Hands On System Design - Distributed Systems Implementation

Hands On System Design - Distributed Systems Implementation

Day 162: Log-based Network Traffic Analysis

May 06, 2026
∙ Paid

What We’re Building Today

You’ll implement a real-time network security monitoring system that analyzes log data to detect threats, map traffic patterns, and identify anomalies. Think of how Cloudflare monitors billions of requests to block DDoS attacks, or how Netflix tracks traffic patterns to detect account sharing—we’re building that intelligence layer.

Today’s Goals:

  • Parse network logs (firewall, proxy, packet captures) in real-time

  • Detect suspicious patterns (port scans, data exfiltration, brute force)

  • Visualize traffic flows with threat scoring

  • Generate actionable security alerts

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