MapDB: The Agile Java Data Engine
MapDB is a pure Java database, specifically designed for the Java developer. The fundamental concept for MapDB is very clever yet natural to use: provide a reliable, full-featured and “tune-able” database engine using the Java Collections API. MapDB 1.0 has just been released, this is the culmination of years of research and development to get the project to this point. Jan Kotek, the primary deve
3 billion items in Java Map with 16 GB RAM
3 billion items in Java Map with 16 GB RAM One rainy evening I meditated about memory managment in Java and how effectively Java collections utilise memory. I made simple experiment, how much entries can I insert into Java Map with 16 GB of RAM? Goal of this experiment is to investigate internal overhead of collections. So I decided to use small keys and small values. All tests were made on Linux
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GitHub - jankotek/mapdb: MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.
