Propagate Go context cancellation, deadlines, and values across call chains.
npx skills add https://github.com/deandum/claude-resources --skill go-context-deandum
Please help me install this Agent Skill. Skill: go/context Source: https://github.com/deandum/claude-resources/tree/main/skills/go/context Command: npx skills add https://github.com/deandum/claude-resources --skill go-context-deandum
Go context propagation, cancellation, timeouts, and value storage to coordinate request lifecycles and goroutine coordination in Go programs.
Invoke the Go context utilities to propagate cancellation and timeouts across goroutines in a request lifecycle.
High-intent search queries and answers about installing and using this skill.
Go context propagates cancellation and timeouts across goroutines by passing context.Context as the first parameter. You use WithTimeout, WithCancel, or WithDeadline to signal goroutines to stop processing when a request lifecycle ends.
Storing context.Context in structs is an anti-pattern because context instances are designed for request-scoped lifecycles. Explicitly passing context as the first function parameter ensures cancellation signals and deadlines propagate correctly down the call chain.
Pass request-scoped values using WithValue alongside custom key types. Avoiding bare strings as keys prevents naming collisions, ensuring type-safe context value retrieval when propagating data across HTTP handlers and workers.
Manage HTTP handler deadlines by creating a derived context using WithDeadline or WithTimeout. This enforces a strict maximum duration for the request lifecycle, ensuring safe cancellation behavior if the threshold is exceeded.
Use WithoutCancel when background workers must continue executing independently of a parent request's cancellation signal. It derives a new context that preserves deadlines and values while ignoring upstream cancellation propagation.
Yes, Go context works with microservices to coordinate request lifecycle control. Propagating context across service boundaries enforces distributed timeouts, manages deadlines, and carries request-scoped values throughout the network call chain.
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