Carlos Espada

@carlosespada.bsky.social

Front-end developer. Cyclist. Fan of trains, dinos and XIX century travels. Trying to do my part for making an accessible, light and fast internet for everyone.

I’ve been working with a client who runs a lot of social media and ad campaigns, so we’ve been deploying the experimental `No-Vary-Search HTTP` header. It’s amazing to see it actually working! Read all about it here: csswizardry.com/2026/05/bett...

Better Browser Caching with No-Vary-Search – CSS Wizardry

No-Vary-Search lets HTTP caches ignore irrelevant query parameters such as UTM tags, while still keeping meaningful ones like product variants in the cache key.

csswizardry.com

Another day, another data set telling us what we already knew. In their AI Engineering Report, Faros detail what they call an “acceleration whiplash” effect caused by AI code gen. It's the same “downstream chaos” that DORA and CircleCI saw in their data. codemanship.wordpress.com/2026/05/10/s...

Slow. The. F**k. Down.

“Slow is smooth, and smooth is fast.” US Navy SEALS training mantra Another day, another data set telling us what we already knew. In the latest AI Engineering Report from Faros, the so…

codemanship.wordpress.com

My social media feeds are full of posts from people talking about the sophisticated AI agents and harnesses they're building, but I'm not seeing much in the way of finished software. Are folks too busy building recording studios to make any music? codemanship.wordpress.com/2026/05/01/i...

Is It Time To Get Back To Fundamentals?

I have a friend who built a recording studio in his garden. The building – an adapted garden office – cost £15,000. Inside, he installed a pre-owned Neve 24-track mixing console with mo…

codemanship.wordpress.com

It's becoming ever clearer that, far from leading to "super-intelligence", scaling LLMs is more likely to end at "super-mediocrity" - producing outputs that are closer to the average of their training data. For software developers, this has implications. codemanship.wordpress.com/2026/02/25/s...

Super-Mediocrity

March will be the third anniversary of the beginning of my journey with Large Language Models and generative “A.I.” At the time, we were all being dazzled – myself included &#8211…

codemanship.wordpress.com