Field Signal · Curated Reading
The Engineering
Signal.
High-signal field notes, architecture teardowns, and engineering writing from 50 publications. A focused reading queue for becoming a stronger end-to-end engineer. Updated 21 Aug.
New ways to buy ChatGPT ads
OpenAI expands ChatGPT ads with a beta self-serve Ads Manager, CPC bidding, and enhanced measurement tools—built to protect privacy and keep conversations separate from ads.
OpenAI and PwC collaborate to reimagine the office of the CFO
OpenAI and PwC are partnering to help enterprises use AI agents to automate finance workflows, improve forecasting, strengthen controls, and modernize the CFO function.
Kubernetes v1.36: Admission Policies That Can't Be Deleted
If you've ever tried to enforce a security policy across a fleet of Kubernetes clusters, you've probably run into a frustrating chicken-and-egg problem. Your admission policies are API objects, which means they don't exist until someone creates them, and they can be deleted by anyone with the right ...
Discord Patch Notes: May 4, 2026
Check out the finer details of the more technical fixes implemented into Discord recently.
Links to CSS colour palettes
A while back I decided to stop using Tailwind for new projects and to just write vanilla CSS instead. But one thing I missed about Tailwind was the colour palette (here as CSS). If I wanted a light blue I could just use blue-100 and if I didn’t like it maybe try blue-200 or blue-50. I’m not very goo...
How OpenAI delivers low-latency voice AI at scale
How OpenAI rebuilt its WebRTC stack to power real-time Voice AI with low latency, global scale, and seamless conversational turn-taking.
Testing Vue components in the browser
Hello! One of my long term projects on here is figuring out how to write frontend Javascript without using Node or any other server JS runtime. One issue I run into a lot in my frontend JS projects is that I don’t know how to write tests for them. I’ve tried to use Playwright in the past, but it fel...
Kubernetes v1.36: Pod-Level Resource Managers (Alpha)
Kubernetes v1.36 introduces Pod-Level Resource Managers as an alpha feature, bringing a more flexible and powerful resource management model to performance-sensitive workloads. This enhancement extends the kubelet's Topology, CPU, and Memory Managers to support pod-level resource specifications ( .s...
Kubernetes v1.36: In-Place Vertical Scaling for Pod-Level Resources Graduates to Beta
Following the graduation of Pod-Level Resources to Beta in v1.34 and the General Availability (GA) of In-Place Pod Vertical Scaling in v1.35, the Kubernetes community is thrilled to announce that In-Place Pod-Level Resources Vertical Scaling has graduated to Beta in v1.36! This feature is now enable...
Enabling a new model for healthcare with AI co-clinician
Researching the path to AI-augmented care and development of an AI co-clinician.
RLS sounds great until it isn't
PostgreSQL's Row Level Security sounds like a clean way to enforce access control at the database layer, but the foot-guns, pooling incompatibilities, and performance traps often make it more trouble than it's worth.
Introducing Advanced Account Security
Introducing Advanced Account Security: phishing-resistant login, stronger recovery, and enhanced protections to safeguard sensitive data and prevent account takeover.
Where the goblins came from
How goblin outputs spread in AI models: timeline, root cause, and fixes behind personality-driven quirks in GPT-5 behavior.
Kubernetes v1.36: Tiered Memory Protection with Memory QoS
On behalf of SIG Node, we are pleased to announce updates to the Memory QoS feature (alpha) in Kubernetes v1.36. Memory QoS uses the cgroup v2 memory controller to give the kernel better guidance on how to treat container memory. It was first introduced in v1.22 and updated in v1.27. In Kubernetes v...
Granite 4.1 LLMs: How They’re Built
Open the source for the full engineering note.
Building the compute infrastructure for the Intelligence Age
OpenAI scales Stargate to build the compute infrastructure powering AGI, adding new data center capacity to meet growing AI demand.
Fragments: April 29
Chris Parsons has updated his guide on using AI to code. This is his third update, what I like about it is that he gives a lot of concrete information about how he uses AI, with sufficient detail that we can learn from him. His advice also resonates with the better advice I’ve seen out there, so the...
Cybersecurity in the Intelligence Age
OpenAI outlines a five-part action plan for strengthening cybersecurity in the Intelligence Age, focused on democratizing AI-powered cyber defense and protecting critical systems.
You’ve Got (Too Much) Mail: Behind the Scenes of the 3/25/26 Voice Outage
On March 25th, voice and video on Discord suffered major degradation beginning at 12:13 PDT, lasting a little over three hours. Learn how the issue originated, how it affected systems across Discord, how we recovered, and how we’re preventing the same problem from reoccurring.
DeepInfra on Hugging Face Inference Providers 🔥
Open the source for the full engineering note.
Kubernetes v1.36: Staleness Mitigation and Observability for Controllers
Staleness in Kubernetes controllers is a problem that affects many controllers, and is something may affect controller behavior in subtle ways. It is usually not until it is too late, when a controller in production has already taken incorrect action, that staleness is found to be an issue due to so...
Introducing NVIDIA Nemotron 3 Nano Omni: Long-Context Multimodal Intelligence for Documents, Audio and Video Agents
Open the source for the full engineering note.
Structured-Prompt-Driven Development (SPDD)
LLM programming assistants have demonstrated considerable value, but mostly with individual developers. The internal IT organization in Thoughtworks has been using them for their teams and have developed a method and workflow called Structured Prompt-Driven Development (SPDD). Wei Zhang and Jessie J...
Five principles for governed autonomy with enterprise AI
How to turn opaque agent behavior into governed, provable workflows. Based on our own tried and true experience with Redpanda’s customer Slackbot.
OpenAI models, Codex, and Managed Agents come to AWS
OpenAI GPT models, Codex, and Managed Agents are now available on AWS, enabling enterprises to build secure AI in their AWS environments.