Operations | Monitoring | ITSM | DevOps | Cloud

In January 2024, I wrote about removing all advertising cookies and user tracking from sentry.io. It was eight months into the decision at the time, and we were still figuring out what broke and what surprised us. That post struck a nerve: it became one of the most-read things we’ve ever published, probably because everyone building or running a product on the web was watching the same cookie deprecation timeline and wondering what would actually happen if someone just ripped the bandaid off.

N+1 queries are the most common performance problem in Rails applications. ActiveRecord’s lazy loading means every belongs_to, has_many, and has_one association is a potential N+1 waiting to happen. The good news is that Rails gives you multiple ways to fix them, and tools like Scout can find them automatically. This guide covers everything a Rails developer needs to know about N+1 queries: what they are, how to fix them, how to prevent them in CI, and how to detect them in production.

If you’re running infrastructure on Azure, you’ve probably dealt with the split between your Azure-native monitoring and the rest of your stack. Your VMs, databases, and Kubernetes clusters generate platform metrics through Azure Monitor, but those metrics live in a separate world from the OS-level, application, and on-prem metrics you’re already watching in Netdata.

Observability in software is often framed as a choice between self-hosted and SaaS: manage it yourself, or pay a vendor to handle your data. Both self-hosted and SaaS approaches have their merits, but assuming you must choose one exclusively over the other leads to poor trade-offs: either overcommitting to an all-in-one SaaS despite spiraling costs, or fully self-hosting when it’s unnecessary.