Context in Go

 Context in Go

Go provides a context package that can be used to manage the context of a request or a function call. The context package provides a way to propagate deadlines, cancelation signals, and other request-scoped values across API boundaries and between processes.

Here's an example of using the context package to set a deadline for a function call:

func search(ctx context.Context, query string) ([]string, error) {

    deadline, ok := ctx.Deadline()

    if !ok {

        return nil, errors.New("no deadline set")

    }

    if time.Until(deadline) < 0 {

        return nil, errors.New("deadline exceeded")

    }

    // perform search

}