Blog

• Sep 03, 2026Keeping DNS zones organized with zone delegation

  DNS is one of those things that works so well in the background that nobody thinks about it until someone accidentally deletes an A record five minutes before a demo. As infrastructure grows and more environments show up, dumping every record for every environment into one giant hosted zone starts to feel a lot like that moment, just waiting to happen. Zone delegation is the fix, and it's simpler to set up than most people expect.

• Aug 11, 2026Creating a Lambda deployment script

  You've got a Lambda running in production and a shiny new image sitting in ECR. The lazy move is to update the image URI, walk away, and hope for the best. The problem is that this swaps the code for everyone, instantly, with no safety net. If the new version is broken, congratulations, it's broken for 100% of your traffic before you even finish your coffee. What you might be looking for is to publish an immutable version, then shift traffic onto it in a controlled way, all from a single script and preferably in an automated manner.

• Aug 04, 2026Managing document metadata in React 19

  This post's title may seem odd to you, if you're up to date, but a few things have changed from React 18 to 19, and one of them is how you manage document metadata. Before it, you likely had some shenanigans going on, like react-helmet or react-helmet-async in place to dynamically update your document title, inject custom metadata, links, scripts or even styles. Thankfully, with React 19 you'll very likely be able to drop all of that in favor of simplicity and good old HTML.

• Jul 31, 2026Speeding up your React Router server-side-rendered (SSR) app with Hono

  If you're running a React Router app in framework mode, you get SSR out of the box and for production it hands you @react-router/serve, a small server built on top of Express. While it does the job, Express carries a bit of history (and weight) with it, so if you're the kind of person who wants a leaner server, or just more control over what happens around your app, there's a really nice alternative that drops in with almost no glue.

• Jul 29, 2026Reducing Cognito machine-to-machine (M2M) token costs

  Cognito's machine-to-machine authentication is just the OAuth 2.0 Client Credentials flow. To use it, your service hands Cognito a client ID and a client secret, and it gets back a short-lived access token. It's all pretty handy and every successful token request costs you almost nothing. However, when you have a fleet of services asking for a brand-new token on every single call, you're suddenly paying AWS just to hand you a fresh token a few million times when you already have a valid one. Thank goodness that with a few small changes most of those requests simply disappear.