whatisgithub

What is souin?

kevinpollet/souin — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2022-01-10

Audience · ops devopsComplexity · 3/5DormantSetup · moderate

In one sentence

An HTTP caching layer written in Go that sits in front of your web servers and stores responses so repeat requests come back instantly instead of hitting your backend every time.

Mindmap

mindmap
  root((souin))
    What it does
      Caches HTTP responses
      Serves cached copies fast
      Reduces backend load
    Tech stack
      Go
      Reverse proxy
      HTTP cache headers
    Use cases
      Speed up news sites
      Cache API endpoints
      Cache product listings
    Audience
      Website operators
      API teams
    Deploys with
      Docker
      Kubernetes
      Nginx or Traefik

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Cache article or page responses so thousands of readers get instant load times.

USE CASE 2

Cache product listing pages while excluding personalized recommendation data.

USE CASE 3

Cache specific SaaS API endpoints while keeping user-specific responses fresh.

USE CASE 4

Deploy alongside a CDN like Fastly or Cloudflare for multi-layer caching.

What is it built with?

GoNginxTraefikCaddyDockerKubernetes

How does it compare?

kevinpollet/souin0verflowme/alarm-clock0verflowme/seclists
Language—CSS—
Last pushed2022-01-102022-10-032020-05-03
MaintenanceDormantDormantDormant
Setup difficultymoderateeasyeasy
Complexity3/52/51/5
Audienceops devopsvibe coderops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Full distributed caching across multiple servers requires the separate 'full-featured' version with Redis support.

Copy-paste prompts

Prompt 1
Help me deploy Souin in front of my Nginx server to cache HTTP responses.
Prompt 2
Explain how to configure Souin so it caches product pages but skips personalized content.
Prompt 3
Walk me through setting cache duration rules for different URLs in Souin.
Prompt 4
How do I run Souin in a Docker or Kubernetes deployment alongside my existing backend?

Frequently asked questions

What is souin?

An HTTP caching layer written in Go that sits in front of your web servers and stores responses so repeat requests come back instantly instead of hitting your backend every time.

Is souin actively maintained?

Dormant — no commits in 2+ years (last push 2022-01-10).

How hard is souin to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is souin for?

Mainly ops devops.

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