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Go Academy · Lesson

Timeouts and Tickers

Using time.After, time.Tick with select

Why timeouts matter

Without timeouts, a goroutine waiting on a slow channel can block forever. The time package provides primitives to add time-based control to channel operations.

time.After for one-shot timeout

time.After(d) returns a channel that receives a value after duration d. Use it in a select case to abort a wait.

select {
case res := <-ch:
    fmt.Println(res)
case <-time.After(2 * time.Second):
    fmt.Println("timed out")
}

All lessons in this course

  1. The select Statement
  2. Timeouts and Tickers
  3. Fan-in and Fan-out Patterns
  4. Worker Pool Pattern
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