to the expected naming convention of the C++ language standard.
Would you like to adjust your selection for unique names?

DCache make 失败

make 报错
环境：
gcc 版本 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
CentOS Linux release 7.7.1908 (Core)

[ 70%] Building CXX object test/Proxy/CMakeFiles/libProxy.dir/__/__/src/Proxy/StatThread.cpp.o
[ 71%] Building CXX object test/Proxy/CMakeFiles/libProxy.dir/__/__/src/Proxy/TimerThread.cpp.o
[ 71%] Linking CXX static library ../../lib/liblibProxy.a
[ 71%] Built target libProxy
Scanning dependencies of target test-TimerThreadTest
[ 71%] Building CXX object test/Proxy/CMakeFiles/test-TimerThreadTest.dir/TimerThreadTest.cpp.o
[ 72%] Linking CXX executable ../../bin/test-TimerThreadTest
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘CacheCallbackComm::getThreadData()’中：
ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getThreadDataEv[_ZN17CacheCallbackComm13getThreadDataEv]+0x13)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getThreadDataEv[_ZN17CacheCallbackComm13getThreadDataEv]+0x13b)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘int CacheCallbackComm::getCacheProxy<tars::TC_AutoPtr<DCache::MKCacheProxy> >(std::string const&, std::string const&, std::string&, tars::TC_AutoPtr<DCache::MKCacheProxy>&, std::string const&)’中：
ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_[_ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_]+0x27)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_[_ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_]+0x19e)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘int CacheCallbackComm::getWCacheProxy<tars::TC_AutoPtr<DCache::MKWCacheProxy> >(std::string const&, std::string const&, std::string&, tars::TC_AutoPtr<DCache::MKWCacheProxy>&)’中：
ProxyImp.cpp:(.text._ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_[_ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_]+0x24)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_[_ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_]+0x183)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘CacheCallbackComm::reportException(std::string const&)’中：
ProxyImp.cpp:(.text._ZN17CacheCallbackComm15reportExceptionERKSs[_ZN17CacheCallbackComm15reportExceptionERKSs]+0x1e)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN17CacheCallbackComm15reportExceptionERKSs[_ZN17CacheCallbackComm15reportExceptionERKSs]+0x183)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘CacheCallbackComm::doResponse(int, std::string const&, StatType, tars::TC_AutoPtr<Responser>)’中：
ProxyImp.cpp:(.text._ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE[_ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE]+0x9a)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE[_ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE]+0x337)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘GetKVCallback::callback_getKV(int, DCache::GetKVRsp const&)’中：
ProxyImp.cpp:(.text._ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE[_ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE]+0x53d)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE[_ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE]+0x920)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘SetKVCallback::callback_setKV(int)’中：
ProxyImp.cpp:(.text._ZN13SetKVCallback14callback_setKVEi[_ZN13SetKVCallback14callback_setKVEi]+0x4bd)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN13SetKVCallback14callback_setKVEi[_ZN13SetKVCallback14callback_setKVEi]+0x8a5)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘InsertKVCallback::callback_insertKV(int)’中：
ProxyImp.cpp:(.text._ZN16InsertKVCallback17callback_insertKVEi[_ZN16InsertKVCallback17callback_insertKVEi]+0x4bd)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN16InsertKVCallback17callback_insertKVEi[_ZN16InsertKVCallback17callback_insertKVEi]+0x8a5)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘UpdateKVCallback::callback_updateKV(int, DCache::UpdateKVRsp const&)’中：
ProxyImp.cpp:(.text._ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE[_ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE]+0x45d)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE[_ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE]+0x84e)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘EraseKVCallback::callback_eraseKV(int)’中：
ProxyImp.cpp:(.text._ZN15EraseKVCallback16callback_eraseKVEi[_ZN15EraseKVCallback16callback_eraseKVEi]+0x4ce)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN15EraseKVCallback16callback_eraseKVEi[_ZN15EraseKVCallback16callback_eraseKVEi]+0x78a)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘DelKVCallback::callback_delKV(int)’中：
ProxyImp.cpp:(.text._ZN13DelKVCallback14callback_delKVEi[_ZN13DelKVCallback14callback_delKVEi]+0x4ce)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN13DelKVCallback14callback_delKVEi[_ZN13DelKVCallback14callback_delKVEi]+0x78a)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(ProxyImp.cpp.o)：在函数‘GetZSetScoreCallback::callback_getZSetScore(int, double)’中：
ProxyImp.cpp:(.text._ZN20GetZSetScoreCallback21callback_getZSetScoreEid[_ZN20GetZSetScoreCallback21callback_getZSetScoreEid]+0x4d7)：对‘pthread_getspecific’未定义的引用
ProxyImp.cpp:(.text._ZN20GetZSetScoreCallback21callback_getZSetScoreEid[_ZN20GetZSetScoreCallback21callback_getZSetScoreEid]+0x8a8)：对‘pthread_setspecific’未定义的引用
../../lib/liblibProxy.a(CacheCallbackComm.cpp.o)：在函数‘ThreadKey::KeyInitialize::~KeyInitialize()’中：
CacheCallbackComm.cpp:(.text._ZN9ThreadKey13KeyInitializeD2Ev[_ZN9ThreadKey13KeyInitializeD5Ev]+0xa)：对‘pthread_key_delete’未定义的引用
../../lib/liblibProxy.a(CacheCallbackComm.cpp.o)：在函数‘ThreadKey::KeyInitialize::KeyInitialize()’中：
CacheCallbackComm.cpp:(.text._ZN9ThreadKey13KeyInitializeC2Ev[_ZN9ThreadKey13KeyInitializeC5Ev]+0x17)：对‘pthread_key_create’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<testing::TestPartResultReporterInterface*>::~ThreadLocal()’中：
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED2Ev[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED5Ev]+0x15)：对‘pthread_getspecific’未定义的引用
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED2Ev[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED5Ev]+0x2a)：对‘pthread_key_delete’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocator<testing::internal::TraceInfo> > >::~ThreadLocal()’中：
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED2Ev[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED5Ev]+0x15)：对‘pthread_getspecific’未定义的引用
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED2Ev[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED5Ev]+0x2a)：对‘pthread_key_delete’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocator<testing::internal::TraceInfo> > >::GetOrCreateValue() const’中：
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv]+0x16)：对‘pthread_getspecific’未定义的引用
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv]+0x79)：对‘pthread_setspecific’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<testing::TestPartResultReporterInterface*>::CreateKey()’中：
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE9CreateKeyEv[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE9CreateKeyEv]+0x16)：对‘pthread_key_create’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocator<testing::internal::TraceInfo> > >::CreateKey()’中：
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE9CreateKeyEv[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE9CreateKeyEv]+0x16)：对‘pthread_key_create’未定义的引用
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o)：在函数‘testing::internal::ThreadLocal<testing::TestPartResultReporterInterface*>::GetOrCreateValue() const’中：
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv]+0x16)：对‘pthread_getspecific’未定义的引用
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv]+0x79)：对‘pthread_setspecific’未定义的引用
collect2: 错误：ld 返回 1
make[2]: *** [bin/test-TimerThreadTest] 错误 1
make[1]: *** [test/Proxy/CMakeFiles/test-TimerThreadTest.dir/all] 错误 2
make: *** [all] 错误 2

