Engineering

How We Ditched Postgres for ClickHouse to Process 12 Billion Caches Per Day

From Postgres pain to ClickHouse speed: how we re-architected caching to serve 2M+ cache queries and 20B entries per day, while maintaining ~250ms average resolution latency.

Henry Haefliger
6 min read
Engineering

Why we built vision-grounded locators instead of training a better DOM model.

Six months into building Momentic, we realized every meaningful test failure had the same root cause — and it wasn't the AI. Here's the architectural decision that changed our reliability story.

Sam Stern
12 min read
Engineering

Hot libraries and heartbreak: Struggling with Cursor, RTL, and shadcn

Why testing libraries can be a real pain to use.

Matt Andryc
3 min read
Engineering

Fetch Mocking With Playwright in Next.js 15

A deep dive into how to intercept and mock API responses using Playwright and Next.js

Wei-Wei Wu
6 min read

Close the feedback loop.