Concurrency

Context

Carries deadlines, cancellation signals, and request-scoped values.

Request cancellationTimeoutsRequest tracing

Understanding Context

Go's context package provides a way to carry deadlines, cancellation signals, and request-scoped values across API boundaries and goroutines. It's essential for graceful shutdown and timeout handling.

How It Works

Parent Context

WithCancel()

Worker 1

ctx.Done()?

Worker 2

ctx.Done()?

Worker 3

ctx.Done()?

Timeout: 5s

Context created with cancel/timeout

Create Context

Parent creates context with cancel or timeout.

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Basic Implementation

Context with cancellation signal:

main.go

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Real-World Example: Timeout Handling

HTTP-style request with timeout:

main.go

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