In times of node.js and asynchronous IO, our other beloved languages can sometimes feel like the wrong tool. But looking at it like this would be too narrow-minded - like sending a registration confirmation mail, you can do it in the “register” user request, while the user is waiting for the response. But what if the mail server isn’t reachable? You’ll have to wait for the timeout. This will make your common user pretty angry.There are tons of different job queues around. I’d like to talk about a few different queues like Gearman and beanstalkd - what’s the differences and what are the perfect match use-cases. I also have some hints on what’s a good implementation detail ready.