Get() using WithTimeout() ctx

[aathan]

What is the return value from DMap.Get() in the event a WithTimeout() ctx is used with the call? Does it return a non-nil error in that case? What is the recommended way to use that call, or olris in general, in a pseudo hard-realtime scenario where the calls like Get() should not hang forever?

[buraksezer]

Olric v0.5.x has context as a parameter, previous versions don't have any protection against being stuck. The latest version passes that context to the underlying Redis client. Here is the Get implementation of ClusterClient of v0.5.0.

func (dm *ClusterDMap) Get(ctx context.Context, key string) (*GetResponse, error) {
	cmd := protocol.NewGet(dm.name, key).SetRaw().Command(ctx)
	rc, err := dm.clusterClient.smartPick(dm.name, key)
	if err != nil {
		return nil, err
	}
	err = rc.Process(ctx, cmd)
	if err != nil {
		return nil, processProtocolError(err)
	}
	return dm.makeGetResponse(cmd)
}

Does it return a non-nil error in that case?

It should return context.DeadlineExceeded in the case of context timeout.