Building Scalable Node.js & Microservices Architecture

Building backend services that handle tens of thousands of concurrent requests requires clean separation of concerns, asynchronous job processing, and robust error handling.

Microservices Best Practices - Decoupled Event Architecture: Use RabbitMQ or Apache Kafka to handle event-driven communication between services. - REST & gRPC Dual Transport: Expose clean REST endpoints for public client web apps while utilizing high-performance gRPC for internal inter-service communication. - Centralized Telemetry: Monitor response latencies and error rates using OpenTelemetry and Grafana dashboards.