The async-web-deferredresults from feisuo

async-web-deferredresults's Introduction

To run single thread handler:

      ab -k -n 1000 -c 1000 http://localhost:8082/echo/once/?text=1

To run callable with threadpool workers (note the c added to 'once'):

      ab -k -n 1000 -c 1000 http://localhost:8082/echo/oncec/?text=1

To run deferred result with a custom threadpool executor (note the d added to 'once'):
```
      ab -k -n 1000 -c 1000 http://localhost:8082/echo/onced/?text=1
```
To run deferred result with disruptor workerpool (note the r added to 'once'):
```
      ab -k -n 1000 -c 1000 http://localhost:8082/echo/oncer/?text=1
```
To start the server, right click the TomcatDriver class, and hit run in intellij
You need java8 to run this project
You need maven 3
You need 2GB of memory for the process
The deferredresult implementation doubles the number of threads used by the executor, therefore it does not cope well. I have tested it with its own executor with a lot less threads to handle calls.
run a curl on the server before you run ab to allow the spring context to load and the jvm to warm up
sometimes the ab command will fail, this is due to the fact that os or jvm are not able to cope with the speed of creating connections. Repeat the command, it should work after few attempts.
Note: tomcat has two connectors defined, one of them is the default, the other is NIO enabled, many connections-accepting 8082 ported connector. Use that in your tests to not be limited by the number of connections tomcat is accepting.
These are the results I had on a mac with 8 cores:

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