Remove only works with the last peer of the list

[ernestoalejo]

This code captures only the last iteration of the for loop. When the goroutines finally run the variable peer has already changed to the last value.

		// Asynchronously clear the key from all hot and main caches of peers
		for _, peer := range g.peers.GetAll() {
			// avoid deleting from owner a second time
			if peer == owner {
				continue
			}

			wg.Add(1)
			go func() {
				errs <- g.removeFromPeer(ctx, peer, key)
				wg.Done()
			}()
		}

You can see the same efect here: https://play.golang.org/p/I82KNfRkqSP
Go vet will also highlight the error:

./prog.go:16:19: loop variable peer captured by func literal

The solution here is easy though. The smallest working change is to pass the peer as an argument to the goroutine: https://play.golang.org/p/0mNV3nSkGUy