Documentation
Architecture walkthroughs and engineering rationale for the lab modules. Each article explains the non-obvious decisions and trade-offs that shaped the module.
WhoAmI — Privacy-First Architecture and Browser Fingerprinting
A deep dive into how WhoAmI separates server-side IP intelligence from client-side browser probes using a strict two-tier consent model — and why every architectural decision starts with 'what does this expose?'
Server Metrics — Real-Time Telemetry over Server-Sent Events
How a single ReadableStream and a singleton request tracker deliver live CPU, memory, RPS and error rate without an agent, a time-series database, or a third-party monitoring stack — plus the architectural choices that keep a 200-line dashboard reliable.
Weather Dashboard — API Proxy, Fan-Out, and Caching Strategy
The Weather Dashboard proxies all upstream calls server-side, fans out four parallel API requests per query, and applies three distinct cache TTLs. Here is why each decision was made and what it costs to get it wrong.
How I Build and Ship — Engineering Standards Behind This Site
A look at the engineering workflow behind this site: monorepo structure, CI pipeline, testing strategy, and the criteria a tool has to meet before it earns a production slot.