GitHub - godcrampy/fireflydb: FireflyDB is a fast, thread-safe, JVM-based key-value storage engine with microsecond latency.
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FireflyDB is a fast, thread-safe, JVM-based key-value storage engine with microsecond latency. - GitHub - godcrampy/fireflydb: FireflyDB is a fast, thread-safe, JVM-based key-value storage engine w...

Saw this earlier. Haven’t tried it yet, but if the performance holds up this would be an interesting K/V store to try out.