dienaya

Shoal makes the complex clustering subject an easy one. It allows an application instance to join a cluster, send messages and recovers from errors. It is used by GlassFish for its clustering needs.

Events are everywhere, in massive amounts , containing information you never imagined and in real time. But can you handle them all?
You are not alone, Esper allows you to process streams of events. A continous flow of events you can query and detect patterns.
The patterns are the real power of Esper, you can make use of sequencial and time patterns.

For example: If after the ocurrence of a Stock with more than 5 dollars, arrives a new Stock with less than 4 dollars, notify me!

Esper only notifies you, and leaves the rest to you.

Nothing matches it in terms of scalability.