#systemdesign

Here’s the exact mistake most people make 👇

👉 Layer 4 Load Balancer
- Routes using IP + Port
- Cannot see request data
- So it treats ALL traffic the same

Example:
/login, /payments, /search → all look identical

→ No control over routing

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👉 Layer 7 Load Balancer
- Can read URL, headers, cookies
- Can route based on request

Example:
/login → auth service
/payments → billing service

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⚠️ Why this matters:

If you only use Layer 4:
→ You can’t properly split microservices

If you only use Layer 7:
→ You add unnecessary latency

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🔥 What actually works in production:

Layer 4 → handles traffic fast
Layer 7 → routes intelligently

This is how scalable systems are designed #softwarearchitect #softwareengineering #devopsengineering #coding #money #tech

Видео #systemdesign канала Amit Vikram Awasthi