#concurrency

📢 Production-ready python event bus library with support for async and sync handlers, forwarding betwen busses w/ parent event tracking + loop prevention, FIFO and concurrency options, and WAL persistence. Powers the browser-use library.

Async synchronization primitives

A lockless mpmc/mpsc to support async/sync (derive from crossbeam)

Concurrently detect the minimum Python versions needed to run code

Fast job queuing and RPC in python with asyncio and redis.

Revolt is a rock-solid event loop for concurrent PHP applications.

MPI bindings for Rust

Future-based Tungstenite for Tokio. Lightweight stream-based WebSocket implementation

High-performance wait-free memory reclamation for wait-free data structures (ASMR). Bounded memory usage, predictable latency.

Structured concurrency operations for async Rust

A mutex/semaphore implementation made easy to use.

A rough port of Node.js's EventEmitter to Python with a few tricks of its own

Python library for controlling ordering of concurrent events to find and reproduce race conditions

Clone-and-own Go service framework for concurrent services: run them together locally, then deploy as one binary or split them into microservices, with retries, dependencies, graceful shutdown, and scoped logs.

Run multiple promise-returning & async functions with limited concurrency

A simple, fast, and easy-to-use library for optimally creating and handling data and slices.

Crash-safe, race-free file writes for Go — TOCTOU protection via fingerprint verification, cross-platform file locking, atomic rename, and fsync for crash durability.

An efficient, convenient and lightweight grow-only concurrent data structure allowing high performance concurrent collection.

Distributed locking for .NET. Backend-agnostic IDistributedLock with Redis and EF Core backends, reentrancy, and lease auto-renewal.