The hidden nuance of the JavaScript File API

I’ve found online resources surrounding architecting a webhook publisher to be lacking for what’s possible to describe in 40 minutes during an interview. While I’d normally recommend HelloInterview, they don’t have a breakdown (yet!), so here is how I’d approach this at a staff level candidacy. Functional requirements: Clients register an HTTP...

React server components. Streaming server side rendering. Edge compute. Web app architecture advancements are making classic SPAs appear long in the tooth. Time to see what I’ve been missing, and try to keep up with the Joneses (negative connotation fully implied). I might suffer from Perpetual Reengineering Syndrome as this is the umpteenth time...

I’m moving more code into Cloudflare workers everyday as they are cheap, fast, and powerful. But it hasn’t been without struggle. This is the story of one such struggle with a troublesome endpoint. The endpoint in question verifies the OpenID authentication signature directly with Steam. In short, this code runs after the user authenticates with...

In an app that has S3 files and a Postgres database storing file metadata, we might have a DELETE route that looks something like: Select file from db, and if it does not exist throw a 404. If the file’s owner isn’t our session’s user, check the db if the session’s user is an admin Delete file from the db Delete file from S3 The above steps...

I came across some high usage under my Vercel account. Vercel usage donut charts. Cropped for brevity What is “Fast Origin Transfer”? The docs are vague, and whatever it is, seems like I’m about at my limit. Vercel used to have straightforward pricing, but they recently updated their model. Instead of...