Posts about Node.js

• About the Node.js series

  Node.js Feb 7, 2022

  In a series of blog posts, I'm going to describe an opinionated Node.js microservice architecture. Let me tell you about the why, what and how of this series.

  • Node.js
  • TypeScript
  • Express.js

• Organizing Express.js endpoints

  Node.js Feb 9, 2022

  Learn how to organize the endpoints in a TypeScript Express.js service. Why a REST resource should have its own DAO and why you don't need three layers.

  • Node.js
  • TypeScript
  • Express.js

• Testing Express.js endpoints with supertest

  Node.js Feb 11, 2022

  Learn to write Jest unit tests with supertest to test Express.js controllers in a TypeScript Node.js service.

  • Node.js
  • TypeScript
  • Express.js
  • Jest

• OpenAPI input validation in Express.js

  Node.js Feb 16, 2022

  Learn how to validate inputs with an OpenAPI spec in a TypeScript Express.js service. Write tests for the input validation and return meaningful HTTP errors.

  • Node.js
  • Express.js
  • TypeScript
  • OpenAPI

• JSON Logging with Pino in Express.js

  Node.js Mar 10, 2022

  Learn how to add the JSON Pino logger into a TypeScript Express.js service. Log HTTP requests automatically, avoid logging in tests and prettify the JSON logs.

  • Node.js
  • Express.js
  • TypeScript
  • Pino

• Managing configs with TypeScript code in Node.js

  Node.js Mar 21, 2022

  Learn how to build local and production configs within TypeScript code instead of JSON or YAML files. Part 6 of the Node.js microservice architecture series.

  • Node.js
  • TypeScript

• JWT authentication with JWKS in Express.js

  Node.js Apr 2, 2022

  Learn how to implement JWT authentication with JWKS in a TypeScript Express.js service. How to disable auth locally and suppress tokens in production logs.

  • Node.js
  • TypeScript
  • Express.js
  • JWT
  • Pino

• Resolve a list of promises synchronously

  Coding Apr 15, 2022

  Learn how to execute and resolve a list of JavaScript promises synchronously instead of in parallel with Promise.all.

  • Node.js
  • TypeScript
  • JavaScript

• Connecting a Node.js app with a Postgres database

  Node.js Apr 16, 2022

  Learn how to connect a Node.js application both with a local Postgres database in docker-compose and with a production database.

  • Node.js
  • TypeScript
  • Knex
  • Postgres
  • Docker

• Knex.js schema migrations with Postgres in Node.js

  Node.js Apr 20, 2022

  Learn how to use Knex.js schema migrations to create a first Postgres database table. Setup scripts to allow a local database reset.

  • Node.js
  • TypeScript
  • Knex
  • Postgres

• Creating a Node.js DAO with Knex.js

  Node.js Apr 24, 2022

  Learn how to build a DAO in Node.js to execute SQL queries with Knex.js. Providing CRUD operations for a REST entity persisted in the PostgreSQL database.

  • Node.js
  • TypeScript
  • Knex
  • Postgres

• Testing Knex SQL queries with Jest and testcontainers

  Node.js May 20, 2022

  Learn to test your Knex SQL queries with a single automatically spawned Docker Postgres database. Using testcontainers and Jest global setup and teardown.

  • Node.js
  • TypeScript
  • Knex
  • Postgres
  • Testcontainers

• Single schema multi-tenancy in Node.js with Postgres

  Node.js May 21, 2022

  Learn to do multi-tenancy in a single Postgres schema in a TypeScript Node.js app. Avoid performance overhead while minimizing the risk of data exposure.

  • Node.js
  • TypeScript
  • Express.js
  • Knex
  • Postgres
  • JWT

• Organizing and testing HTTP requests

  Node.js May 24, 2022

  Learn to send HTTP requests with Axios in a TypeScript Node.js service. How to mock responses in local development and tests with Jest, mockserver and supertest.

  • Node.js
  • TypeScript
  • Express.js
  • Axios
  • Jest

• Connection pooling with Axios and agentkeepalive

  Node.js May 25, 2022

  Learn to use a connection pool with Axios and agentkeepalive for HTTP requests in a TypeScript Node.js service.

  • Node.js
  • TypeScript
  • Axios

• Pino JSON logging of Axios HTTP requests

  Node.js May 25, 2022

  Learn to configure the Pino JSON logger to automatically log each outgoing Axios HTTP request.

  • Node.js
  • TypeScript
  • Axios
  • Pino

• Axios HTTP error handling in Express.js

  Node.js May 26, 2022

  Don't catch all exceptions! Learn to handle erroneous HTTP responses of Axios with an Express.js handler returning a 500 and logging an error.

  • Node.js
  • TypeScript
  • Express.js
  • Axios
  • Pino

• Axios HTTP request authentication with JWT

  Node.js May 26, 2022

  Learn to authenticate outgoing HTTP requests with Axios interceptors. Retrieving JWT with different scope, caching the JWT and attaching the authorization header.

  • Node.js
  • TypeScript
  • Axios
  • JWT

• Node.js subcommands without CLI library

  Node.js Jun 2, 2022

  Learn to start your Node.js application with different subcommands. Implement a server mode beside commands for batch jobs in the same codebase.

  • Node.js
  • TypeScript

• Building an asynchronous batch job

  Node.js Jun 3, 2022

  Learn to structure an asynchronous batch job in a Node.js application and how to isolate the functionality from the endpoint controllers.

  • Node.js
  • TypeScript
  • Knex
  • Pino

• Building an idempotent cron job with at-least-once delivery

  Node.js Jun 9, 2022

  Learn to build an idempotent at-least-once delivery of notifications in a scheduled Node.js batch job.

  • Node.js
  • TypeScript
  • Knex