I like thinking about monitoring and alerting a lot. SLOs have been one of my latest obsessions over the past few months. However, all these metrics are worthless if left unattended! Worse than worthless. …

If you’re in the mood for a challenging book, then Designing Data-Intensive Applications (often known as DDIA) is exactly what you need. It packs an insane amount of content inside its ~500 pages. I can’t think of a better candidate to learn about distributed systems at scale. Full Attention Demanded The book covers…

I used to pay little attention to automated alerts before. Until I started to be On-Call regularly, that is. Such a powerful motivator! Few things sharpen your thoughts regarding Type I and Type II errors more than waking up at three in the morning due to a misconfigured alert. Since…

In our previous post, we talked about the reasons that led us to consider a micro frontend architecture for Partner Home, the supplier portal for Wayfair. Now it’s time to dive into the details. In this post, we’re going to talk about how we leveraged Module Federation to implement decoupled…

If you want to expose an API publicly on the Internet, authorization will be a requirement for you sooner or later. You want to verify that the client consuming the API has the appropriate permissions. This guide is exactly about that. We’ll be securing an API written using Ruby On…

Have you ever been part of an On-Call rotation? If so, you know how annoying it is to have monitoring alerts that you can’t trust. If they don’t trigger, you’ll live in fear of missing an incident. If they trigger too much, they won’t let you sleep. …

In my previous post, Starting a New App With Redux? Consider Context API First, I wrote about the Context API as a viable alternative to Redux. In this post, I want to show how a React application using Redux looks when using the Context API. First Considerations I’m assuming that my previous…

Agile development has a complex relationship with management. Some old school organizations want to call themselves agile, without changing anything substantive. So they maintain the same hierarchies as before and keep decisions out of the team. But they use story points. Others react to this and go the opposite way…

Technical interviews are a contentious topic, to say the least. It applies both as a candidate and as an interviewer. It feels that you end up sinking a lot of time into it, often with little to show for it. More concretely, it seems that take-home coding assignments are becoming…