Building a Choose-Your-Own-Adventure API with NestJS — Part 2: Persistence

Part 2 of a series building "Grimoire API" — a choose-your-own-adventure backend in NestJS, learned one milestone at a time. Part 1 covered controllers, providers, DI and validation with a single read-only endpoint. This time: making a player's progress survive a server restart. The problem with Part 1 By the end of Part 1, GET /pages/:id worked —...