# sozu-proxy/sozu

Sōzu HTTP reverse proxy, configurable at runtime, fast and safe, built in Rust. It is awesome!

Repository: https://github.com/sozu-proxy/sozu
Canonical: https://ross.abutalabs.com/products/sozu
Homepage: https://www.sozu.io/
Language: Rust
License: AGPL-3.0
License Family: copyleft
Topics: proxy, http-proxy, http, rust, security, performance
Last push: 2026-08-23T14:43:39+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 93, longevity 100
- inputs: {"age_days": 3514, "days_push": 10, "days_rel": 48, "gap_med": 8, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3722, forks 213 (observed 2026-08-28T04:08:15.551702+00:00)

## What it is
Sōzu is a fast, always-up HTTP and TCP reverse proxy written in Rust that can be reconfigured at runtime without reloads and upgrades itself while still processing requests. It uses a share-nothing worker architecture with epoll event loops, terminates TLS via pluggable crypto backends, and exposes a control-plane socket plus an optional live TUI dashboard.

## Use cases
- terminate TLS in front of backend servers
- reconfigure proxy routing without downtime or reloads
- upgrade the proxy binary while connections stay alive
- shield and load-balance backends in a PaaS or cloud platform
- run a memory-safe reverse proxy for high-traffic infrastructure
- monitor proxy traffic live from the terminal with sozu top

## When to choose
- you need zero-downtime configuration changes and binary upgrades
- you run a dynamic platform with frequent deployments and want an always-up proxy
- you want a Rust-based, memory-safe alternative to HAProxy or nginx for HTTP/TCP proxying
- you need a control-plane-driven proxy with atomic config diffs over a unix socket

## When to avoid
- you need a full-featured web server with scripting, caching, or static file serving
- you require non-Linux production platforms (prebuilt binaries target Linux only)
- you need a proxy with a large plugin ecosystem or extensive community modules
- AGPL-3.0 licensing is incompatible with your product plans

## Facets
- artifact type: service
- maturity: active
- function: proxy, http-server, security, monitoring, configuration-management
- domain: networking, web-development, infrastructure-as-code, self-hosted, security, performance
- platform: rust, cli, self-hosted
- tags: reverse-proxy, tls-termination, hot-reconfiguration, zero-downtime, load-balancing, rustls, tui-dashboard, linux

## Member repositories
- sozu-proxy/sozu (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:15.551702+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:29:19.104983+00:00, confidence not recorded.
  - readme: https://github.com/sozu-proxy/sozu (fetched 2026-08-28T04:08:15.551702+00:00, sha df088b8ff2ae)
  - homepage: https://www.sozu.io/ (fetched 2026-08-29T09:24:01.259471+00:00, sha 204236c7198d)
  - site_page: https://www.sozu.io/about (fetched 2026-08-29T09:24:01.278840+00:00, sha df6dc56d8013)
  - registry_crates: https://crates.io/api/v1/crates/sozu (fetched 2026-08-29T09:24:01.281162+00:00, sha 86a5890ae608)
- Data as of 2026-08-30T08:39:29.467469+00:00.