安装失败

2021-01-08 14:48:48 ====================================================================
2021-01-08 14:48:48 ===dcache-install****===
2021-01-08 14:48:48 ====================================================================
2021-01-08 14:48:48 ===>print config info >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2021-01-08 14:48:48 PARAMS: 172.16.10.180 3306 root 123456 172.16.10.180 3306 root 123456 true 172.16.10.180:3000 7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 172.16.10.180
2021-01-08 14:48:48 TARS_MYSQL_IP: 172.16.10.180
2021-01-08 14:48:48 TARS_MYSQL_PORT: 3306
2021-01-08 14:48:48 TARS_MYSQL_USER: root
2021-01-08 14:48:48 TARS_MYSQL_PASSWORD: 123456
2021-01-08 14:48:48 DCACHE_MYSQL_IP: 172.16.10.180
2021-01-08 14:48:48 DCACHE_MYSQL_PORT: 3306
2021-01-08 14:48:48 DCACHE_MYSQL_USER: root
2021-01-08 14:48:48 DCACHE_MYSQL_PASSWORD: 123456
2021-01-08 14:48:48 CREATE: true
2021-01-08 14:48:48 WEB_HOST: 172.16.10.180:3000
2021-01-08 14:48:48 WEB_TOKEN: 7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618
2021-01-08 14:48:48 WORKDIR: /data/soft/soft/DCache-master/deploy
2021-01-08 14:48:48 NODE_IP: 172.16.10.180
2021-01-08 14:48:48 ===<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< print config info finish.

---

CMAKE_SOURCE_DIR: /data/soft/soft/DCache-master
CMAKE_BINARY_DIR: /data/soft/soft/DCache-master/build
PROJECT_SOURCE_DIR: /data/soft/soft/DCache-master
CMAKE_BUILD_TYPE: Release
PLATFORM: linux
TARS2CPP: /usr/local/tars/cpp/tools/tars2cpp
TARS_MYSQL: ON
TARS_HTTP2: OFF
TARS_SSL: OFF
TARS_WEB_HOST: 172.16.10.180:3000
TARS_TOKEN: 7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618

in src CombinDbAccessServer...
-- Configuring done
-- Generating done
-- Build files have been written to: /data/soft/soft/DCache-master/build
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/ConfigServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/CombinDbAccessServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
DCacheServerGroup/
DCacheServerGroup/KVCacheServer
DCacheServerGroup/
DCacheServerGroup/KVCacheServer
DCacheServerGroup/
DCacheServerGroup/MKVCacheServer
DCacheServerGroup/
DCacheServerGroup/MKVCacheServer
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/DCacheOptServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/PropertyServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/ProxyServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/RouterServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/ConfigServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/CombinDbAccessServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
DCacheServerGroup/
DCacheServerGroup/KVCacheServer
DCacheServerGroup/
DCacheServerGroup/KVCacheServer
DCacheServerGroup/
DCacheServerGroup/MKVCacheServer
DCacheServerGroup/
DCacheServerGroup/MKVCacheServer
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/DCacheOptServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/PropertyServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
tar: Removing leading /' from member names tar: /data/soft/soft/DCache-master/build/ProxyServer: Cannot stat: No such file or directory tar: Exiting with failure status due to previous errors tar: Removing leading /' from member names
tar: /data/soft/soft/DCache-master/build/RouterServer: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
Built target tar
2021-01-08 14:48:54 ===>install DCacheOptServer:
{"data":{"server_conf":{"id":52,"application":"DCache","server_name":"DCacheOptServer","node_name":"172.16.10.180","server_type":"tars_cpp","enable_set":false,"set_name":null,"set_area":null,"set_group":null,"setting_state":"inactive","present_state":"inactive","bak_flag":false,"template_name":"tars.default","profile":"","async_thread_num":3,"base_path":"","exe_path":"","start_script_path":"","stop_script_path":"","monitor_script_path":"","patch_time":"1970-01-01T05:00:00.000Z","patch_version":"","process_id":0,"posttime":"2021-01-08 01:38:21"},"tars_node_rst":[]},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
2021-01-08 14:48:54 ===>install DCacheConfigServer:
{"data":{"server_conf":{"id":53,"application":"DCache","server_name":"ConfigServer","node_name":"172.16.10.180","server_type":"tars_cpp","enable_set":false,"set_name":null,"set_area":null,"set_group":null,"setting_state":"inactive","present_state":"inactive","bak_flag":false,"template_name":"tars.default","profile":"","async_thread_num":3,"base_path":"","exe_path":"","start_script_path":"","stop_script_path":"","monitor_script_path":"","patch_time":"1970-01-01T05:00:00.000Z","patch_version":"","process_id":0,"posttime":"2021-01-08 01:38:21"},"tars_node_rst":[]},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
2021-01-08 14:48:54 ===>install PropertyServer:
{"data":{"server_conf":{"id":54,"application":"DCache","server_name":"PropertyServer","node_name":"172.16.10.180","server_type":"tars_cpp","enable_set":false,"set_name":null,"set_area":null,"set_group":null,"setting_state":"inactive","present_state":"inactive","bak_flag":false,"template_name":"DCache.Cache","profile":"","async_thread_num":3,"base_path":"","exe_path":"","start_script_path":"","stop_script_path":"","monitor_script_path":"","patch_time":"1970-01-01T05:00:00.000Z","patch_version":"","process_id":0,"posttime":"2021-01-08 01:38:21"},"tars_node_rst":[]},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
2021-01-08 14:48:54 ===>install DCacheOptServer.conf:
{"data":{"id":1,"server_name":"DCache.DCacheOptServer","set_name":"","set_area":"","node_name":"","set_group":"","filename":"DCacheOptServer.conf","config":"

