Reducing Lambda cold starts from 3 seconds to 200ms
How we reduced our serverless cold start times from 3 seconds to under 200ms by optimizing Lambda functions. The cold start problem AWS Lambda …
Blog Archive
All blog posts organized by year
2025
Building a real-time collaborative code editor
Building a real-time collaborative code editor with WebSockets, operational transformation, and presence awareness. Why real-time collaboration? …
2024
Building a collaborative spreadsheet with CRDTs
How we built a Google Sheets alternative using conflict-free replicated data types for seamless collaboration. The challenge When multiple users edit …
Building a game server in Rust
How we built a multiplayer game server handling 10,000+ concurrent connections with sub-20ms latency. Why Rust for game servers? Traditional game …
Running image classification in the browser with TensorFlow.js
How we deployed a 10MB image classification model that runs entirely in the browser using TensorFlow.js and WebAssembly. Why run ML in the browser? …