stuartsierra/component

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2161 stars · 95 forks observed · 2026-08-28

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

A small Clojure library for managing the lifecycle and dependencies of stateful components such as database connections, web servers, and caches. It implements a dependency-injection design pattern using immutable data structures, with start/stop lifecycle management.

Use cases

• manage database connection lifecycle in a Clojure app
• dependency injection for stateful services in Clojure
• start and stop application components in a defined order
• structure a large Clojure application with clear boundaries
• share runtime state like HTTP connection pools across functions
• handle in-memory caches with explicit lifecycle

When to choose

• building a Clojure application with multiple stateful resources that need ordered startup and shutdown
• you want explicit, declarative dependency graphs between services
• you prefer a lightweight design pattern over a heavyweight DI framework

When to avoid

• writing mostly pure functional code with no shared runtime state
• using a language other than Clojure or ClojureScript
• you need a full-featured dependency injection container with auto-wiring

Facets

library · maturity stable

middleware developer-tools backend developer-tools programming-languages jvm jvm-scripting clojure dependency-injection lifecycle-management stateful-components system-architecture

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