Hi,
I would like to ask if someone has already investigated or implemented an
adapter for OFBiz to use a central caching system like memcached, redis or the
like.
I know for OFBiz cluster setup there is the distributed cache clear mechanism.
I did use that in the past but have found that with more than 2 instances it
impacts performance of OFBiz adversely.
Symptoms we started to see in production:
- We started to see long running transaction locks, General Entity operations
slower (might be a combination of load and clustering)
- Other idle hosts were 5%-15% busy only to process the cache-clear events
without doing anything else
- Especially with higher load, the whole thing becomes even slower
More load -> More cluster instances -> more cache clear events -> more cycles
used to process cache mgmt. -> general requests/operations slower -> so we need
even more instances -> you see where it’s going
That’s why I was thinking if someone has tried to integrate with a central
cache.
For single host installation the local in-memory cache is surely faster, even
perhaps with a 2host cluster setup,
but with 3 or more hosts, I think a central cache might scale better.
Also interested to hear about any thoughts on the idea and architecture.
Otherwise, any pointers where in the code to look at would be appreciated.
I'm thinking to implement it as an adaptor/driver you can switch on if you want
it.
Thanks
Best
Leo
