tidwall/evio

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

6040 stars · 492 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

evio is a fast, small event-loop networking framework for Go that makes direct epoll and kqueue syscalls instead of using the standard net package, similar to libuv and libevent. It provides a simple event-driven API for building high-performance TCP, UDP, and Unix socket servers.

Use cases

• build a high-performance TCP server in Go
• write a Redis-like packet-handling server
• create a low-latency UDP server
• implement a custom L7 proxy
• handle thousands of concurrent connections with low memory
• build an echo or protocol server with an event loop

When to choose

• you need performance on par with Redis or HAProxy for packet handling
• you want direct epoll/kqueue event-loop networking instead of Go's net goroutine-per-connection model
• you're building a custom protocol server, proxy, or network foundation
• low memory usage per connection is critical

When to avoid

• you need a drop-in replacement for net or net/http
• you're building a standard HTTP/REST API where net/http is sufficient
• your team is unfamiliar with event-loop programming and callback-style APIs
• you rely on features of the standard library like HTTP middleware ecosystems

Facets

library · maturity stable

http-server networking concurrency networking backend performance developer-tools go cross-platform event-loop epoll kqueue tcp udp unix-sockets high-performance non-blocking-io linux macos

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