Logging, metrics and graphs are often an afterthought. This usually becomes painfully clear when something goes wrong and you feel like you're running in the dark with a blindfold on. You need to know what's going on in your application! We're going to have a deeper look at tools like logstash, statsd and friends to see how they can help developers and the business as a whole. You'll fix problems quicker and will gain more insights in how your application is doing.