Se7en Deadly Deployment Sins

A presentation at DevDays Vilnius in in Vilnius, Lithuania by Philipp Krenn

Do you have something to confess? Or are you still in denial — knowing that you're doing something wrong, but you cannot say for sure what it is? In this talk, we'll go through our deployment sins and how to avoid them:

  • Gluttony: Adding all the dependencies — both in size and number.
  • Greed: Yes, I want to use the biggest and slowest application server possible.
  • Sloth: Continuous Deployment or Delivery — who would need that?!
  • Lust: Of course I'm using containers, microservices, and every latest trend for every project!
  • Pride: Once something is in production it's purely an ops problem.
  • Envy: Why should I rely on an external library, when I can lovingly handcraft it all myself?
  • Wrath: Logging and monitoring are for the faint of heart!


The following resources were mentioned during the presentation or are useful additional information.

  • Notes on Distributed Systems for Young Bloods

    I’ve been thinking about the lessons distributed systems engineers learn on the job. A great deal of our instruction is through scars made by mistakes made in production traffic. These scars are useful reminders, sure, but it’d be better to have more engineers with the full count of their fingers.

    New systems engineers will find the Fallacies of Distributed Computing and the CAP theorem as part of their self-education. But these are abstract pieces without the direct, actionable advice the inexperienced engineer needs to start moving. It’s surprising how little context new engineers are given when they start out.

    Below is a list of some lessons I’ve learned as a distributed systems engineer that are worth being told to a new engineer. Some are subtle, and some are surprising, but none are controversial. This list is for the new distributed systems engineer to guide their thinking about the field they are taking on. It’s not comprehensive, but it’s a good beginning.

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