Operate for design: Metrics and monitoring

(digital music)…- Now we're going to shift gears a little…and discuss how to create feedback loops…from the actual production run time…back to development.…We'll be covering monitoring and instrumentation basics,…and how to take a whole Lean approach to this topic.…Before diving in, let's start with a little bit of theory.…Medical doctor Richard Cook wrote an excellent paper…called "How Complex Systems Fail."…Now he was primarily concerned with medical process failures…when he wrote it, but, you know, when you read it,…you'll swear he was talking about the IT systems…that you and I use.…

Here are a few of my favorite quotes from the paper.…Changes introduce new forms of failure.…Complex systems contain changing mixtures…of failures latent within them.…All complex systems are always running in a degraded mode.…You know, each one of these resonates with me,…and if you've had any time working around complex systems,…I bet they resonate with you as well.…It's this task of managing complex systems that makes…reliability engineering a really interesting topic.…