Learning in public

Things I'm learning
about how the web works

Interactive guides built while working through web fundamentals — from how a local server works to system design patterns used in production.

Topics
01
How the Web Works
Local servers, HTTP, headers, caching, origins, ports, CDNs, and DNS — from localhost to production.
HTTP DNS CDN Cache-Control
complete →
02
The Network Layer
TCP handshakes, HTTP/2 multiplexing, TLS certificates, WebSockets, and why REST and GraphQL make different trade-offs.
TCP TLS HTTP/2 WebSockets
coming soon
03
Auth & Security
Cookies, sessions, JWTs, OAuth 2.0, CSRF, XSS, and a deep dive into CORS preflight requests.
JWT OAuth CORS CSRF
coming soon
04
Databases & APIs
SQL indexes, relational vs NoSQL, pagination patterns, job queues, and the N+1 problem ORMs hide.
SQL Postgres REST Queues
coming soon
05
Frontend Performance
The browser rendering pipeline, JS loading strategies, image formats, bundle analysis, and Core Web Vitals.
CWV LCP Vite Rendering
coming soon
06
Infrastructure & Deployment
CI/CD pipelines, Docker containers, secrets management, feature flags, and production observability.
Docker CI/CD GitHub Actions
coming soon
07
System Design
Load balancing, microservices vs monolith, rate limiting, real-time systems, and end-to-end feature design.
Scaling SSE Idempotency
coming soon