Building the layered server application achieved by InversifyJS

on YouTube ↗29m

" summary

Builds a layered server with TypeScript 3.6, Express and Cloud SQL MySQL and shows how InversifyJS plus a DI container lets the app swap database providers for tests and production without changing business code. Implements a clear layer stack: HTTP router → mediators → repository pattern → reader/writer per relation → DB provider, uses Knex.js for SQL and transaction control, models domain with typed value objects and performs validation in constructors via constructor injection so runtime invariants hold.

AI-written summary · about

" chapters (5)

1. 0:00Introduction to layered server
2. 5:15What is tight coupling
3. 12:12Dependency injection with InversifyJS
4. 19:36Why switch to InversifyJS
5. 27:19Summary and Q&A

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