Hands On System Design Course - Code Everyday

Hands On System Design Course - Code Everyday

Day 131: Distributed Tracing Integration

The Request Journey Mapper

Jan 02, 2026
∙ Paid

Today’s Mission

You’ll implement distributed tracing integration that tracks requests across microservices, enriching your logs with trace context. By lesson’s end, you’ll visualize complete request journeys from frontend to database, identifying bottlenecks and failures instantly.

What We’re Building:

  • Trace ID generation and propagation system

  • Context-aware log enrichment

  • Real-time trace visualization dashboard

  • Cross-service request correlation


The Distributed Debugging Challenge

Picture debugging a failed payment in a microservices architecture. The error could originate in the user service, authentication service, payment gateway, or database layer. Without distributed tracing, you’re hunting through disconnected log files across dozens of services.

Distributed tracing solves this by creating a unique trace ID that follows each request through your entire system. Every log entry, database query, and API call gets tagged with this ID, creating a complete request story.

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