JarCastingBigMap (and Set) by Fizzed
Lightweight Map and Set implementation(s) with minimal 3rd party dependencies that alleviates memory pressure by offloading to disk.
While there are other alternatives out there, they were almost too complicated. This is a simple way to drop-in as a replacement where you use JVM Maps or Sets and don't want to fuss with settings too much.
An initial implementation based on LevelDB (Java only port) is supplied.
LevelBigMap Usage
LevelBigMap<Long,String> map = new LevelBigMapBuilder()
.setScratchDirectory(Paths.get("target"))
.setKeyType(Long.class)
.setValueType(String.class)
.build();
LevelBigSet Usage
LevelBigSet<Long> set = new LevelBigSetBuilder()
.setScratchDirectory(Paths.get("target"))
.setKeyType(Long.class)
.build();
Then standard Map (sorted) and Set (sorted) methods all mostly work. Some methods make no sense when you are using this instead (e.g. finding a value vs. lookups by key)
Apache 2 License!