\n # admin registry obj\n AdminRegObj = tars.tarsAdminRegistry.AdminRegObj\n \n \n charset = utf8mb4\n dbname = db_tars\n dbhost = 172.16.10.180\n dbport = 3306\n dbuser = root\n dbpass = 123456\n \n \n charset = utf8mb4\n dbname = db_dcache_relation\n dbhost = 172.16.10.180\n dbport = 3306\n dbuser = root\n dbpass = 123456\n \n \n \n # 发布服务线程数\n ThreadCount = 5\n \n \n # 通知node下线服务超时时间(秒)\n Timeout = 20\n # 下线服务备份目录\n BakPath = /data/dcacheuninstall/\n # 下线服务线程数\n ThreadCount = 2\n \n ","level":2,"posttime":"2021-01-08 01:38:21","lastuser":null},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
2021-01-08 14:48:54 ===>install ConfigServer.conf:
{"data":{"id":3,"server_name":"DCache.ConfigServer","set_name":"","set_area":"","node_name":"","set_group":"","filename":"ConfigServer.conf","config":"\n \n dbhost= 172.16.10.180\n dbpass= 123456\n dbuser= root\n dbname= db_dcache_relation\n charset=utf8mb4\n dbport= 3306\n \n ","level":2,"posttime":"2021-01-08 01:38:21","lastuser":null},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
2021-01-08 14:48:54 ===>install PropertyServer.conf:
{"data":{"id":5,"server_name":"DCache.PropertyServer","set_name":"","set_area":"","node_name":"","set_group":"","filename":"PropertyServer.conf","config":"\n \n #可监控属性数量的最大值\n PropertyFieldNum=48\n TbNamePre=t_property_realtime\n AppName=dcache_idc5min_147\n #特性监控数据库信息\n \n dbhost=172.16.10.180\n dbname=db_dcache_property\n dbuser=root\n dbpass=123456\n dbport=3306\n charset=utf8mb4\n \n #db_dcache_relation的数据库信息\n \n charset=utf8mb4\n dbname=db_dcache_relation\n dbhost=172.16.10.180\n dbpass=123456\n dbport=3306\n dbuser=root\n \n \n \n #数据入库的时间间隔，单位分钟\n InsertInterval=5\n \n \n # value1 to value20 for obj and tars server fixed property\n CacheObjAdapter.queue = value1\n WCacheObjAdapter.queue = value2\n BinLogObjAdapter.queue = value3\n RouterClientObjAdapter.queue = value4\n ControlAckObjAdapter.queue = value5\n BackUpObjAdapter.queue = value6\n sendrspqueue = value7\n asyncqueue = value8\n memsize = value9\n reservedPro10 = value10\n reservedPro11 = value11\n reservedPro12 = value12\n reservedPro13 = value13\n reservedPro14 = value14\n reservedPro15 = value15\n reservedPro16 = value16\n reservedPro17 = value17\n reservedPro18 = value18\n reservedPro19 = value19\n reservedPro20 = value20\n # value21 for dcache property\n CacheMemSize_MB = value21\n DataMemUsage = value22\n CacheHitRatio = value23\n TotalCountOfRecords = value24\n ProportionOfDirtyRecords = value25\n CountOfDirtyRecords = value26\n CountOfOnlyKey = value27\n M/S_ReplicationErr = value28\n M/S_ReplicationLatency = value29\n CacheError = value30\n ProgramException = value31\n ReadRecordCount = value32\n WriteRecordCount = value33\n evictedRecordCount = value34\n evictedCountOfUnexpiredRecord = value35\n expiredRecordCount = value36\n ChunkUsedPerRecord = value37\n MaxMemUsageOfJmem = value38\n ProportionOfColdData = value39\n DbError = value40\n DbException = value41\n BackupError = value42\n MKV_MainkeyMemUsage = value43\n \n ","level":2,"posttime":"2021-01-08 01:38:22","lastuser":null},"ret_code":200,"err_msg":""}
2021-01-08 14:48:54
mysql: [Warning] Using a password on the command line interface can be insecure.
2021-01-08 14:48:55 exec_dcache create database db_dcache_relation, ret: 0
mysql: [Warning] Using a password on the command line interface can be insecure.
2021-01-08 14:48:55 exec_dcache create database db_dcache_property, ret: 0
mysql: [Warning] Using a password on the command line interface can be insecure.
2021-01-08 14:48:59 curl 172.16.10.180:3000/api/upload_and_publish?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=ConfigServer -Fcomment=dcache-install
upload and patch err:TypeError: Cannot read property 'map' of undefined
2021-01-08 14:49:01 curl 172.16.10.180:3000/api/upload_and_publish?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=DCacheOptServer -Fcomment=dcache-install
upload and patch err:TypeError: Cannot read property 'map' of undefined
2021-01-08 14:49:03 curl 172.16.10.180:3000/api/upload_and_publish?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=PropertyServer -Fcomment=dcache-install
upload and patch err:TypeError: Cannot read property 'map' of undefined
2021-01-08 14:49:05 curl 172.16.10.180:3000/api/upload_patch_package?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=RouterServer -Fcomment=dcache-install
{"data":{"id":85,"server":"DCache.RouterServer","tgz":"DCache.RouterServer_suse_1610087913327.tgz","comment":"dcache-install","posttime":"2021-01-08 01:38:33"},"ret_code":200,"err_msg":""}
2021-01-08 14:49:06 curl 172.16.10.180:3000/api/upload_patch_package?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=CombinDbAccessServer -Fcomment=dcache-install
{"data":{"id":86,"server":"DCache.CombinDbAccessServer","tgz":"DCache.CombinDbAccessServer_suse_1610087913499.tgz","comment":"dcache-install","posttime":"2021-01-08 01:38:33"},"ret_code":200,"err_msg":""}
2021-01-08 14:49:06 curl 172.16.10.180:3000/api/upload_patch_package?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=ProxyServer -Fcomment=dcache-install
{"data":{"id":87,"server":"DCache.ProxyServer","tgz":"DCache.ProxyServer_suse_1610087913698.tgz","comment":"dcache-install","posttime":"2021-01-08 01:38:33"},"ret_code":200,"err_msg":""}
2021-01-08 14:49:06 curl 172.16.10.180:3000/api/upload_patch_package?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=DCacheServerGroup -Fcomment=dcache-install -Fpackage_type=1
{"data":{"id":88,"server":"DCache.DCacheServerGroup","tgz":"DCache.DCacheServerGroup_suse_1610087913893.tgz","comment":"dcache-install","posttime":"2021-01-08 01:38:33"},"ret_code":200,"err_msg":""}
2021-01-08 14:49:06 curl 172.16.10.180:3000/api/upload_patch_package?ticket=7677d4ecb9a7d5c6c3013defd8ff35ea12b1d618 [email protected] -Fapplication=DCache -Fmodule_name=DCacheServerGroup -Fcomment=dcache-install -Fpackage_type=2
{"data":{"id":89,"server":"DCache.DCacheServerGroup","tgz":"DCache.DCacheServerGroup_suse_1610087914050.tgz","comment":"dcache-install","posttime":"2021-01-08 01:38:34"},"ret_code":200,"err_msg":""}

这是脚本执行时的输出，DCache ConfigServer DCacheOptServer PropertyServer 这三个服务起不来，求大佬指教！！！

limit排序分页

请问类似分页的limit 支持某个字段排序分页吗 看了下源码 好像 不支持某个字段排序分页
都是从hash_map中取的 存储的顺序就是按写入hash_map的顺序吗， 取也是按存储的顺序取的吗

