How can I share data (in ideal associative array String -> Integer) between all threads within thread group? I'm interested in synchronous data access or at least atomic operations.
Or can I connect no-sql data storage (i.e. redis) and JMeter? Any existing solutions?
You should clarify what you intend to do with it and be sure you really need it. If it's confirmed then you have different options:
use third party library http://code.google.com/p/jmeter-plugins/wiki/InterThreadCommunication
code you own mechanism in java using Singleton pattern + Java sampler, see Testing Java Classes with JMeter
use jsr223 (groovy) + java custom code for this as before
But again ensure you need it as it can slow down jmeter or worse maje your test give wrong results or too optimistic ones if you add contention on JMeter through your custom classes.
Regards
Philippe M.
t have enough time to write an normal answer for a nearly mounth. Im too hardly working. Sorry (