Re: [infinispan-dev] TotalOrder and jgroups
> +1 - I've started doing that and it's an ugly business.
>
> Here's another approach:
> - all jgroups configs shipped with ISPN come with the SEQUENCER added
> - by default all messages have NO_TOTAL_ORDER flag attached
> - RpcManager.invoke mthods would also support a totalOrder flag (similar to OBB flag
currently supported)
>
> With this approach:
> - we would support heterogeneous caches on the same cache manager: TO, 2PC *and*
non-tx caches
> - we would allow existing users to switch to total order replication without the need
to change the jgroups configuration
> - the performance penalty of having the SEQUENCER for caches that don't need it,
e.g. not tx caches, is minimal by the look of the code
>
> How does it sound?
Intuitively, not nice ! Can't we have different configurations for these
use cases ?
We can, but the users that want to use both TO transactional caches and non transactional
caches on the same transport - a pretty common scenario IMO - would have to add the
seqeuncer to the jgroups configuration by hand. As the seqeuncer doesn't harm
performance, why not have it there by default?