Improve performance of the process method

[kurtymckurt]

No description provided.

[kurtymckurt]

Added updating the mongo cache store to the 8.1 api.

[kurtymckurt]

Wrote a jmh benchmark test.
https://github.com/kurtymckurt/infinispan-cachestore-mongodb-benchmark/blob/master/test/src/main/java/org/sample/MyBenchmark.java

Below are the results comparing the new version vs the previous.

8.1.2.Final

Result "testMethod":
27.943 ±(99.9%) 0.272 ops/s [Average](min, avg, max) = (25.899, 27.943, 28.712), stdev = 0.549
CI (99.9%): [27.671, 28.215](assumes normal distribution)

Run complete. Total time: 00:02:23

Benchmark Mode Cnt Score Error Units
MyBenchmark.testMethod thrpt 50 27.943 ± 0.272 ops/s

6.0.2.Final

Result "testMethod":
3.526 ±(99.9%) 0.126 ops/s [Average](min, avg, max) = (2.983, 3.526, 3.809), stdev = 0.255
CI (99.9%): [3.400, 3.652](assumes normal distribution)

Run complete. Total time: 00:02:36

Benchmark Mode Cnt Score Error Units
MyBenchmark.testMethod thrpt 50 3.526 ± 0.126 ops/s

[gustavocoding]

Hi @kurtymckurt, nice improvement!
There is just a config related test failure in https://travis-ci.org/infinispan/infinispan-cachestore-mongodb/builds/112806527, could you take a look?

[kurtymckurt]

@gustavonalle I believe I fixed that test. Sorry about that.

[gustavocoding]

@kurtymckurt fixed, but unfortunately the latest commits introduced other failures

[kurtymckurt]

Yeah, I added a stop method to clean up the MongoClient connections for the jmh test and that causes problems with the other tests. I added a proper startup for it now.

[gustavocoding]

Integrated, thanks @kurtymckurt !