ShardedFlight is a parallel wrapper around golang.org/x/sync/singleflight that shards calls across groups to boost throughput under heavy load 🐙. Zero-alloc keying with a pluggable hash keeps latency low.

Go lock-free concurrent algorithms library

🚦 Implement flexible rate limiting in Go with go-limiter. Use built-in algorithms and pluggable stores for seamless integration with popular frameworks.

Concurrent Core for Go — a lightweight, high-performance toolkit designed for critical paths where latency and allocation matter.

This project lays the foundation for a Go-based WebSocket server library that delivers ultra-high throughput, NUMA-aware memory management, and true zero-copy data paths—built to DPDK-grade performance standards and production-ready for open-source release.

A high-performance rate limiter library for Go applications

A lock-free, ultra-fast event bus for Go

Balios is a high-performance in-memory cache for Go based on W-TinyLFU, designed for maximum throughput, optimal hit ratio, advanced security & observability.

FlashFlags is an ultra-fast, zero-dependency, lock-free command-line flag parsing library for Go. Originally built for Argus, it provides great performance while maintaining simplicity and ease of use.

A high-performance, lock-free broadcaster implementation for Go that allows one goroutine to efficiently broadcast messages to multiple subscribers.

Lock-free MPMC Ring Buffer (Generic) for SMP, in golang. Some posts in chinese:

Ready-to-use highly parallel wrapper for golang.org/x/sync/singleflight that shards calls between multiple internal singleflight.Group to eliminate global locks and increase throughput under high load. The only difference - keys after function.

lock-free, 64-bit ID generator

Lethe is a lock-free log rotation library for Go, designed for maximum performance, seamless file management, and production-grade reliability — featuring intelligent auto-scaling between synchronous and asynchronous modes.

A Golang lock-free thread-safe HashMap optimized for fastest read access.

Blazing fast time function library for Go with zero memory allocation. fastime returns the approximate time.

High-performance lock-free SPMC ring buffer with two-phase dequeue and disruptor protocol

concurrent tooling library for the go programming language

A lock-free single producer, single consumer ringbuffer implementation in Go

Repository for course by Concurrency in Go