尽管KVCacheServer支持自动淘汰数据，但setKV没有去db找数据，数据一致性缺乏保证

尽管KVCacheServer支持自动淘汰数据，但写数据时（如setKV）没有去db找数据，数据一致性缺乏保证：
如setKV接口，
但是在getKV却会在没找到数据时去db查询，虽然不太熟悉源码，但感觉应该是个bug吧？

EraseThread CPU 100%

kkv的模式下，EraseThread 在只有一个mainkey 装满内存，会死loop。 请问应该怎样处理

tc_multi_hashmap_malloc.cpp:8626
// 将脏数据移动到get链的头部，使可以继续淘汰
if (_pHead->_iGetHead == iAddr)
{
// 既是头也是尾，只有一个元素了
return RT_OK;
}

RouterServer主备状态错误

RouterServer::initialize中，因屏蔽setUpEtcd，导致RouterServer状态总是SLAVE，且未发现有其它地方设置为MASTER。
实际运行报错：

2020-04-28 14:44:52|140129599477504|INFO|RouterImp.cpp:heartBeatReport:256|This is slave, request will proxy to master
2020-04-28 14:44:52|140129599477504|INFO|RouterImp.cpp:updateMasterPrx:916|master router obj =
2020-04-28 14:44:52|140129599477504|ERROR|RouterImp.cpp:updateMasterPrx:920|master router obj not set

版本升级

Tars-framwork已经升级到v2.1.0。
DCache是否有相应的升级计划？

DCache make 时报错

[ 1%] Built target TarsComm
[ 3%] Built target tars-RouterServer
[ 8%] Built target RouterServer
[ 12%] Built target cache_comm
[ 13%] Built target tars-ConfigServer
[ 16%] Built target ConfigServer
[ 16%] Built target tars-CombinDbAccessServer
[ 19%] Built target CombinDbAccessServer
[ 22%] Built target tars-KVCacheServer
[ 34%] Built target KVCacheServer
[ 38%] Built target tars-MKVCacheServer
[ 53%] Built target MKVCacheServer
[ 53%] Built target tars-DCacheOptServer
[ 53%] Built target tars-PropertyServer
[ 56%] Built target PropertyServer
[ 56%] Built target tars-ProxyServer
[ 61%] Built target ProxyServer
[ 66%] Built target DCacheOptServer
[ 71%] Built target libProxy
[ 72%] Linking CXX executable ../../bin/test-TimerThreadTest
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function CacheCallbackComm::getThreadData()': ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getThreadDataEv[_ZN17CacheCallbackComm13getThreadDataEv]+0x13): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getThreadDataEv[_ZN17CacheCallbackComm13getThreadDataEv]+0x13b): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function int CacheCallbackComm::getCacheProxy<tars::TC_AutoPtrDCache::MKCacheProxy >(std::string const&, std::string const&, std::string&, tars::TC_AutoPtrDCache::MKCacheProxy&, std::string const&)':
ProxyImp.cpp:(.text.ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7[ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7]+0x27): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_[_ZN17CacheCallbackComm13getCacheProxyIN4tars10TC_AutoPtrIN6DCache12MKCacheProxyEEEEEiRKSsS7_RSsRT_S7_]+0x19e): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function int CacheCallbackComm::getWCacheProxy<tars::TC_AutoPtr<DCache::MKWCacheProxy> >(std::string const&, std::string const&, std::string&, tars::TC_AutoPtr<DCache::MKWCacheProxy>&)': ProxyImp.cpp:(.text._ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_[_ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT_]+0x24): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text.ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT[ZN17CacheCallbackComm14getWCacheProxyIN4tars10TC_AutoPtrIN6DCache13MKWCacheProxyEEEEEiRKSsS7_RSsRT]+0x183): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function CacheCallbackComm::reportException(std::string const&)':
ProxyImp.cpp:(.text._ZN17CacheCallbackComm15reportExceptionERKSs[_ZN17CacheCallbackComm15reportExceptionERKSs]+0x1e): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN17CacheCallbackComm15reportExceptionERKSs[_ZN17CacheCallbackComm15reportExceptionERKSs]+0x183): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function CacheCallbackComm::doResponse(int, std::string const&, StatType, tars::TC_AutoPtr<Responser>)': ProxyImp.cpp:(.text._ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE[_ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE]+0x9a): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text._ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE[_ZN17CacheCallbackComm10doResponseEiRKSs8StatTypeN4tars10TC_AutoPtrI9ResponserEE]+0x337): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function GetKVCallback::callback_getKV(int, DCache::GetKVRsp const&)':
ProxyImp.cpp:(.text._ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE[_ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE]+0x53d): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE[_ZN13GetKVCallback14callback_getKVEiRKN6DCache8GetKVRspE]+0x920): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function SetKVCallback::callback_setKV(int)': ProxyImp.cpp:(.text._ZN13SetKVCallback14callback_setKVEi[_ZN13SetKVCallback14callback_setKVEi]+0x4bd): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text._ZN13SetKVCallback14callback_setKVEi[_ZN13SetKVCallback14callback_setKVEi]+0x8a5): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function InsertKVCallback::callback_insertKV(int)':
ProxyImp.cpp:(.text._ZN16InsertKVCallback17callback_insertKVEi[_ZN16InsertKVCallback17callback_insertKVEi]+0x4bd): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN16InsertKVCallback17callback_insertKVEi[_ZN16InsertKVCallback17callback_insertKVEi]+0x8a5): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function UpdateKVCallback::callback_updateKV(int, DCache::UpdateKVRsp const&)': ProxyImp.cpp:(.text._ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE[_ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE]+0x45d): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text._ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE[_ZN16UpdateKVCallback17callback_updateKVEiRKN6DCache11UpdateKVRspE]+0x84e): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function EraseKVCallback::callback_eraseKV(int)':
ProxyImp.cpp:(.text._ZN15EraseKVCallback16callback_eraseKVEi[_ZN15EraseKVCallback16callback_eraseKVEi]+0x4ce): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN15EraseKVCallback16callback_eraseKVEi[_ZN15EraseKVCallback16callback_eraseKVEi]+0x78a): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(ProxyImp.cpp.o): In function DelKVCallback::callback_delKV(int)': ProxyImp.cpp:(.text._ZN13DelKVCallback14callback_delKVEi[_ZN13DelKVCallback14callback_delKVEi]+0x4ce): undefined reference to pthread_getspecific'
ProxyImp.cpp:(.text._ZN13DelKVCallback14callback_delKVEi[_ZN13DelKVCallback14callback_delKVEi]+0x78a): undefined reference to pthread_setspecific' ../../lib/liblibProxy.a(ProxyImp.cpp.o): In function GetZSetScoreCallback::callback_getZSetScore(int, double)':
ProxyImp.cpp:(.text._ZN20GetZSetScoreCallback21callback_getZSetScoreEid[_ZN20GetZSetScoreCallback21callback_getZSetScoreEid]+0x4d7): undefined reference to pthread_getspecific' ProxyImp.cpp:(.text._ZN20GetZSetScoreCallback21callback_getZSetScoreEid[_ZN20GetZSetScoreCallback21callback_getZSetScoreEid]+0x8a8): undefined reference to pthread_setspecific'
../../lib/liblibProxy.a(CacheCallbackComm.cpp.o): In function ThreadKey::KeyInitialize::~KeyInitialize()': CacheCallbackComm.cpp:(.text._ZN9ThreadKey13KeyInitializeD2Ev[_ZN9ThreadKey13KeyInitializeD5Ev]+0xa): undefined reference to pthread_key_delete'
../../lib/liblibProxy.a(CacheCallbackComm.cpp.o): In function ThreadKey::KeyInitialize::KeyInitialize()': CacheCallbackComm.cpp:(.text._ZN9ThreadKey13KeyInitializeC2Ev[_ZN9ThreadKey13KeyInitializeC5Ev]+0x17): undefined reference to pthread_key_create'
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocal<testing::TestPartResultReporterInterface*>::~ThreadLocal()': gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED2Ev[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED5Ev]+0x15): undefined reference to pthread_getspecific'
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED2Ev[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEED5Ev]+0x2a): undefined reference to pthread_key_delete' /usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocatortesting::internal::TraceInfo > >::~ThreadLocal()':
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED2Ev[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED5Ev]+0x15): undefined reference to pthread_getspecific' gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED2Ev[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEED5Ev]+0x2a): undefined reference to pthread_key_delete'
/usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocator<testing::internal::TraceInfo> > >::GetOrCreateValue() const': gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv]+0x16): undefined reference to pthread_getspecific'
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE16GetOrCreateValueEv]+0x79): undefined reference to pthread_setspecific' /usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocaltesting::TestPartResultReporterInterface*::CreateKey()':
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE9CreateKeyEv[_ZN7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE9CreateKeyEv]+0x16): undefined reference to pthread_key_create' /usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocal<std::vector<testing::internal::TraceInfo, std::allocatortesting::internal::TraceInfo > >::CreateKey()':
gtest-all.cc:(.text._ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE9CreateKeyEv[_ZN7testing8internal11ThreadLocalISt6vectorINS0_9TraceInfoESaIS3_EEE9CreateKeyEv]+0x16): undefined reference to pthread_key_create' /usr/local/tars/cpp/thirdparty/lib64/libgtest.a(gtest-all.cc.o): In function testing::internal::ThreadLocaltesting::TestPartResultReporterInterface*::GetOrCreateValue() const':
gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv]+0x16): undefined reference to pthread_getspecific' gtest-all.cc:(.text._ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv[_ZNK7testing8internal11ThreadLocalIPNS_31TestPartResultReporterInterfaceEE16GetOrCreateValueEv]+0x79): undefined reference to pthread_setspecific'
collect2: error: ld returned 1 exit status
make[2]: *** [bin/test-TimerThreadTest] Error 1
make[1]: *** [test/Proxy/CMakeFiles/test-TimerThreadTest.dir/all] Error 2
make: *** [all] Error 2

