Koloboke - Java Collections till the last breadcrumb of memory and performance

We have collection of more than 1 Million open source products ranging from Enterprise product to small libraries in all platforms. We aggregate information from all open source repositories. Search and find the best for your needs. Check out projects section.

Koloboke - Java Collections till the last breadcrumb of memory and performance

A family of projects around collections in Java (so far). A carefully designed extension of the Java Collections Framework with primitive specializations and more. Java 6+. Apache 2.0 license.

https://koloboke.com/
https://github.com/leventov/Koloboke

Tags	java-collections koloboke annotation-processor primitive-specializations high-performance hashmap collections
Implementation	Java
License	Public
Platform	OS-Independent

Related Projects

Koloboke - Java Collections till the last breadcrumb of memory and performance

Java

Koloboke aims to replace the standard Java collections and streams with more efficient implementations. The current version of Koloboke focuses on replacing java.util.HashSet and java.util.HashMap. It provides a complete set of primitive type implementations for each collection. Its able to avoid the expensive boxing/unboxing of primitives and saves memory for boxed primitive objects. It is the fastest and the most memory efficient library implementing hash maps and sets.

collections java-collection collections-library hashmap set list map

Koloboke - Java Collections till the last breadcrumb of memory and performance

Java

This library is a carefully designed and efficient extension of the Java Collections Framework with primitive specializations and more. Java 6+. Apache 2.0 license.

HPPC - High Performance Primitive Collections for Java

Java

HPPC provides template-generated implementations of typical collections, such as lists, sets and maps, for all Java primitive types. The primary driving force behind HPPC is optimization for highest performance and memory efficiency.

collections java-collection collections-library hashmap set list map

Agrona - Library to build high-performance applications in Java and C++

Java

Agrona provides a library of data structures and utility methods that are a common need when building high-performance applications in Java and C++. It supports Buffers, Map, Sets, Cache, Queues and lot more.

collections java-collection collections-library utility data-structure

gs-collections - A supplement or replacement for the Java Collections Framework

Java

GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework. It provides replacements for ArrayList, HashSet, and HashMap optimized for performance and memory usage.

collections java-collection collections-library hashmap set list map

high-scale-lib

Java

A collection of Concurrent and Highly Scalable Utilities. These are intended as direct replacements for the java.util.* or java.util.concurrent.* collections but with better performance when many CPUs are using the collection concurrently.

java-collection library concurrent

Capsule - The Capsule Hash Trie Collections Library

Java

Capsule aims to become a full-fledged (immutable) collections library for Java 8+ that is solely built around persistent tries. The library is designed for standalone use and for being embedded in domain-specific languages. Capsule still has to undergo some incubation before it can ship as a well-rounded collection library. Nevertheless, the code is stable and performance is solid.

hashmap trie immutable immutable-collections persistent-data-structure hashset performance data-structure collections map list champ

Primitive Collections for Java

Java

Primitive Collections for Java is a collections framework for primitive Java types. The framework supports all primitive types and includes bridges to the standard Java Collections Framework.

Trove - High performance collections for Java

Java

Trove provides fast, lightweight implementations of the java.util Collections API. These implementations are designed to be pluggable replacements for their JDK equivalents. This gap in the JDK is often addressed by using the "wrapper" classes (java.lang.Integer, java.lang.Float, etc.) with Object-based collections. For most applications, however, collections which store primitives directly will require less space and yield significant performance gains.

java-collection library map utility

Redisson - Redis based In-Memory Data Grid for Java

Java

Redisson - distributed Java objects and services (Set, Multimap, SortedSet, Map, List, Queue, BlockingQueue, Deque, BlockingDeque, Semaphore, Lock, AtomicLong, Map Reduce, Publish / Subscribe, Bloom filter, Spring Cache, Executor service, Tomcat Session Manager, Scheduler service, JCache API) on top of Redis server. Rich Redis client.

cache distributed-caching distributed-locks redis-client redis-cluster collections java-collections hashmap set queue

SmoothieMap - A gulp of low latency Java HashMap

Java

SmoothieMap is a Map implementation for Java with the lowest memory usage and absence of rehash latency spikes. Under the hood, it is a version of extendible hashing with 48-slot mini segments. This project also includes a proof-of-concept implementation of SwissTable algorithm in Java.

java-collections hashmap collections openhft low-latency

Trove for Java

Java

High performance collections for Java Objects and primitive types. ** Project moved to BitBucket ** https://bitbucket.org/robeden/trove Please submit all issues, requests and code there. Discussion forums remain on SF for the moment.

Paguro - Immutable Collections and Functional Transformations for the JVM

Java

Immutable Clojure collections and a Transformation abstraction for Java 8+, immutably, type-safely, and with good performance. It provide support for RRB Tree, which is an immutable List (like Clojure's PersistentVector) that also supports random inserts, deletes, and can be split and joined back together in logarithmic time.

immutable-collections rbtree kotlin jvm transformations stream data-structure collections immutable map list java-collections

FastTuple - Generates heterogeneous collections of primitive values and ensures as best it can that they will be laid out adjacently in memory

Java

FastTuple is a library for generating heterogeneous tuples of primitive types from a runtime defined schema without boxing.

tuples java-collections

JDBM3 - Embedded Key Value Java Database

Java

JDBM provides TreeMap, HashMap and other collections backed up by disk storage. Now you can handle billions of items without ever running out of memory. JDBM is probably the fastest and the simpliest pure Java database. JDBM is tiny (160KB nodeps jar), but packed with features such as transactions, instance cache and space efficient serialization. It also has outstanding performance with 1 million inserts per second and 10 million fetches per second (disk based!!). It is tightly optimized and has minimal overhead. It scales well from Android phone to multi-terrabyte data sets.

Essentials - General purpose utilities and hash functions for Android and Java (aka java-common)

Java

Essentials are a collection of general-purpose classes we found useful in many occasions. This project is bare bones compared to a rich menu offered by Guava or Apache Commons. Essentials is not a framework, it's rather a small set of utilities to make Java standard approaches more convenient or more efficient.

collections java-collections hash-map murmur3 utility library

MapDB - Embedded Database Engine

Java

MapDB is an embedded database engine. It provides Maps and other collections backed by disk or memory storage. It offers excellent performance comparable to java collections, but is not limited by GC overhead. It is also a full database engine with storage backends, transactions, cache algorithms, expiration and many other options. MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap memory.

embedded-database database java-collections off-heap cache in-memory key-value-store

PCollections - A Persistent Java Collections Library

Java

A Persistent Java Collections Library. PCollections serves as a persistent and immutable analogue of the Java Collections Framework. This includes efficient, thread-safe, generic, immutable, and persistent stacks, maps, vectors, sets, and bags, compatible with their Java Collections counterparts.

jvm collections java-collections immutable immutable-collections data-structure

Eclipse Collections - Best Java Collection Framework

Java

Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API, additional types not found in the JDK like Bags, Multimaps, and set of utility classes that work with any JDK compatible Collections, Arrays, Maps, or Strings. The iteration protocol was inspired by the Smalltalk collection framework. It maximizes the power of Java 8 Lambda expressions and method references with rich APIs directly available on your collections.

collections java-collection collections-library utility data-structure