LEVEL 15 · ZUDOJS

Course Advanced

ZudoJS architecture

Build the same application as a monolith, a modular monolith and microservices, then build event-driven and full CQRS systems, and compare the trade-offs honestly.

0 of 5 lessons done

Start lesson 1 →

When you finish, you can

  • Build a well-structured ZudoJS monolith
  • Draw and enforce module boundaries
  • Split services and choose RPC, events or queues between them
  • Build idempotent, versioned event handlers
  • Combine commands, queries, events and transactions in one system

You build: One commerce application in three architectures

MODULE 1

Architecture modes

  1. 1A well-structured monolithBuild ShopFlow as one ZudoJS application with auth, users, products, orders, payments and notifications, one database and one deploy, and see where it strains.55 min
  2. 2From monolith to modular monolithSplit a growing monolith into modules with clear boundaries: each owns its data, exposes a small public API, and talks to others via events and commands.45 min
  3. 3MicroservicesWhy teams split into microservices, why not to start there, and how services discover, call each other, stay consistent, survive failures and stay observable.55 min

MODULE 2

Event-driven and CQRS systems

  1. 4Event-driven systemsBuild an OrderCreated flow whose email, audit and analytics handlers survive retries, duplicates, crashes, dead letters and a v1 to v2 payload change.60 min
  2. 5A CQRS systemBuild ShopFlow orders as a full CQRS system: transactional commands with an outbox, a projected read model, typed buses, an HTTP API and one trace end to end.60 min

Course checkpoint

Prove you can move on. The checkpoint picks 20 questions at random from every lesson in this course. Get 16 right to pass. Your result is saved in this browser only.