porsamber·samber· v1.0.0 · atualizado em 2026-04-10
80
Score
Idiomatic context.Context usage in Golang — creation, propagation, cancellation, timeouts, deadlines, context values, and cross-service tracing. Apply when working with context.Context in any Go code.
Identify the need for context: — Determine where context is needed for cancellation, timeouts, or request-scoped values.
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Create the context: — Use `context.Background()`, `context.TODO()`, `r.Context()`, `context.WithCancel()`, or `context.WithTimeout()` as appropriate.
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Propagate the context: — Pass the context as the first argument to all downstream functions.
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Use context-aware functions: — Use `*Context` variants of standard library functions (e.g., `QueryContext`, `ExecContext`).
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Handle cancellation: — Listen for cancellation signals using `<-ctx.Done()` and clean up resources.
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Defer cancellation: — If using `context.WithCancel()`, `context.WithTimeout()`, or `context.WithDeadline()`, defer the `cancel()` function immediately after creation.
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Consider context values: — If necessary, store request-scoped metadata in context values using unexported key types.
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