修复：创建应用时出错

https://github.com/TarsCloud/DCache/pull/6

通过企业微信联系我：dannykang

When to support the version of Python or Golang ？

DCache部署后，proxy、router等发布失败，tarspatch会有如下日志输出

2019-04-16 20:15:35|11366|ERROR|PatchImp::preparePatchFile isFileExist file:/usr/local/app/patchs/tars.upload/DCache/DCacheTest1ProxyServer/DCache.ProxyServer_suse_1555396736654.tgz|not exist!

DCache部署过程的一些疑问

1. Cache模块的部署目前只有主备模式吗？是否支持对主备节点进行扩容？
2. DbAccess对接后端存储有计划出操作文档吗？
3. 是否有计划组建交流讨论群？

DCache这个面板显示异常，需要修改什么？

zset 生成的数据库表缺一个字段‘sDCacheZSetScore’

2020-11-24 16:18:05|140437419443968|ERROR|[TC_Mysql::execute]: mysql_real_query: [ replace into db_JSAPPzset_0.t_JSAPPzset_0 (mkey,sDCacheExpireTime,sDCacheZSetScore,value) values ('1st',0,824,'3rd') ] :Unknown column 'sDCacheZSetScore' in 'field list'

添加模块的部分，看不到最后的提交按钮

添加 使用带数据库的模块，到最后一步看不到提交按钮。可能是笔记本的显示不够高。

不能滚动，但是把页面缩小后能看到。

【openEuler】如何更加优雅地将DCache做成RPM包以集成到openEuler操作系统中

DCache作为国内十分优秀的开源项目，码云上 @zhang_donglin1 和 @D_dd 正在尝试将DCache做成RPM包集成到openEuler（国内开源操作系统）中，以更加方便更多人使用。
但是当前遇到一些问题：
由于部署阶段也需要重新编译，导致做rpm包时需要打包源码文件，但是由于rpm包一般只能包括：

0. 可执行文件
1. .so .a文件
2. service服务文件
3. 配置文件和脚本等

所以，当前这个状态下不能将DCache合入到openEuler中。

一些疑惑：
所以我们需要搞清楚为什么install.sh中会再次进行：cmake .. -DTARS_WEB_HOST=WEBHOST−DTARSTOKEN={WEB_TOKEN}
这个部署里面的编译与第一步骤中的编译：mkdir build; cd build; cmake ..; make; make release; make tar 有什么差别？
能不能在第一步编译编译后，install.sh中不再编译，是否可以通过其它配置方式来配置WEB_HOST等？

总结：当前DCache能否比较优雅地打包为一个rpm包，在部署阶段不需要重新编译，rpm包中包含所有需要编译的结果文件？

https://gitee.com/src-openeuler/DCache/pulls/1

KVCacheServer/MKVCacheServer

当KVCacheServer或者MKVCacheServer有更新时，已发布的module如何更新？

迁移过程中的执行路径问题

Router/Transfer.cpp 中，第63行：

int rc = _dbHandle->updateTransferingRecord(transInfoNew,
                                            transInfoComplete,
                                            cleanSrc,
                                            cleanDest,
                                            cleanSrcHasInc,
                                            cleanDestHasInc,
                                            0);

在调用 DbHandle::updateTransferingRecord 函数时，iReturn 参数硬编码为0，且我未能找到其他地方有调用 DbHandle::updateTransferingRecord 这个重载函数，那么 DbHandle.cpp 中，在多次执行后，必然会进入到第1855行的分支，而第1871行到1955行的分支没有路径进入，那么其存在有什么特殊的意义吗？

master宕机后，Router重启，此后不会进行该master主从切换

DCache/src/Router/SwitchThread.cpp

Line 655 in 74d987e

FDLOG("migrate") << __LINE__ << "|" << itrGroupInfo->second.masterLastReportTime

master宕机后，Router重启，此后不会进行该master的主从切换?

