Scaling Node.js Apps with Redis Cluster
When your application outgrows a single Redis instance, clustering becomes essential. In this post we walk through setting up a Redis cluster for a Node.js backend using ioredis, handling failover and consistent hashing. We also discuss common pitfalls and monitoring strategies.
A Practical Guide to GraphQL Subscriptions
GraphQL subscriptions enable real-time updates in your application. We explore implementing subscriptions with Apollo Server and WebSockets, comparing them to REST polling and Server-Sent Events. Examples include a live chat and a collaborative editing demo.
Testing Docker Containers with Testcontainers
Testcontainers provides disposable Docker containers for integration tests. We demonstrate how to spin up PostgreSQL and RabbitMQ instances in your Node.js test suite using Jest, ensuring clean state and fast teardown. Performance tips and network isolation are also covered.