Xuanwo/backon

Health v2 · maintenance only

Adoption not part of the score

1051 stars · 58 forks observed · 2026-08-28

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

BackON is a Rust library that makes retrying fallible functions feel like a built-in language feature, supporting both sync and async code with a fluent API. It provides built-in backoff strategies (exponential, constant, fibonacci), custom strategies, retry conditions, notifications, and works on wasm and no-std targets.

Use cases

• retry flaky HTTP requests with exponential backoff in Rust
• add retry logic to async functions with tokio
• retry blocking database calls with backoff
• customize which errors should trigger a retry
• implement dynamic backoff using HTTP Retry-After headers
• retry operations in wasm or no-std environments

When to choose

• you need retry with backoff for sync or async Rust code
• you want fine-grained control over retry conditions and notifications
• you need cross-platform support including wasm and no-std
• you want a simple, ergonomic retry API with minimal dependencies

When to avoid

• you need distributed rate limiting or circuit-breaker patterns beyond simple retry
• you are not working in Rust
• you need retry policies managed at the infrastructure level (e.g., service mesh or API gateway)

Facets

library · maturity stable

error-handling concurrency developer-tools developer-tools backend rust cross-platform wasm retry backoff async no-std exponential-backoff algorithms

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