Are there any open source alternatives to oracle coherence?
(btw, how much does coherence cost anyways?)
Coherence CE (Community Edition) is a free and open source edition of Oracle Coherence, first and market-leading in-memory data grid. Since its initial release in 2001, it has been used by hundreds of customers across many industries to power some of the mission critical systems you use every day.
Oracle Coherence is the industry leading in-memory data grid solution that enables organizations to predictably scale mission-critical applications by providing fast access to frequently used data.
In-memory data grid enables application developers and managers fast access to key-value data. Coherence ensures for customers maximum scalability and performance in enterprise applications by providing clustered low-latency data storage, polyglot grid computing, and asynchronous event streaming.
Hazelcast is an open source, transactional, distributed caching solution for Java. It is released under Apache license.
Hazelcast is actually a little more than a distributed cache; it is distributed implementation of queue, topic, map, multimap, lock, executor service for Java.
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