Containerized Microservices on AWS ECS: Lessons from Production
Transitioning from a monolithic backend to containerized Docker microservices on AWS ECS Fargate with zero downtime.
When scaling a SaaS backend across multi-tenant environments, isolating domain boundaries into containerized services provides predictability and independent scaling.
Key Production Practices
- Multi-Stage Docker Builds: Minimize container attack surface and image size (under 100MB using Node Alpine).
- AWS ECS Fargate Task Definitions: Auto-scale tasks based on CPU and memory thresholds or SQS queue depth.
- Application Load Balancer (ALB) Path Routing: Route traffic seamlessly between auth services, AI ingestion workers, and core API containers.
Rahul
SDE & Team Lead specializing in scalable Node.js microservices, distributed systems, and rapid startup MVP delivery.
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