Netty project - an event-driven asynchronous network application framework

A high performance caching library for Java

Zipkin is a distributed tracing system

AWS Service registry for resilient mid-tier load balancing and failover.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Alluxio, data orchestration for analytics and machine learning in the cloud

Apache NiFi

Fault tolerance and resilience patterns for the JVM

Simple Binary Encoding (SBE) - High Performance Message Codec

Benchmark comparing serialization libraries on the JVM

High Performance data structures and utility methods for Java

A High Dynamic Range (HDR) Histogram

A high performance replicated log service. (The development is moved to Apache Incubator)

The Jdbi library provides convenient, idiomatic access to relational databases in Java and other JVM technologies such as Kotlin, Clojure or Scala.

Obsolete repository. Moved to oracle/graal.

Mirror of Apache Giraph

This is an implementation of RFC 6902 JSON Patch written in Java

Utilities for latency measurement and reporting

Java library for the HyperLogLog algorithm

A Discrete Fourier Transform (DFT), a Fast Wavelet Transform (FWT), and a Wavelet Packet Transform (WPT) algorithm in 1-D, 2-D, and 3-D using normalized orthogonal (orthonormal) Haar, Coiflet, Daub…

A reasonably complete implementation of the Universal Scalability Law model.

metrics-datadog

High performance persistent LSM key-value store library for the JVM.

Scala-like pattern matching for Java 8

Amazon ElastiCache Cluster Client for Java - enhanced library to connect to ElastiCache clusters.

Addon bundle for Dropwizard to support jOOQ for database access

JEP with off heap support to replace portions of Unsafe and other sun.* methods.

JDBI Integration Testing