Go: Building Web Applications

Timing out with channels

One somewhat critical point with channels and select loops that we haven't examined particularly closely is the ability—and often necessity—to kill a select loop after a certain timeout.

Many of the applications we've written so far are long-running or perpetually-running, but there are times when we'll want to put a finite time limit on how long goroutines can operate.

The for { select { } } switch we've used so far will either live perpetually (with a default case) or wait to be broken from one or more of the cases.

There are two ways to manage interval-based tasks—both as part of the time package, unsurprisingly.

The time.Ticker struct allows for any given operation after the specified period of time. It provides C, a blocking ...