Lessons
Learn the concepts
Six lessons. Every one starts with a 1-line analogy in plain English, then the picture, then the technical detail, then a quick check.
01
Browser internals
Reflow, paint, composite, event loop
Start lesson
02
Rendering modes
CSR vs SSR vs RSC vs streaming
Start lesson
03
Async state
TanStack Query + XState
Start lesson
04
Performance
LCP / INP / CLS
Start lesson
05
PAM architecture
iGaming domain & multi-tenant
Start lesson
06
Security
XSS, CSRF, CSP, JWT
Start lesson