DbAcess

DbAcess的配置没放出来呀

校验值接口日志有待改进

校验值接口日志在校验出错时，不打印哪个字段报错，导致字段较多时排查较为耗时，建议可以如截图将字段名也打印出来，体验更好

update与writeBinLog之间未加锁

当有多个update请求时，由于update与writeBinLog之间未加锁,是否会引起BinLog乱序的问题，最终导致备机数据与主机不一致？

启动KVCacheServer失败

日志说

exit: [TC_Config::parseFile]:fopen fail: /usr/local/app/tars/tarsnode/data/DCache.
DCacheAppLoginKVCacheServer1-1/bin//CacheServer.conf :No such file or directory

[fail] get remote config 'CacheServer.conf' error:remote config file is
 empty:CacheServer.conf

Completion of error handling

Would you like to add more error handling for return values from functions like the following?

• pthread_mutex_init ⇒ TransferMutexCond::initMutexCond
• pthread_mutex_lock ⇒ RouterClientCallback::wakeUpWaitingThread

服务创建->发布服务报错

弹出框错误：
1 第一次错误
错误: installApp catch execption:insert relation info catch exception:[TC_Mysql::connect]: mysql_real_connect: Unknown database 'db_dcache_relation'
2 关闭第一次错误后，再次点击发布服务
报错：
错误: installApp catch execption:insert server name:DCache.DcacheTest1RouterServer catch exception:[TC_Mysql::execute]: mysql_query: [ insert into t_config_files (config,config_flag,filename,host,lastuser,level,posttime,server_name) values ('
\n # 应用名称\n AppName=DcacheTest1\n # 数据库配置重新装载最小间隔时间\n DbReloadTime=300000\n # 管理接口的Obj\n AdminRegObj=tars.tarsregistry.AdminRegObj\n \n # 是否开启ETCD为Router集群(Router集群需要利用ETCD来做选举)\n enable=N\n # 所有ETCD机器的IP地址，以分号分割\n host=x.x.x.x:port;x.x.x.x:port\n # ETCD通信请求的超时时间(秒)\n RequestTimeout=3\n # Router主机心跳的维持时间(秒)\n EtcdHbTTL=60\n \n \n # 清理代理的最近未访问时间\n ProxyMaxSilentTime=1800\n # 清理代理的间隔时间\n ClearProxyInterval=1800\n # 轮询迁移数据库的时间\n TransferInterval=3\n # 轮询线程数\n TimerThreadSize=20\n # 等待页迁移的超时时间(毫秒)\n TransferTimeOut=3000\n # 迁移时隔多少页整理一下数据库记录\n TransferDefragDbInterval=50\n # 重新执行迁移指令的时间间隔(秒)\n RetryTransferInterval=1\n # 迁移失败时的最大重试次数\n RetryTransferMaxTimes=3\n # 一次迁移页数\n TransferPagesOnce=10\n # 每个组分配的最小迁移线程数\n MinTransferThreadEachGroup=5\n # 每个组分配的最大迁移线程数\n MaxTransferThreadEachGroup=8\n \n \n # 是否开启cache主备自动切换\n enable=N\n # 自动切换超时的检测间隔(秒)\n SwitchCheckInterval= 10\n # 自动切换的超时时间(秒)\n SwitchTimeOut=60\n # 自动切换执行的线程数(默认1个)\n SwitchThreadSize=50\n # 备机不可读的超时时间(秒)\n SlaveTimeOut=60\n # 主备切换时，主备机binlog差异的阈值(毫秒)\n SwitchBinLogDiffLimit=300\n # 一天当中主备切换的最大次数\n SwitchMaxTimes=3\n # 主备切换时等待主机降级的时间(秒)\n DowngradeTimeout=30\n \n \n \n charset=utf8\n dbname=db_cache_DcacheTest1\n dbhost=172.25.0.2\n dbpass=123456\n dbport=3306\n dbuser=root\n \n \n charset=utf8mb4\n dbname=db_dcache_relation\n dbhost=172.25.0.2\n dbpass=123456\n dbport=3306\n dbuser=root\n \n \n
\n',0,'DcacheTest1RouterServer.conf','','system',2,'2021-06-24 09:58:41','DCache.DcacheTest1RouterServer') ] :Duplicate entry 'DCache.DcacheTest1RouterServer-DcacheTest1RouterServer.conf--2--' for key 'application'

主节点off后，不会重新拉起，也不会主备切换

CMake报错

cmake version 3.10.2
执行cmake时报错：
-- The C compiler identification is GNU 7.5.0
-- The CXX compiler identification is unknown
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
CMake Error at CMakeLists.txt:3 (project):
No CMAKE_CXX_COMPILER could be found.

Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.

有完善文档的计划吗？

文档太少了，希望能多些文档。
比如怎么后接DB，大概看了代码，还没搞清楚怎么使用

性能问题

是否有性能数据的介绍？
如，跟redis或其他缓存的对比？

insertKV代理服务存在bug

Proxy服务中的ProxyImp::insertKV函数中，如下行：
prxWCache->async_setKV(cb, req);
修改为：
prxWCache->async_insertKV(cb, req);

Remove unnecessary null pointer checks

An extra null pointer check is not needed in functions like the following.

• MultiHashMapMallocDCache
• PropertyServer::destroyApp
• ThreadKey::destructor

pagecache 被大量占用

在64G内存的主机上交叉部署7组MKVCacheServer后，每个server分配1G内存，由于没有数据，实际占用内存并不多。2周后发现buffer/cache竟然占用了61G。经过清理，发现pagecache占用了绝大部分内存。
想知道这种情况是否是程序bug？还是可以忽略？

后台管理系统使用的是没有文档的内部VUE框架

后台管理系统使用的是没有文档的内部VUE框架：let-ui ，似乎是腾讯内部的一个前端框架，找遍网络也没有看到ui文档，是否应该换为文档更丰富的开源框架以便二次开发呢？

some DCache servers can't run.

