in a HA singleton scenario

wwang2016 Sep 8, 2016 12:07 PM

I am setting up the whole application (based on wildfly10.0.0.Final) to run as HA singleton, and I have two wildfly10 instances.

The default value from standalone-full-ha.xml for cache-ref is distributable ( <session-bean><stateful cache-ref="distributable" >). I used the configuration file to run the application, and got error when accessing a stateful session bean.

By checking the default configuration for ejb in infinispan section, the cache-container for web is a distributed cache and that is shared with ejb. The default owners=2. Now, I think this out-of-box setting may not be applicable to my case since I will only have at most one wildfly instance running at any time, and the owners=2 means the distributed cache will be copied to 2 instances of the cluster.

In my case, does it make more sense to configure replicated-cache for both web and ejb?

Thanks,

Wayne

1. Re: What is the recommended value of cache-ref in <session-bean><stateful cache-ref > in a HA singleton scenario

pferraro Sep 30, 2016 4:08 PM (in response to wwang2016)

If you don't need to replicate the state of your @Stateful EJBs, you can change the default cache-ref to "simple". Alternatively, you can configure your EJBs to be @Stateful(passivation-capable=false), which tells the container not to serialize your EJBs.
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2. Re: What is the recommended value of cache-ref in <session-bean><stateful cache-ref > in a HA singleton scenario

wwang2016 Sep 30, 2016 4:23 PM (in response to pferraro)

Hi Paul,

I am currently set it to "simple", and it worked in our specific case.

Thanks,

Wayne
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