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Luke Hedger

@lukehedger.dev

Software engineer. Building things for lego.com. Distributed systems, serverless, event saucing. Wrote Serverless Development on AWS (O’Reilly) https://lukehedger.dev/ πŸ“ London

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14.11.2024
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Latest posts by Luke Hedger @lukehedger.dev

do one way doors still exist? πŸ€”

11.03.2026 00:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

> The question isn't whether you can afford to do it. It's whether you can afford to wait.

🎯

10.03.2026 23:12 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
How We Pulled It Off In Two Weeks
Instead of writing a migration proposal and spending weeks on planning, Markus built 60% of the replacement and showed it to the team. This is a key lesson in the age of coding agents: If you're trying to convince a team to do a major rewrite or feature implementation, a working demo will do more than any document.
A year ago this would be terrible advice. You'd risk weeks on something that gets scrapped.
But now that building a working proof of concept with agents costs less than writing
the proposal, the calculus has changed.

How We Pulled It Off In Two Weeks Instead of writing a migration proposal and spending weeks on planning, Markus built 60% of the replacement and showed it to the team. This is a key lesson in the age of coding agents: If you're trying to convince a team to do a major rewrite or feature implementation, a working demo will do more than any document. A year ago this would be terrible advice. You'd risk weeks on something that gets scrapped. But now that building a working proof of concept with agents costs less than writing the proposal, the calculus has changed.

have found this to be true. intuition tells you a migration is necessary, now forging ahead allows you to dis/prove assumptions asap

strawberrybrowser.com/blog/react-t...

10.03.2026 23:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
Preview
How we Rewrote 130K Lines from React to Svelte in Two Weeks We ported Strawberry's entire frontend from React to Svelte in two weeks using coding agents. It made the browser 2x faster.

myth: LLM-assisted coding means everyone is forced to use The Popular Framework forever

reality: agents will happily migrate your entire app to The Good Framework

inertia is a powerful drug but we are entering a world without moats, plan accordingly

strawberrybrowser.com/blog/react-t...

10.03.2026 16:27 πŸ‘ 154 πŸ” 18 πŸ’¬ 11 πŸ“Œ 5
aws-durable-execution-docs/aws-lambda-durable-functions-power at main Β· aws/aws-durable-execution-docs Contribute to aws/aws-durable-execution-docs development by creating an account on GitHub.

so cool to see an official kiro power for Lambda durable functions!

lots of key details in here for humans too

github.com/aws/aws-dura...

09.03.2026 09:47 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Scour Scour interesting reads from noisy feeds you can't keep up with and smaller sites you didn't know to check.

check out scour.ing - neat platform for getting a feed from the firehoses of software hype

My feed is here scour.ing/@luke

09.03.2026 09:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Oo hadn’t heard of scour before but tried it out and amazed I could get a pretty good feed with minimal effort. Thanks for the tip Alex!

09.03.2026 09:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
bunWay β€” Express-Compatible Web Framework for Bun | bunWay bunWay is an Express-compatible web framework built natively for Bun. Drop-in replacement with zero rewrites, zero dependencies, and 16 built-in middleware. Same (req, res, next) API you know, 3-4x fa...

Could be wrong but feels like this was mainly built with AI. Seeing a lot of this type of project/website spring up
Anyway, I wonder if this is a layer that more orgs will bring in-house. You don’t really more than bun serve/fetch but it does make sense to standardise middleware

bunway.jointops.dev

09.03.2026 09:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I joked about the "QA engineer for my agents" thing earlier but it's honestly so peaceful to just sit and polish software with the help of agents.

You can really fight a lot of slop with intentionality and attention to detail.

03.03.2026 05:56 πŸ‘ 15 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
An illustration of two playing cards, bearing Aljoscha and Sammy styled as face cards.

An illustration of two playing cards, bearing Aljoscha and Sammy styled as face cards.

worm-blossom.org#y2026w8

This week! Part 5 of β€œwhy is worm-blossom called that” heads to the Pacific Ocean. Sammy feels like a frog. Aljoscha is heads down (but has provided a good tune nonetheless).

20.02.2026 19:00 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
AI Is Forcing Us To Write Good Code When Best Practices Are Best

use the filesystem to describe your software (screaming architecture). prefer many small, scoped files rather than sprawling ones. turns out this is good for agents too!

