Memory growth issue 2.0.9

[DpaziNN]

config.setWebsocketCompression(false);
config.setWorkerThreads(1);

above solutions from #415 and #794 (comment)

Never the less, memory never releases after clients disconnected, and keep growing over the time - i.e. about 700mb by 10 days (about 1000 connections per day). Could this be due to the use of MemoryStoreFactory? Doesn't it clean itself?

Originally posted by @DpaziNN in #966 (comment)