Repository Index

High Performance data structures and utility methods for Java

• java
• performance

A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)

• database
• graph-database
• graph
• gremlin

JavaMelody : monitoring of JavaEE applications

• performance
• monitoring
• metrics
• apm

Replicate your Key Value Store across your network, with consistency, persistance and performance.

Simple, high-performance event-driven HTTP client+server for Clojure

• clojure
• async
• websockets
• http-server

JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.

• jeromq
• libzmq
• messaging
• networking

JVM Profiler Sending Metrics to Kafka, Console Output or Custom Reporter

• java
• agent
• profiler
• performance

Automated testing to find logic and performance bugs in database systems

• testing
• sql
• dbms
• fuzzing

🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.

• kafka
• rest
• server-sent-events
• streaming-api

High performance Java reflection

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.

A high available,high performance distributed messaging system.

Simple API, Complex Emails (Jakarta Mail smtp wrapper)

• java
• java-mail
• outlook
• batch-processing

Custom view for circular images in Android while maintaining the best draw performance

HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support

• mqtt
• mqtt-client
• mqtt-protocol
• reactive-streams

High performance JVM JSON library

• json
• java
• high-performance
• android

High Performance Primitive Collections for Java

Java Collections till the last breadcrumb of memory and performance

• java-collections
• java
• koloboke
• annotation-processor

Generate and read big Excel files quickly

• excel
• java
• performance

High performance reactive SQL client written in Java

• vertx
• postgres
• pg
• async

Zero-allocation hashing for Java

• java
• hashing
• high-performance
• farmhash

binary serialization format

• serialization
• serializable-objects
• cross-platform
• high-performance

Universal, flexible, high-performance distributed ID generator. | 通用、灵活、高性能的分布式 ID 生成器

• distributed
• id
• idgenerator
• snowflake

Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. It features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing

• microservices
• reactive-streams
• distributed-systems
• service-mesh