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2014-01-22 13:33:06 -0600 commented answer Space-based Remoting across multiple sites/clusters

Diego -- yes we do have customers that have used this approach successfully....coupled with some cluster instrumentation/alerting features that you may utilize through the XAP Admin API which could facilitate automating the proxy facade fail over.

2014-01-16 07:25:26 -0600 answered a question Space-based Remoting across multiple sites/clusters

Hi, Diego.

In a setup with 3 DCs an a GS Cluster on each, is it possible/recommended to have the LUS of each cluster "aware" of the PUs in the other 2 clusters.

It's highly not recommended to have lookup services connect to each other across data centers (more so with having the same space name in each) as it will introduce split brain scenarios as well as mix up between space instances. Better to keep everything separate.

Is it possible for my Client to be aware of the LUS in the 3 clusters, so the remoting proxy can connect to any service PU in any cluster ?

There are two ways to go about this:

1) Proxy-level basic fail-over: By initializing your proxy with a lookup locator from each data center, for example:


If your proxy operaiton (e.g.; space.read()) operation fails due to DC failure, retrying the same operation will utilize the next lookup service in the jini URL list. Please note that while this is functionally possible, it is not a supported product feature yet.

2) Recommended approach, Application-level fail-over: By creating a proxy for each data center in your client, then wrapping those within a Facade proxy class. The "wrapper proxy" would switch to using a different proxy when an operation failure occurs.



2013-08-02 10:38:17 -0600 answered a question WAN Gateway and Mirror

Hi, Illya.

Yes, it's possible to use both WAN Gateway and Mirror service for the same space, as they are two different components. Can you post your mirror service configuration?