> A file called ./billing/invoices/compute.ts communicates much more than ./utils/helpers.ts

bits.logic.inc/p/ai-is-forc...

20.02.2026 17:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Harness engineering: leveraging Codex in an agent-first world By Ryan Lopopolo, Member of the Technical Staff

don’t bloat your AGENTS.md - use it as a β€œtable of contents” for your repo to progressively disclose info and instructions

> A short AGENTS.md (roughly 100 lines) is injected into context and serves primarily as a map, with pointers to deeper sources of truth elsewhere

openai.com/index/harnes...

20.02.2026 16:56 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

really like the idea of continuous agents for reviewing integrated changes, updating docs, surfacing risks

20.02.2026 13:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Definitely a builder at heart and feel very energised using AI. I feel like I’m actually able to spend more time (and enjoyment) on the crafting now - especially docs, tests and design. Things that used to get in the way of building

20.02.2026 12:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Claudebin - Your Claude Code Sessions Deserve a URL Turn your Claude Code sessions into shareable, embeddable, and continuable artifacts.

claudebin.com

19.02.2026 13:31 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Is the penny proxy itself serverless?

18.02.2026 09:02 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Claude Code custom status line Claude Code custom status line. GitHub Gist: instantly share code, notes, and snippets.

here's a guide to setting it up! gist.github.com/lukehedger/5...

13.02.2026 14:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Claude Code session in Ghostty terminal, showing a custom status line with model name, context % used and $ cost

Claude Code session in Ghostty terminal, showing a custom status line with model name, context % used and $ cost

got a nice little custom status line in Claude Code!

model name, context % used and $ cost

13.02.2026 14:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Nice! Same here! I feel like my job is exciting again

12.02.2026 07:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I think you’re right here Pete. Going to be interesting to see the techniques we develop for optimising context.

What measurements/signs do we have right now to tell us the agent’s performance is suffering due to bloated context?

12.02.2026 07:53 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Aurora DSQL: Serverless, Scalable, Global OLTP Database System (Marc Brooker)
Aurora DSQL: Serverless, Scalable, Global OLTP Database System (Marc Brooker) YouTube video by CMU Database Group

Now on YouTube, Monday's CMU Database Seminar on Aurora DSQL. Thanks again to the awesome CMU folks (especially Andy Pavlo) for inviting me to do this talk.

www.youtube.com/watch?v=mK2h...

11.02.2026 20:14 πŸ‘ 13 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Really? What’s your job?

11.02.2026 22:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

What does it look like?

26.01.2026 14:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

AI-generated code shifts the real burden of development onto *validation*, yes.

But humans can't validate your code by reading it any more than tests can validate it by turning green.

"Is it gonna work? Is it gonna work?? IS IT???" Bub, you don't get to know til you put it in production.

24.01.2026 03:15 πŸ‘ 38 πŸ” 7 πŸ’¬ 5 πŸ“Œ 1

Wow! Thanks for the link. This is pretty crazy

21.01.2026 17:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Oh really!? In what way?

21.01.2026 14:37 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
CodeBreach: Supply Chain Vuln & AWS CodeBuild Misconfig | Wiz Blog Wiz Research discovered CodeBreach, a critical vulnerability that risked the AWS Console supply chain. Learn how to secure your AWS CodeBuild pipelines.

Very cool research on a CodeBuild misconfiguration which could have had significant consequences. I’m a bit disappointed that there wasn’t more done to secure the supply chain after the Q Developer incident.
www.wiz.io/blog/wiz-res...

15.01.2026 18:46 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
There aren’t yet many things in cloud computing that have the exact shape Sprites do:

Instant creation
No time limits
Persistent disk
Auto-sleep to a cheap inactive state

There aren’t yet many things in cloud computing that have the exact shape Sprites do: Instant creation No time limits Persistent disk Auto-sleep to a cheap inactive state

One of the interesting things about sprites to me is how similar they are to Durable Objects / Virtual Actors fly.io/blog/design-...

15.01.2026 19:00 πŸ‘ 0 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Post image

Off to the pub

status.claude.com

14.01.2026 10:51 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

I understand the devs who mourn the loss of their identities because agents write code pretty well now. This is your craft. You trained for this.

But no one said you have to stop writing code to use agents.

Chefs still cook. They just use microwaves and air fryers too.

14.01.2026 01:08 πŸ‘ 12 πŸ” 1 πŸ’¬ 5 πŸ“Œ 0