Now that Go has been added, I see a good amount of votes for Go. Since we're talking about server-side web apps, I'm assuming this entails an HTTPS API endpoin

Now that Go has been added, I see a good amount of votes for Go. Since we're talking about server-side web apps, I'm assuming this entails an HTTPS API endpoint, some datasource, and some business logic. What packages/libraries/toolkits to you use to build a (micro-)service such as this?