Advanced NestJS is a course that takes NestJS and TypeScript skills on to production-ready APIs, covering TypeORM with MySQL, migrations and transactions, validation, OpenAPI documentation, JWT login with role-based access and automated testing. It suits developers who already know the NestJS basics and teams that run backend systems in TypeScript.
NestJS is a server-side Node.js framework that teams use to build enterprise APIs because of its clear module structure, dependency injection and TypeScript. Once past the basics, though, developers often get stuck on what makes real systems hard: poorly designed database relations that cause slow queries, synchronize left on in production, missing transactions, unsafe login flows and no tests to rely on when code changes. NestJS 12 and TypeORM 1.x have also changed many practices compared with the versions most tutorials use.
This course takes learners from NestJS basics to production-ready APIs with NestJS 12 on Node.js 24 LTS. It starts by connecting MySQL 8.4 with TypeORM 1.x, designing entities and relations, writing advanced queries with QueryBuilder, and handling migrations and transactions. Learners then design RESTful APIs with DTOs and validation using both class-validator and Standard Schema, use interceptors, exception filters and OpenAPI documentation, and build JWT login with guards and roles. They add security, caching and rate limiting, write unit and end-to-end tests with Vitest, and finish by running the application in Docker and building a complete online store API as a capstone. (3 days, 6 hours per day, 18 hours in total, Intermediate level.)
Course Details
This course is the 2026 edition that replaces the previous Advanced NestJS course. It has been rewritten for NestJS 12, Node.js 24 LTS, TypeORM 1.x and MySQL 8.4. It runs for 3 days, 6 hours per day (18 hours in total, 09:00-16:00), as lectures with labs built on a single online store API that grows throughout the course. Intermediate level. It follows on from Basic NestJS, keeps the original core of TypeORM with MySQL, web APIs and JWT, and adds migrations, transactions, Standard Schema validation, OpenAPI, roles and refresh tokens, caching, rate limiting, testing with Vitest and Docker. Microservices are not covered here; they are taught in Building Microservices with NestJS. Learners take home a lab guide, source code for every lab and docker-compose files.
Section 1: Lab: Setting Up a NestJS 12 Project
Section 2: TypeORM 1.x with NestJS
Section 3: Lab: Entities and Relations
Section 4: Advanced Queries
Section 5: Lab: Migrations, Seeding and Transactions
Section 6: Advanced Controllers and Routing
Section 7: Lab: DTOs and Validation
Section 8: Interceptors, Exception Filters and Serialisation
Section 9: API Documentation with OpenAPI
Section 10: Workshop: Online Store RESTful API
Section 11: Lab: JWT Login
Section 12: Authorisation and Refresh Tokens
Section 13: Security and Performance
Section 14: Lab: Unit Tests and End-to-End Tests
Section 15: Workshop: Docker and Capstone
TypeORM is an ORM for TypeScript that lets you define tables as entity classes and read and write data through repositories instead of writing SQL every time. In NestJS, install @nestjs/typeorm with the mysql2 driver, which is the only MySQL driver TypeORM 1.x supports. Configure the connection with TypeOrmModule.forRootAsync and ConfigService, register entities in each module with TypeOrmModule.forFeature and inject repositories into services. Schema changes in production should use migrations rather than synchronize.
One-to-one means a row links to exactly one row in another table, such as a user and a profile, using @OneToOne with @JoinColumn on the side that holds the foreign key. One-to-many and many-to-one are the same relation seen from each side: a category has many products, so the category uses @OneToMany and the product uses @ManyToOne, and the foreign key always sits on the many side. When querying, load only the relations you need to avoid N+1 queries.
Store passwords hashed with bcrypt or Argon2, and write an AuthService that checks the email and password and, if they match, issues an access token with JwtService from @nestjs/jwt. Write an AuthGuard that reads the bearer token from the Authorization header, register it globally and use a @Public() decorator to open only public routes. Then add a RolesGuard for role-based permissions and rotating refresh tokens. If you need several login methods, Passport strategies are an option.
It suits developers who have used NestJS and want to move on to databases, web APIs, login systems and testing as done in real projects, teams updating existing projects to NestJS 12, and teachers, lecturers and computing students. You should be able to create a NestJS project and write modules, controllers and services, write TypeScript and know basic SQL, because the course starts with the database straight away.
You will be able to connect NestJS to MySQL through TypeORM 1.x, design entities and relations, write advanced queries, handle migrations and transactions, design RESTful APIs with DTOs, validation and OpenAPI documentation, build JWT login with guards, roles and refresh tokens, add caching and rate limiting, write unit and end-to-end tests with Vitest and run the application in Docker. Participants who complete the training receive a Certificate of Completion with its own number, which can be verified online.
Yes. It can be run in-house for your team, with examples adapted to your work, such as using the database structure or API your team is building as the exercise, or focusing on upgrading existing projects to NestJS 12. You can request a quotation from this page, or contact us on LINE @itgenius or by phone on 02-570-8449.
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