Library
Hands-on courses and focused lectures on NestJS, React, TypeScript and DevOps. Every lesson has captions, chapters and a transcript.
NestJS Durable Workflows: Business Processes That Survive Crashes
We build an order workflow with NestJS's new durable workflows that charges a card, waits days for a delivery webhook, and refunds itself when things go wrong, all journaled in your own Postgres. Then we kill the server mid-payment and watch it pick up where it left off, charging the customer exactly once.
15 lessons / 3 h 16 min
NestJS Event Sourcing with KurrentDB | Building a Highly Scalable Audit Log System
We treat every state change as an immutable fact by integrating NestJS with EventStoreDB to reconstruct application state through a historical stream. We bridge CQRS patterns with persistent event logs, replacing standard CRUD updates with a high-performance audit trail that guarantees data integrity across distributed microservices without sacrificing architectural scalability or speed.
6 lessons / 2 h 23 min