[jboss-user] [JBossCache] - Re: New Bie JBoss Cache Replication

[genman]

Here's the thing. Machine 1 might store 10, but then if you call Machine 2, it might store 0. What you need to do is more like:

  | Integer count = (Integer)cache.get("/a/b/c", "Key1");
  | if (count == null) // initialize
  |    count = 0;
  | count = count + 1;
  | cache.put("/a/b/c", "Key1", count);
  | 
But there's a potential race condition here. Use pessimistic locking and transactions to ensure this is atomic.




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