How do I add deadlines and cancellation in Go?

In Go, context is an essential part of managing deadlines and cancellation of goroutines. The `context` package in Go provides the ability to create derived contexts with deadlines, cancellation signals, and other request-scoped values. Here’s how you can implement deadlines and cancellation using the `Context` type.

To create a context with a deadline, you can use the `context.WithDeadline` or `context.WithTimeout` functions. The following example demonstrates how to use these functions effectively.


        package main

        import (
            "context"
            "fmt"
            "time"
        )

        func main() {
            // Set a timeout of 3 seconds
            ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
            defer cancel() // Ensures that the resources are cleaned up
            
            // Simulate a long-running process
            select {
            case <-time.After(2 * time.Second):
                fmt.Println("Process completed successfully.")
            case <-ctx.Done():
                fmt.Println("Error:", ctx.Err())
            }
        }

How do I add deadlines and cancellation in Go?

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How do I add deadlines and cancellation in Go?

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