Infrastructure & Cloud
Servers, containers, and cloud platforms - where your code actually runs.
Watch it animated → Interactive, click-through walkthroughs for Infrastructure & Cloud concepts.Basic
What a Server Actually Is A server is just a computer running a program that waits for requests and answers them - this guide demystifies the word, the role, and the path from a box under a desk to the cloud.
SSH & Keys, Explained What SSH actually is (an encrypted remote terminal into another machine), how key pairs replace passwords, and how to live with SSH day to day - config shortcuts, the agent, and the errors that bite everyone.
Intermediate
Docker Without the Magic What a container actually is, how a Dockerfile builds an image layer by layer, and the gotchas that bite everyone - so 'works on my machine' stops being a thing that happens to you.
Docker Compose for Real Projects Real apps are several containers at once - web, API, database, cache. Compose declares the whole stack in one file and brings it up with a single command.
Deploying to a VPS (From Zero to Live) How to get your app onto a rented Linux box and reachable on the real internet - from spinning up the server and SSHing in, to running your app as a service that survives crashes and reboots, to a domain, a reverse proxy, and HTTPS.
Load Balancers & Reverse Proxies (nginx) What a reverse proxy actually is, why you put nginx in front of your app, how load balancing spreads traffic across instances, and what nginx really does in production - TLS, gzip, caching, and rate limiting.
Cloud Platforms, Explained (AWS / GCP / Azure) What 'the cloud' actually sells, the handful of building blocks that matter across AWS, GCP, and Azure, and how to stay sane about bills, permissions, and lock-in.
Ship Your Side Project to the Internet The full journey from 'it works on my laptop' to 'a stranger can use it at a real URL' - pick a VPS, SSH in, run it with Docker, point a domain, put it behind Cloudflare, and auto-deploy on merge - with every first-time gotcha flagged.
Backups and Disaster Recovery The 3-2-1 rule, RPO and RTO, and the one practice that matters most: actually testing the restore before the disaster forces you to.
Object Storage (S3) Buckets, keys, and signed URLs - how cloud object storage really works, what it is good and bad at, and the public-bucket leak that makes the news.
Auto-Scaling, Explained Why fixed capacity always loses to real traffic, how auto-scaling decides when to add or remove servers, and the gotchas that catch teams who turn it on and walk away without a load balancer.
Advanced
Kubernetes, Explained Without the Hype What Kubernetes actually does (keeps your declared desired state true across many machines), the handful of objects you really meet - Pod, Deployment, Service, controllers - and a straight answer to whether you need it at all.