lesismal/nbio

Health v2 · maintenance only

Adoption not part of the score

2755 stars · 182 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

NBIO is a pure Go non-blocking, event-driven network I/O library supporting TLS, HTTP/1.x, and WebSocket, largely compatible with net/http. It is designed for massive-connection scenarios (1M+ connections) with high performance and low memory overhead.

Use cases

• build a websocket server handling a million concurrent connections
• write a high-performance tcp gateway or proxy in go
• replace net/http for lower memory usage under massive connections
• implement an event-driven network server in go
• build a long-lived connection push service
• reduce goroutine count and gc pressure in a go network server

When to choose

• you need to handle hundreds of thousands to millions of concurrent connections
• you are building infrastructure like gateways or proxies where memory and GC pressure matter
• you want net/http-compatible APIs with event-driven performance
• you need websocket support with better out-of-the-box read/write design than gorilla/websocket

When to avoid

• your application has only a regular number of connections - the standard library often outperforms nbio there
• you need maximum performance for gateway/proxy infrastructure where C/C++/Rust may be more suitable
• you want a general-purpose websocket library for ordinary connection counts - consider gws or quickws instead

Facets

library · maturity active

http-server websocket networking concurrency networking backend developer-tools go windows cross-platform event-driven non-blocking-io high-concurrency tls net-http-compatible million-connections real-time linux macos

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