Dev Systems
Single-tenant Titus: VM-level isolation on a multi-tenant container platform
Samartha Chandrashekar & Nick ParkerYou click play on a Friday night, and in the second that follows, dozens of services answer in milliseconds. Most of them run on Titus, our internal container platform. Titus is, in essence, a Kubernetes-based...
Single-tenant Titus: VM-level isolation on a multi-tenant container platform
Samartha Chandrashekar & Nick ParkerYou click play on a Friday night, and in the second that follows, dozens of services answer in milliseconds. Most of them run on Titus, our internal container platform. Titus is, in essence, a Kubernetes-based...
Run iOS Live Activities reliably for very large audiences
Now available on Ably Pub/Sub, with push-to-start and Apple broadcast channel support. Live Activities let your users follow a game, a delivery, or a flight from their Lock Screen at a glance, without ever opening your app. But customers running Live...
Architecting for uncertainty - part 5: DevOps defines how a fast-flow organization works
This is the fifth in a series of articles based on my talk Architecting for Fast Flow: Thriving Amid Uncertainty.In this series, I define the term fast flow and explain why it has become an essential software delivery capability.I discuss how fast fl...
Show HN: Rouler – Steer Windows traffic per app or IP across multiple interfaces
Hi HN,Rouler is "rules for your routes". It allows you to steer network traffic across multiple network interfaces on Windows. For example:- Run Tailscale, Mullvad and OpenVPN official clients simultaneously.- Use Rouler to send Slack via t...
Show HN: Agent-Zero – Starter template for AI-native coding projects
Hi All,Agent-Zero is a GitHub template that you can use for new coding projects that use AI-first development workflows. It includes the minimum necessary to nudge agents to write good code, work well in sandboxes, and get stuff done on GitHub (e.g....
Automate medical coding with Step Functions and Amazon Bedrock AgentCore
With AI agents, you can automate medical coding while keeping the workflow deterministic, auditable, and subject to human approval. The key is division of labor: the workflow engine owns sequencing and approval gates, while agents reason within indiv...
Show HN: IDE for a general-purpose visual programming language "Pipe"
I'm happy to announce the release of the web-based Pipe IDE, availablle by clicking button "Try Pipe IDE" on website.Pipe IDE requires no account - all data is stored locally in your browser's database, keeping friction to a minim...
Architecture Decision Record: now in many more languages
I maintain the architecture decision record repository and today I'm launching many links for many languages:https://github.com/architecture-decision-record/architecture-decision-recordI get a lot of people requesting transla...
Backpressure in AI streaming: change how tokens move, keep each response one message
Backpressure in AI streaming can build anywhere from inference to the client, but delivery is where handling it can change the response itself. The three usual approaches there (buffering, batching, and rewriting a stored record) can change how the r...
What a room of engineers asked me about realtime resilience
I spoke about Ably's approach to resilience at the AWS Cloud Resilience Roadshow in Dublin on 22 September 2026, and the questions afterwards covered CDNs, regional failover, outages, message ordering, and capacity. They got me reflecting on which pa...
GenRecs Tokenization: Transforming Ads Recommendation at Meta with Stable Model Vocabulary
Generative Recommenders (GenRecs) represent a paradigm shift from scoring every ad to reasoning about ad content and user preferences together in order to predict the best outcome for advertisers. Leveraging the world knowledge built into LLMs makes...
The Thin Orchestrator: How We Made Our AI Agents More Reliable by Giving the Router Less to Do
Sometimes, giving an AI agent all of the knowledge it needs is the wrong approach. At Meta, we’ve seen notable improvements in efficiency and accuracy by keeping the orchestration layer of our data pipeline agents deliberately thin: It routes w...
Inside Prometheus: Meta’s Journey to a Gigawatt-Scale Supercluster
With the recent release of the Muse family of foundational models, we want to take you inside the infrastructure that has made it all possible.The first phase of Prometheus, our gigawatt-scale supercluster, is already complete and we’re working towar...
Show HN: Beeline Multiplayer Agent Harness
Shipped Beeline today.
It's a team chat for humans and agents - a kind of multiplayer harness. You can bring your codex, Claude code, opencode subscriptions and also works with pi and goose. We built beeline itself with early versions of beelin...
Show HN: Gondwana, a code-first C#/.NET game engine with WebGL
Gondwana is a 2D/2.5D game engine for C#/.NET 8 that I’ve been building over the past 16 months, using SkiaSharp for rendering. I've spent my career creating web and distributed apps and that has influenced the engine's developmen...
Ontology-Driven Observability: Building an End-to-End Knowledge Graph at Netflix Scale
Prasanna Vijayanathan, Renzo Sanchez-SilvaWhen Jake Paul and Mike Tyson stepped into the ring in November 2024, we delivered the fight to roughly 65 million concurrent streams. On an ordinary day our infrastructure takes in more than 2 billion reques...
How are you centralising AI for development at your company?
I'm asking this because I'm seeing some frustrating patterns and if I may be bold, I think my answer is the correct one.Here's one I'm seeing: its the SDLC agent pattern and I think its wrong.Step 1: you have good AGENTS.md docume...
How Meta Built Forum With AI-Native Engineering
Meta’s newest app,Forum, is for anyone who wants to go deeper into the conversations in their Facebook groups.To build Forum, Meta engineers adopted a whole new way of working by bringing an AI agent into the development cycle.We’re shari...
2026 World Cup: Breaking Records, Spiky Charts and Reliability at Scale
Every four years, the World Cup becomes the largest planned stress test of our infrastructure. This year it also set an all-time record!There are a few moments throughout the year, like New Years Eve, that really let us see the collective impact of e...