Thoughts and opinions on platform engineering, infrastructure, and building software at scale — by Michael Zavarella.https://zavarella.dev/https://zavarella.dev/blog/2025/11/24/cloud-resource-tagging/https://zavarella.dev/blog/2025/11/24/cloud-resource-tagging/The question isn't whether your infrastructure will get complex, it's whether you'll be able to understand it when it does.Mon, 24 Nov 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/11/03/lti13-oidc/https://zavarella.dev/blog/2025/11/03/lti13-oidc/LTI 1.3 replaced OAuth 1.0 with OpenID Connection and JWT-based authentication. If you're building a Tool Provider, this guide walks through the complete implementation in TypeScript.Mon, 03 Nov 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/10/29/hidden-systems/https://zavarella.dev/blog/2025/10/29/hidden-systems/If you're the person who knows how the system works, you have the responsibility to make it knowable.Wed, 29 Oct 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/10/23/strangler-fig/https://zavarella.dev/blog/2025/10/23/strangler-fig/Wrap the old, build the new, route traffic gradually, retire incrementally.Thu, 23 Oct 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/10/03/building-an-interview/https://zavarella.dev/blog/2025/10/03/building-an-interview/The mega-corps optimize for false negatives because they can. Small companies face catastrophic risk from false positives. The interview process that works for one can fail disastrously for the other.Fri, 03 Oct 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/09/25/billing-alarms/https://zavarella.dev/blog/2025/09/25/billing-alarms/You and I both don't want to see you get smacked with a wild AWS bill. Well, I get a chuckle out of it sometimesThu, 25 Sep 2025 00:00:00 GMThttps://zavarella.dev/blog/2025/09/17/a-vs-an/https://zavarella.dev/blog/2025/09/17/a-vs-an/I get frustrated when "a" and "an" get misused in writingWed, 17 Sep 2025 00:00:00 GMThttps://zavarella.dev/blog/2019/10/30/fire-and-forget/https://zavarella.dev/blog/2019/10/30/fire-and-forget/A guide to running long-running processes in SSH sessions using &, nohup, and disown to prevent hangup signals from terminating your commands.Wed, 30 Oct 2019 14:00:00 GMThttps://zavarella.dev/blog/2017/06/22/another-if-macro/https://zavarella.dev/blog/2017/06/22/another-if-macro/Creating custom if-seq and if-pred macros in Clojure for more flexible conditional logic with automatic binding and predicate testing.Thu, 22 Jun 2017 15:44:00 GMThttps://zavarella.dev/blog/2017/02/17/clojure-deref/https://zavarella.dev/blog/2017/02/17/clojure-deref/A quick guide to understanding the @ symbol (deref) in Clojure and why dereferencing is necessary for atoms, refs, and other reference types.Fri, 17 Feb 2017 02:22:00 GMThttps://zavarella.dev/blog/2017/02/07/queues-in-clojure/https://zavarella.dev/blog/2017/02/07/queues-in-clojure/Understanding FIFO queues in Clojure using PersistentQueue, with practical examples of queue operations and custom queue creation.Tue, 07 Feb 2017 22:00:00 GMThttps://zavarella.dev/blog/2017/01/19/map-vs-reduce/https://zavarella.dev/blog/2017/01/19/map-vs-reduce/A comprehensive guide to higher order functions in functional programming, covering map, filter, and reduce with practical Clojure examples.Thu, 19 Jan 2017 03:23:00 GMT