GitHub - goldmansachs/gs-collections: GS Collections has been migrated to the Eclipse Foundation, re-branded as Eclipse Collections. https://www.eclipse.org/collections/

GitHub - google/agera: Reactive Programming for Android

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GitHub - real-logic/agrona: High Performance data structures and utility methods for Java

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Apache Arrow

A cross language development platform for in memory analytics

GitHub - lemire/bloofi: Bloofi: A java implementation of multidimensional Bloom filters

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Cap’n Proto: Introduction

GitHub - ben-manes/caffeine: A high performance caching library for Java

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GitHub - OpenHFT/Chronicle-Bytes: Chronicle Bytes has a similar purpose to Java NIO’s ByteBuffer with many extensions

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GitHub - OpenHFT/Chronicle-Queue: Micro second messaging that stores everything to disk

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GitHub - OpenHFT/Chronicle-Map: Replicate your Key Value Store across your network, with consistency, persistance and performance.

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GitHub - krukow/clj-ds: Clojure’s data structures modified for use outside of Clojure

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GitHub - pascaldekloe/colfer: binary serialization format

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Math – Commons Math: The Apache Commons Mathematics Library

GitHub - MGunlogson/CuckooFilter4J: High performance Java implementation of a Cuckoo filter - Apache Licensed

High performance java implementation of a cuckoo filter apache licensed git hub m gunlogson cuckoo filter4 j high performance java implementation of a cuckoo filter apache licensed

GitHub - aol/cyclops: An advanced, but easy to use, platform for writing functional applications in Java 8.

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GitHub - eclipse/eclipse-collections: Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.

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GitHub - lemire/externalsortinginjava: External-Memory Sorting in Java

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GitHub - failsafe-lib/failsafe: Fault tolerance and resilience patterns for the JVM

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GitHub - boundary/fasttuple

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GitHub - jchambers/fast-uuid: A Java library for quickly and efficiently parsing and writing UUIDs

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FlatBuffers: FlatBuffers

GitHub - davidmoten/geo: Geohash utitlies in java

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GitHub - Netflix/hollow: Hollow is a java library and toolset for disseminating in-memory datasets from a single producer to many consumers for high performance read-only access.

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GitHub - boundary/high-scale-lib: A fork of Cliff Click’s High Scale Library. Improved with bug fixes and a real build system.

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GitHub - carrotsearch/hppc: High Performance Primitive Collections for Java

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GitHub - belliottsmith/injector

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GitHub - romix/java-concurrent-hash-trie-map: Java port of a concurrent trie hash map implementation from the Scala collections library

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GitHub - aggregateknowledge/java-hll: Java library for the HyperLogLog algorithm

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GitHub - lemire/JavaFastPFOR: A simple integer compression library in Java

A simple integer compression library in java contribute to lemire java fast pfor development by creating an account on git hub

GitHub - tdebatty/java-string-similarity: Implementation of various string similarity and distance algorithms: Levenshtein, Jaro-winkler, n-Gram, Q-Gram, Jaccard index, Longest Common Subsequence edit distance, cosine similarity ...

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JCTools

Java concurrency tools

GitHub - ngs-doo/dsl-json: High performance JVM JSON library

High performance jvm json library contribute to ngs doo dsl json development by creating an account on git hub

Fastest JSON parser ever

GitHub - jOOQ/jOOL: jOOλ - The Missing Parts in Java 8 jOOλ improves the JDK libraries in areas where the Expert Group’s focus was elsewhere. It adds tuple support, function support, and a lot of additional functionality around sequential Streams. The JDK 8’s main efforts (default methods, lambdas, and the Stream API) were focused around maintaining backwards compatibility and implementing a functional API for parallelism.

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GitHub - leventov/Koloboke: Java Collections till the last breadcrumb of memory and performance

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GitHub - dain/leveldb: Port of LevelDB to Java

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GitHub - bryanduxbury/lightweight_trie: A very memory-efficient trie (radix tree) implementation

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