Hands On System Design - Distributed Systems Implementation

Hands On System Design - Distributed Systems Implementation

Day 123: AWS CloudWatch Integration - Pulling Logs from the Cloud

Dec 01, 2025
∙ Paid

What You’re Building Today

You’re creating a CloudWatch log collector that automatically discovers and pulls logs from AWS services—Lambda functions, ECS containers, API Gateway, and more—into your distributed log processing system. By day’s end, you’ll have a production-ready integration handling thousands of log entries per second from multiple AWS accounts.

Today’s Deliverables:

  • AWS CloudWatch client with automatic service discovery

  • Multi-account log streaming with configurable filters

  • Real-time ingestion pipeline with backpressure handling

  • Web dashboard showing CloudWatch metrics and log flow

  • Docker deployment with AWS credentials management


The Cloud Logging Challenge

Companies like Airbnb run thousands of Lambda functions generating millions of log entries daily across multiple AWS accounts. Without proper integration, engineers manually export logs or use AWS Console—neither scales. Your CloudWatch collector solves this by automatically discovering log sources, streaming entries in real-time, and forwarding them to your processing pipeline.

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