Comments (2)
no, cachelib doesn't support online backup. Could you explain why do you need persistence in the case of "kill -9"?
from cachelib.
Unlike storage engines, cachelib does not offer crash consistent storage of items. for caches, this is not a deal breaker since durability is not a prime concern for the cache. Besides, caches operate with background evictions, so the application already expects the cache to be empty or missing items. In steady state, cachelib has DRAM data structures that need to be persisted for recovery on restart. If a cache process is receiving a kill -9, we can not guarantee the state of these DRAM data structures to be consistent for shutdown. So I would not recommend catching the kill signal and doing a shutdown unless you can guarantee that the application threads have stopped accessing the cache and shutdown api can be safely called.
There is an internal experimental feature, but it is not the "kill -9" feature you are probably looking for. With that you can snapshot the cache by shutting it down (after ensuring application thread stop accessing cache) and copying the state to another machine to bootstrap another cache from it.
from cachelib.
Related Issues (20)
- The method config.enableChainedItems() cannot be found. HOT 1
- Some questions in resizing the cachelib pool size HOT 2
- Is there any plan to provide an Java SDK for this cachelib ? HOT 2
- Fail to build dependency fbthrift (with errors reported in fmt) HOT 5
- make clean option for contrib/build.sh HOT 1
- build error about fizz on ubuntu22.04 HOT 2
- CDN trace expected behavior HOT 2
- Enable FDP for CacheBench HOT 26
- qDepth Support for NVM Cache HOT 6
- Questions about trace files when running cachebench HOT 2
- Running simple-cache-example gives an error, flag 'v' was defined more than once HOT 6
- OSS build broken as of May, 2024 -> PRs are all blocked HOT 7
- No build support for Fedora37 OS HOT 4
- failed to build CacheLib following document HOT 2
- Build fails on debian-10 HOT 2
- Segmentation fault while fetching refcount HOT 2
- Minimum Limit For Cache Allocation? HOT 1
- build failed when building dependency 'fbthrift' HOT 3
- Build issue with CacheLib with missing source files HOT 3
- [Seeking Volunteers] Add new builds to CacheLib HOT 2
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from cachelib.