主备切换不好使

场景：手动停止CacheServer的主节点。
Router日志：
2019-10-09 14:05:26|663|doSwitchCheck|SwitchThread::doSwitchCheck find TimeOut groupName:myAppMKVtest2MKVGroup1 masterServerName:DCache.myAppMKVtest2MKVCacheServer1-1 now:1570601126 rePortTime:1
570601062 Timeout:60
2019-10-09 14:05:26|665|doSwitchCheck|1570601126|60|1570601126
2019-10-09 14:05:26|678|doSwitchCheck|moduleName:myAppMKVtest2 | itrGroupInfo: myAppMKVtest2MKVGroup1
2019-10-09 14:05:26|681|doSwitchCheck|
2019-10-09 14:05:26|684|doSwitchCheck|
2019-10-09 14:05:26|695|doSwitchCheck|
2019-10-09 14:05:26|706|doSwitchCheck|master heartbeat overtime
2019-10-09 14:05:26|check server setting state.
2019-10-09 14:05:26|heartBeatSend to masterName:DCache.myAppMKVtest2MKVCacheServer1-1
2019-10-09 14:05:26|652|doSwitchCheck|SwitchThread::doSwitchCheck find master reportTime==0 myAppOneCacheKVGroup1 masterServerName:DCache.myAppOneCacheKVCacheServer1-1
2019-10-09 14:05:26|729|doSwitchCheck|SwitchThread::doSwitchCheck find slave reportTime==0 myAppOneCacheKVGroup1 slaveServerName:DCache.myAppOneCacheKVCacheServer1-2
2019-10-09 14:05:26|652|doSwitchCheck|SwitchThread::doSwitchCheck find master reportTime==0 secondKVGroup1 masterServerName:DCache.secondKVCacheServer1-1
2019-10-09 14:05:26|729|doSwitchCheck|SwitchThread::doSwitchCheck find slave reportTime==0 secondKVGroup1 slaveServerName:DCache.secondKVCacheServer1-2
2019-10-09 14:05:26|652|doSwitchCheck|SwitchThread::doSwitchCheck find master reportTime==0 thirdKVGroup1 masterServerName:DCache.thirdKVCacheServer1-1
2019-10-09 14:05:26|729|doSwitchCheck|SwitchThread::doSwitchCheck find slave reportTime==0 thirdKVGroup1 slaveServerName:DCache.thirdKVCacheServer1-2
2019-10-09 14:05:29|SwitchThread::doSwitch catch exception: [ServantProxy::invoke timeout:3000,servant:DCache.myAppMKVtest2MKVCacheServer1-1.RouterClientObj,func:helloBaby,adaptertcp -h 10.4.120
.136 -p 19046,reqid:5]
2019-10-09 14:05:32|SwitchThread::doSwitch catch exception: [ServantProxy::invoke timeout:3000,servant:DCache.myAppMKVtest2MKVCacheServer1-1.RouterClientObj,func:helloBaby,adaptertcp -h 10.4.120
.136 -p 19046,reqid:6]
2019-10-09 14:05:32|heartBeatSend to slaveName:DCache.myAppMKVtest2MKVCacheServer1-2
2019-10-09 14:05:32|SwitchThread::doSwitch send heartBeat ok ServerName:DCache.myAppMKVtest2MKVCacheServer1-2
2019-10-09 14:05:32|heartBeatSend to slaveName ok:DCache.myAppMKVtest2MKVCacheServer1-2
2019-10-09 14:05:32|query slaveBinlogdif from slaveName:DCache.myAppMKVtest2MKVCacheServer1-2
2019-10-09 14:05:32|SwitchThread:: slaveBinlogdif diffBinlogTime(1570590077) > 300 DCache.myAppMKVtest2MKVCacheServer1-2
2019-10-09 14:05:32|removeSwitchModule moduleName : myAppMKVtest2| switch tasks : 0
控制台上Router服务显示错误信息：
2019-10-09 14:05:32|SwitchThread:: slaveBinlogdif diffBinlogTime(1570590077) > 300 DCache.myAppMKVtest2MKVCacheServer1-2

推测可能是从节点的binlog比主节点的慢了超过300秒，导致切换失败。
分析了下原因，发现两台主机的时钟不同步。（注意：此问题并不能确认是时钟不同步导致，只是排除不合理因素）

问题1：这个错误的具体原因是什么？如果想屏蔽这个错误、保证正常的主备切换，应该修改哪个文件的时间？或者有其他什么方法？

同步了下时钟，待binlog更新后，出现新问题：
Router日志：
2019-10-09 14:08:26|663|doSwitchCheck|SwitchThread::doSwitchCheck find TimeOut groupName:myAppMKVtest2MKVGroup1 masterServerName:DCache.myAppMKVtest2MKVCacheServer1-1 now:1570601306 rePortTime:1
570601243 Timeout:60
2019-10-09 14:08:26|665|doSwitchCheck|1570601306|60|1570601306
2019-10-09 14:08:26|678|doSwitchCheck|moduleName:myAppMKVtest2 | itrGroupInfo: myAppMKVtest2MKVGroup1
2019-10-09 14:08:26|681|doSwitchCheck|
2019-10-09 14:08:26|684|doSwitchCheck|
2019-10-09 14:08:26|695|doSwitchCheck|
2019-10-09 14:08:26|706|doSwitchCheck|master heartbeat overtime
2019-10-09 14:08:26|removeSwitchModule moduleName : myAppMKVtest2| switch tasks : 0
日志中上述内容循环打印，看上去没什么异常，但控制台上Router服务显示错误信息：
DoSwitchThread::doSwitchMaterSlave switch times over the SwitchMaxTimes: 3, so not do switch groupName:myAppMKVtest2MKVGroup1, masterServer:DCache.myAppMKVtest2MKVCacheServer1-1, slaveServer:DCache.myAppMKVtest2MKVCacheServer1-2

切换超过3次没有成功。客户端进行访问时，也是报错超时，实际上没有发生切换。
具体原因不清楚。

从节点CacheServer的日志不断的循环输出如下内容：
2019-10-09 14:18:26|24350|ERROR|[MKBinLogThread::syncCompress] getLogCompress exception:server unknown exception: ret:-10 msg:[ServantProxy::invoke errno:-10,info:,servant:DCache.myAppMKVtest2MKVCacheServer1-1.BinLogObj,func:getLogCompressWithPart,reqid:0]
2019-10-09 14:18:26|24345|ERROR|[TARS][CommunicatorEpoll::handleInputImp] connect error tcp -h 10.4.120.136 -p 19044,DCache.myAppMKVtest2MKVCacheServer1-1.BinLogObj,_connExcCnt=6,Connection refused
2019-10-09 14:18:26|24345|ERROR|[TARS][ObjectProxy::invoke, objname:DCache.myAppMKVtest2MKVCacheServer1-1.ControlAckObj,selectAdapterProxy is null]
2019-10-09 14:18:26|24355|ERROR|HeartBeatThread::Run connect hb exception: server unknown exception: ret:-10 msg:[ServantProxy::invoke errno:-10,info:,servant:DCache.myAppMKVtest2MKVCacheServer1-1.ControlAckObj,func:connectHb,reqid:0]
2019-10-09 14:18:26|24345|ERROR|[TARS][CommunicatorEpoll::handleInputImp] connect error tcp -h 10.4.120.136 -p 19049,DCache.myAppMKVtest2MKVCacheServer1-1.ControlAckObj,_connExcCnt=6,Connectionrefused
其中，10.4.120.136 这个ip是主节点。

