Infra Operator

Run the services behind the app.

For engineers who run production. Adds the server room: reverse proxies, databases, caches, queues & workers, containers, and orchestration.

Lessons in this path

• The Round Trip — Watch one API call cross the internet and return.
• Clients & Servers — A server is a computer running a listening process.
• Names to Addresses — Turn a name into an address you can reach.
• Ports: Many Doors, One Machine — One machine, many ports — each a different process.
• Anatomy of HTTP — See the moving parts inside one HTTP exchange.
• APIs, JSON & Tokens — Call a real API: token in, JSON out.
• Addresses & Networks — Two addresses, one laptop: private inside, public at the edge.
• Packets & Routing — Follow a packet hop by hop across the internet.
• TCP: The Reliable Pipe — Watch TCP build a reliable pipe from unreliable packets.
• TLS & Certificates — Prove who you're talking to, then encrypt everything.
• Firewalls & Security Groups — Every packet is interrogated at the door.
• Load Balancers — One address, many machines — the balancer decides.
• Web Servers & Reverse Proxies — Meet the process that actually answers the port.
• Databases: Where State Lives — Give your stateless app one place that remembers.
• Caches & CDNs — The fastest query is the one you never make.
• Queues & Workers — Answer the user now; do the slow work later.
• Containers & Images — Ship the whole environment, not just the code.
• Orchestration — Declare the destination; let the orchestrator drive.