Podcast Episodes
Back to SearchEpisode 19: Why Your Bank and Instagram Don't Use the Same Database
Mia and Leo compare SQL and NoSQL databases through a filing cabinet with fixed drawers versus flexible labeled bins. Schemas, document stores like M…
1 day, 4 hours ago
Episode 18: How Every App Asks Its Database a Question
Mia and Leo teach SQL — Structured Query Language — through a librarian who follows precise instructions. Select, filter, sort, and join: how apps as…
2 days, 4 hours ago
Episode 17: The Library That Never Forgets
Mia and Leo open the doors on databases — software's long-term memory. Tables, rows, columns, and indexes explained through a library filing system, …
3 days, 4 hours ago
Episode 16: Why a Video From Tokyo Loads Instantly in Dallas
Mia and Leo explain content delivery networks (CDNs) through neighborhood warehouses: edge servers, origin servers, latency, caching at global scale,…
4 days, 4 hours ago
Episode 15: Why Your Apps Keep a Spare Copy of Everything
Mia and Leo explain caching through a kitchen counter versus pantry: browser cache, memory cache, stale data, cache expiration and invalidation, and …
5 days, 4 hours ago
Episode 14: How Websites Remember You When They Have No Memory
Mia and Leo explain cookies, sessions, and logins through a coat-check ticket: how a tiny cookie lets a forgetful website remember you, why logging o…
6 days, 4 hours ago
Episode 13: Every Click You Make Sends a Secret Form
Mia and Leo explain HTTP in plain English through a post-office form: request methods GET, POST, PUT, PATCH and DELETE, response status codes 200, 30…
1 week ago
Episode 12: The Waiter Who Serves a Million Tables at Once
Mia and Leo explain APIs through a restaurant menu: endpoints, requests, parameters, API keys, and responses, with real examples from weather apps, G…
1 week, 1 day ago
Episode 11: The Dining Room and the Kitchen Behind Every App
Mia and Leo explain frontend vs backend through a restaurant: the dining room you see and touch, the kitchen doing the hidden work, and the A P I wai…
1 week, 2 days ago
Episode 10: What Really Happens in the Second Before a Website Appears
Mia and Leo trace the journey from typing a URL to seeing a page — DNS address lookup, HTTP requests, servers, HTML, CSS, JavaScript, and status code…
1 week, 3 days ago