Benjamin Yule

VP Eng for Workers @Cloudflare. Previously helping the world breathe better - CTO @Spire_health (YC W15).

[Benjamin Yule @bjyule]

@thomas_ankcorn The best part was - when I asked how you tested your code (not if), fully expecting you to give me BS, you just said “we don’t” - instant trust.

[Kenton Varda @KentonVarda]

Anyone feel like your Workers are running faster today?

[Benjamin Yule @bjyule]

George - Are you pushing messages into the Queue via Workers bindings or using the HTTP API? Are you sure that in both cases you are capturing failures properly? Keep in mind that with bindings errors are propagated via exceptions and you need to catch them.

We have zero tolerance for data loss and take these sort of issues seriously. Usually the issues are with failing to capture insertion errors. Can you DM me with your support ticket and account information?

[Benjamin Yule @bjyule]

It depends on what the symptoms of your bug are. Is it throwing an exception? Logic error? Something else?

What would you reach for if you had this exact same issue on any other platform?

Workers have production logs, tails, local dev with chrome dev tools attachment, remote dev with chrome dev tools attachment

How would you debug this in AWS Lambda or similar ?

[sunil pai @threepointone]

ok, so. dynamic workers.

when LLMs are generating a ton of code, you need something better to run it in.

imagine eval, but better. way better. control what's exposed to the env. control outgoing fetches. zero cold start.

left: code in a string. right: output.

https://t.co/qS07TNyThb

[Kenton Varda @KentonVarda]

OK folks, today is the day when I reveal what this tweet was about.

We made MCP work better by:
1. Convert the MCP tools into a TypeScript API
2. Tell the agent to write code against this API

We call it "code mode"

It uses a new feature in Workers: Dynamic Worker Loading

[Mark Dalgleish @markdalgleish]

Super excited to see @Cloudflare launching v1 of their @vite_js plugin, with first class React Router v7 support.

Huge shout out to James Opstad for working with us to ensure support on top of our recent Vite Environment API work.

https://t.co/iI4Zpi1tH2

[Benjamin Yule @bjyule]

@elithrar Reading this at the airport 🤣

[sunil pai @threepointone]

yo this is awesome

- built for cloudflare
- rsc over websockets
- first class queues/auth/db/etc

it's a contender!

[David Cramer @zeeg]

Has anyone else shipped a production-ready remote MCP yet or is Sentry the first?

Was pretty easy to do on CF so I gotta imagine we're not alone. Curious how others have approached the UX.

[Benjamin Yule @bjyule]

@benallfree @vike_js Where did you get stuck? Which demo code are you referring to?

[Benjamin Yule @bjyule]

@thdxr @soupdumplingcat That’s why embedded SQLite in a Durable Object.

[Benjamin Yule @bjyule]

@zebassembly So who dropped the ball

[Benjamin Yule @bjyule]

These guys get it

[Nathan Flurry 🔩 @NathanFlurry]

🍕 SQLite-on-the-server isn't just for hobby projects - it's actually better at hyperscale than microscale

With @CloudflareDev Durable Objects & @tursodatabase, SQLite-per-partition is the future of distributed databases at scale

Blog post below 📝

[Erik @erikcorry]

Want to work with me on V8? If you have commits under your belt on V8, or perhaps a similar VM, Cloudflare is hiring. DM me.

[Benjamin Yule @bjyule]

@ilias_yahia @CloudflareDev So if your Worker runs for 60 seconds - that is 128MB*60s = 7680MB-sec = 960GB-sec

[Benjamin Yule @bjyule]

@ilias_yahia @CloudflareDev I'm sorry this is confusing! We use GB-seconds to make it 'easy' to compare to other platforms (such as AWS Lambda) that have been using these units for much longer.

A GB-second is the amount of memory you are using (128MB) multiplied by the amount of time your worker is active

[Benjamin Yule @bjyule]

@jasnell Have you tried programming?

[Benjamin Yule @bjyule]

🥖 partysub.

[sunil pai @threepointone]

🎈 PartyServer: Build real-time apps on Workers

I'm super happy to announce PartyServer (beta), a new way of building real-time apps on Workers. Based on everything I've learnt from building PartyKit, with a new and ambitious roadmap. Today's Day 1.

https://t.co/w3w7SxnwKS

🧵

[sunil pai @threepointone]

🎈 PartyServer: Build real-time apps on Workers

I'm super happy to announce PartyServer (beta), a new way of building real-time apps on Workers. Based on everything I've learnt from building PartyKit, with a new and ambitious roadmap. Today's Day 1.

https://t.co/w3w7SxnwKS

🧵