sourcegraph/conc

Health v2 · maintenance only

Adoption not part of the score

10427 stars · 357 forks observed · 2026-08-28

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

conc is a Go library providing better structured concurrency primitives, including a panic-safe WaitGroup and concurrency-limited task pools. It reduces boilerplate and makes concurrent Go code safer by propagating panics and preventing goroutine leaks.

Use cases

• run goroutines with panic propagation instead of crashing the process
• limit concurrency of parallel tasks with a worker pool
• collect results from concurrent tasks in Go
• replace sync.WaitGroup with a safer version
• handle errors from concurrent goroutines cleanly
• avoid goroutine leaks and deadlocks from panics

When to choose

• you write concurrent Go code and want panic-safe goroutine management
• you need bounded-concurrency task execution or result collection
• you want less boilerplate than the standard library for common concurrency patterns

When to avoid

• your project is not written in Go
• you need async/await-style structured concurrency in another language
• your concurrency needs are trivial and sync.WaitGroup suffices

Facets

library · maturity stable

concurrency developer-tools go goroutines structured-concurrency waitgroup worker-pool panic-handling algorithms

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