问题2：这个错误的具体原因是什么？如何解决？

k-k-row 类型主从数据不同不

某种情况下，k-k-row 类型主从数据不同步

DCache部署后，Cache类型为MKV，具体的Cache服务没有发布的入口

在TarsFramework2.4.0上配置DCache时，Router、Cache、Proxy发布包无法设置为默认

上传发布包后，点击默认，没有任何响应

DCache在安装时，如果模块名字中带有英文句号"."，安装后看不到配置中心

KVCacheServer 编译错误

./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::eraseHashByForce(size_t, C)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:353:65: error: expected primary-expression before ‘>’ token
return _hashMapVec[h%_jmemNum]->eraseHashByForce(h, c);
^
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::eraseHashByForce(size_t, C, std::vector<std::__cxx11::basic_string >&)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:359:63: error: expected primary-expression before ‘>’ token
return _hashMapVec[h%_jmemNum]->eraseHashByForce(h, c, vDelK);
^
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::getHash(size_t, std::vector<std::pair<std::__cxx11::basic_string, std::__cxx11::basic_string > >&, C)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:365:54: error: expected primary-expression before ‘>’ token
return _hashMapVec[h%_jmemNum]->getHash(h, vv, c);
^
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::getHash(size_t, std::vector<typename tars::JmemHashMapMalloc<LockPolicy, StorePolicy>::ToDoFunctor::DataRecord>&, C)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:371:54: error: expected primary-expression before ‘>’ token
return _hashMapVec[h%_jmemNum]->getHash(h, vv, c);
^
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::getHashWithOnlyKey(size_t, std::vector<typename tars::JmemHashMapMalloc<LockPolicy, StorePolicy>::ToDoFunctor::DataRecord>&, C)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:377:65: error: expected primary-expression before ‘>’ token
return _hashMapVec[h%_jmemNum]->getHashWithOnlyKey(h, vv, c);
^
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h: In member function ‘int tars::HashMapMallocDCache<LockPolicy, StorePolicy>::syncOnce(uint32_t, C&)’:
./jmem_hashmap_malloc/dcache_jmem_hashmap_malloc.h:490:56: error: expected primary-expression before ‘>’ token
iRetVec[i] = _hashMapVec[i]->syncOnce(iNowTime, c);

Compile failed...

[root@test1 build]# make
Scanning dependencies of target TarsComm
[ 1%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/TarsComm/CacheShare.tars
[ 1%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/TarsComm/DbAccess.tars
[ 1%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/TarsComm/ProxyShare.tars
[ 1%] Built target TarsComm
Scanning dependencies of target tars-RouterServer
[ 2%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/Router/Router.tars
[ 2%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/Router/RouterClient.tars
[ 3%] /usr/local/tars/cpp/tools/tars2cpp --with-tars /code/DCache-master/src/Router/RouterShare.tars
[ 3%] Built target tars-RouterServer
Scanning dependencies of target RouterServer
[ 3%] Building CXX object src/Router/CMakeFiles/RouterServer.dir/DbHandle.cpp.o
[ 3%] Building CXX object src/Router/CMakeFiles/RouterServer.dir/RouterImp.cpp.o
/code/DCache-master/src/Router/RouterImp.cpp: In member function ?€?virtual void RouterImp::initialize()?€?:
/code/DCache-master/src/Router/RouterImp.cpp:93:50: error: cannot call member function ?€?tars::TC_EpollServerPtr& tars::Application::getEpollServer()?€? without object
TC_Endpoint ep = Application::getEpollServer()->getBindAdapter(adapter)->getEndpoint();
^
make[2]: *** [src/Router/CMakeFiles/RouterServer.dir/RouterImp.cpp.o] Error 1
make[1]: *** [src/Router/CMakeFiles/RouterServer.dir/all] Error 2
make: *** [all] Error 2

创建应用最后一步，点击安装发布无响应

下面是 DCacheOptServer 的错误日志
`2019-07-31 12:29:22|38786|ERROR|[TARS][QueryEpBase::doEndpoints, callback activeEps is empty,objname:DCache.PropertyServer.PropertyObj]
2019-07-31 12:29:27|38786|ERROR|[TARS][ObjectProxy::doTimeout, objname:DCache.PropertyServer.PropertyObj, queue timeout error]
2019-07-31 12:30:23|38786|ERROR|[TARS][QueryEpBase::doEndpoints, callback activeEps is empty,objname:DCache.PropertyServer.PropertyObj]
2019-07-31 12:30:28|38786|ERROR|[TARS][ObjectProxy::doTimeout, objname:DCache.PropertyServer.PropertyObj, queue timeout error]

`

TarsFramework v2.4.7, when creating Application, the IDC area cannot be empty

When creating Application, the IDC area cannot be empty. But I cannot find where to config the IDC area.
创建应用的时候，提示IDC地区参数不能为空，但是又找不到哪里可以配置IDC的地方。而且这个选项也没显示必填项。

when to support the version of Java ？

压测 KVCacheServer 报错

1. 问题出现过程：
   go 程序调用 WCache_IF.go 进行写压测(通过 tars2go 工具编译 WCache.tars 获得), 未出现系统资源吃紧，在并发请求8k路总请求数10w的情况下，服务出现以下报错：
   2019-06-25 15:26:46|15803|ERROR|[TARS]ServantHandle::handle queue timeout:DCache.DCacheApp_oneKVCacheServer1-1.WCacheObj|setKV|1561015603502|600000|3000|1561015606522|10.xxx.137.193:45528

2. 一些尝试：
   1）总请求数不变，并发调整到7k时，未出现服务异常报错。
   2）调整 WCacheObj、Route、Proxy 的最大连接数、队列长度和超时时间等，没有明显改善。

3. 系统配置
   8核 32G CentOS Linux release 7.2.1511 (Core)

希望能提供些解决思路，是否由某些配置参数制约影响造成的。

当存储大小达到1.08M及以上时，setKV时必定会crash

t_router_switch 表缺失，程序报错

简单看了下 程序，感觉少建了这个表。请确认。

DbHandle::insertSwitchInfo|[TC_Mysql::execute]: mysql_query: [ insert into t_router_switch (app_name,module_name,group_name,master_server,slave_server,mirror_idc,master_mirror,slave_mirror,switch_type,switch_result,access_status,comment,switch_property,switch_time,modify_time) values((select app_name from t_router_app where router_name='DCache.DCache3RouterServer'),'DCache3Test1','DCache3Test1KVGroup1','DCache.DCache3Test1KVCacheServer1-1','DCache.DCache3Test1KVCacheServer1-2','','','',0,3,0,'SwitchThread:: slaveBinlogdif diffBinlogTime(1556264300) > 300 DCache.DCache3Test1KVCacheServer1-2','auto',FROM_UNIXTIME(1556264568), now()) ] :Table 'db_dcache_relation.t_router_switch' doesn't exist
-- | -- | --

make release error

编译dcache，执行以下命令
mkdir build; cd build; cmake ..; make; make release
最后一步make release报错

Scanning dependencies of target release
release all
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-ConfigServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-DbAccessServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-KVCacheServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-MKVCacheServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-OptServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-PropertyServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-ProxyServer.cmake
CMake Error: Error processing file: /root/workspace/tars/DCache/build/run-release-RouterServer.cmake
Built target release