Space4J is a simple database system that will let you work with Java Collections in memory. Since memory is several orders of magnitude faster than disk for random access to data, Space4J provides ...

Latest version of open source Java In-Memory Data Grid Hazelcast supports entry processing, multi-thread execution, continuous queries and lazy indexing. They have also re-implemented all of the ...

Want a heap dump? Check out the jmap (Java memory map) and jhat (Java heap analysis tool) shipped with Hotspot-based JVMs (Sun, OpenJDK). Looking for a bit more?

Hazelcast is designed to prevent enterprise applications from drowning in data. The open source technology provider closed a $2.5 million series A round today.