Because Developers are Awesome

Caching options in Cloudflare Workers

July 01, 2026 7 minute read

When you get into systems design, eventually you are going to have to deal with caching. I am currently writing my serverless MUD and part of that system requires an automatic registration of users hitting the API. This means that every single API call reads from Cloudflare D1 in the hot path. Reading from D1 is incredibly fast, but it’s not latency-free, particularly during periods of high load. This got me thinking about caching the read “somewhere cheaper”. By cheaper, I mean lower la...

Testing in an agentic coding world

June 07, 2026 6 minute read

I’ve been writing a lot of code with agents recently. I’ve even written about a lot of it here. However, I began to notice a pattern about testing. My LLM is great about writing tests to go along with their code and it always ends up with a 100% pass rate. Most of the time, the LLM will modify their tests when they do fail the first time. But what am I really testing here? Agents write code to get to completion as quickly as possible. It’s built into their DNA - please the user as fa...

Build a video processing pipeline with Cloudflare

May 28, 2026 11 minute read

Although most of the focus these days is on AI agents, they aren’t always the right choice. If what you want to do can be modelled by a flow chart, you probably want to do a workflow instead. Let me take you through two examples: I have a set of topics - provide ongoing discovery of blogs and articles related to those topics, for each new article you find, make a determination of whether it will be interesting or not - if you think it will be interesting, then summarize it and send th...

Has AI killed collaboration?

May 25, 2026 4 minute read

Last week, I sat in a conference room in Lisbon for a week of learning and collaboration. It turns out, my team is a bunch of very individual contributors who rarely have a need for collaboration, and the advent of AI into our daily work has made the need even less. This got me thinking about the impact of AI on that very essential skill. Have we lost even more human interaction opportunities? Perhaps, in using AI for everything, we will lose the ability to collaborate, which in turn may des...

Async APIs with Cloudflare Workers and Queues

May 05, 2026 8 minute read

Continuing my journey into learning the Cloudflare Developer Platform, I decided to figure out how to use Queues today. While Workers are the central compute component of the platform, you need asynchronous processing for AI agents and complex workflows. Queues allow you to offload heavy tasks so the main Worker doesn’t time out or hit memory limits. Beyond simple buffering, queues are a core concept in distributed systems and serverless design, allowing you to move from simple APIs to r...

Maintaining state in a serverless world: Cloudflare Durable Objects

May 01, 2026 9 minute read

When you look at the Cloudflare Developer Platform, you will quickly start drawing parallels between what Cloudflare provides and what the hyperscalers (such as AWS and Azure) provide. Sure, there are technical differences. However, you can build with the same basic primitives: Service Cloudflare AWS Azure GCP Compute Workers Lambda Functions Cloud Functions Database D1 Aurora S...

Introduction to Cloudflare AI Gateway

April 29, 2026 6 minute read

Today, I am continuing my deep-dive into every aspect of the Cloudflare Developer Platform by getting to grips with the AI inference capabilities of the platform. To do this, I’ve written a small AI Chat app that you can quickly deploy to your own Cloudflare dashboard if you like. Let’s take a look at some of the learnings today. My intent with todays investigation was to make an app that looks like one of the many public AI chat systems. I think that Google Gemini looks “the best” of t...

Introduction to Cloudflare Workers

April 26, 2026 11 minute read

I’ve recently started working on bringing myself up to speed on the Cloudflare Dev Platform, which is a serverless development platform that runs your applications at the edge (and Cloudflare has more than 300 points of presence, so the edge is fairly spread out). This is the first in a series that will go through all the major features of the Cloudflare Dev Platform, but attempt to make some sense out of what each feature is best at and what works well together. Let’s say you are using C...

Tools for troubleshooting DNS

April 21, 2026 9 minute read

One of the best things about joining a new company is that you get to go to a series of training for that company. For Cloudflare, I get a technical bootcamp focused on Internet technologies. I learned Internet technologies a long time ago, so it’s a chance to catch up and immerse myself in the improvements that have happened along the way. My role recently has focused on developers (and it still does), but that doesn’t mean you should be oblivious to standard trouble shooting. Take DNS...

Setting up a project for Agentic AI

April 19, 2026 13 minute read

In my last three articles, I produced a set of recipes and rules for doing AI-first development using Spec-Driven Design. These rules really get you started in how to think about development when the coding (the easy part) is done for you. But how do you get started? When I am setting up a new project, my process has now changed. It starts off the same, but the additional files I need to write before I can start coding have changed. Here is what I do: 1. Scaffolding Inevitably, I hav...

Adrian Hall