Saturday 17 October

Today

Read the concept, break it on a real system, then defend a design out loud.

1. 1Lesson 01 · 10 minWhy the average liesRED metrics, percentiles (p50, p95, p99)start here
2. 2Mission 01 of 23 · 45-60 minOpen your eyes: a dashboard tourRED, p50/p95/p99, why the average lies
3. 3AI lesson 01 · 14 minAn LLM is an unreliable dependencynondeterminism, pass^k, structured output, timeouts
4. 4Interview · junior · 45 minDesign a unique ID generatordistributed-ids, shardingtoday

This is the hosted demo: read every lesson, mission and incident file, and answer the interview question (your answers stay in this browser). Running the lab commands needs your own machine: see a mission.