Hash, displace, and compress: Perfect hashing with Java

• Zero-Allocation-Hashing

  1 765 1.8 Java

  Zero-allocation hashing for Java

  

...sounds like quite a niche use-case, but I agree that I cannot think of any other stream-hashing library. I hoped https://github.com/OpenHFT/zero-allocation-hashing would do, but it doesn't. However, https://github.com/OpenHFT/Chronicle-Bytes has xxHash if that's your thing.

• Chronicle-Bytes

  1 386 9.0 Java

  Chronicle Bytes has a similar purpose to Java NIO's ByteBuffer with many extensions

  

...sounds like quite a niche use-case, but I agree that I cannot think of any other stream-hashing library. I hoped https://github.com/OpenHFT/zero-allocation-hashing would do, but it doesn't. However, https://github.com/OpenHFT/Chronicle-Bytes has xxHash if that's your thing.

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• minperf

  2 156 10.0 Java

  A Minimal Perfect Hash Function Library

I understand this is mostly educational. However, there is a Java library for perfect hashing, https://github.com/thomasmueller/minperf. I used it once, it wasn't the fastest thing in the worlds, but it did the job.

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