cluster

Multicast might seem like a great idea for 2 problems: iptv and discovery. In my case it seemed like a very good idea for cluster node auto-discovery: no need to configure each node with all the other nodes, no need to know the number of nodes beforehand, use a single node configuration. However it seems that more and more nodes are discovered you can fall into some very dark pitfalls which could eat days and nights of your time until either you find a solution, either you revert to tcp or udp unicast....

At first replicating EhCache seems a very easy task, just need to configure ehcache.xml with RMI and you are ready. Is it so? RMI At the beginning it seems so, the cache seems to be replicated, everything works. However at some point you notice in the log something like: Exception on replication of putNotification. Error unmarshaling return header; nested exception is: java.net.SocketTimeoutException: Read timed out. Continuing... java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is: java....