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Practice Problems

What is Microservices architecture?

App as collection of small services.

Monolithic vs Microservices

Monolithic:

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”‚ Single App β”‚ β”‚ β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”‚ β”‚ β”‚ Users β”‚ β”‚ β”‚ β”‚ Products β”‚ β”‚ β”‚ β”‚ Orders β”‚ β”‚ β”‚ β”‚ Payments β”‚ β”‚ β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ β”‚ β”‚ One Database β”‚ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜

Microservices:

β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” β”‚ User β”‚ β”‚ Product β”‚ β”‚ Order β”‚ β”‚ Service β”‚ β”‚ Service β”‚ β”‚ Service β”‚ β”‚ + DB β”‚ β”‚ + DB β”‚ β”‚ + DB β”‚ β””β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”¬β”€β”€β”€β”€β”€β”˜ β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”΄β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ API Gateway

Benefits

βœ… Independent scaling βœ… Technology flexibility βœ… Fault isolation βœ… Faster deployment

Challenges

❌ Complexity ❌ Distributed data ❌ Network latency ❌ Debugging harder

Short Answer

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