Everyone's jumping on the microservices bandwagon. But after migrating 3 monoliths, here's what they don't tell you.
😱 The Hidden Costs
1. Debugging is 10x Harder
In microservices you need distributed tracing (Jaeger), centralized logging (ELK), and correlation IDs. That's 3 new systems just to debug.
2. Data Consistency Nightmare
Saga patterns, eventual consistency, compensating transactions - what was a simple DB transaction becomes distributed choreography.
3. DevOps Complexity Explodes
| Monolith | Microservices |
|---|---|
| 1 deployment | 15+ deployments |
| 1 database | 15+ databases |
| Simple CI/CD | Complex pipelines |
4. Team Coordination Overhead
API contract changes: RFC + version negotiation + backward compatibility. 1 PR becomes 2 weeks of meetings.
✅ When Microservices Make Sense
- Team > 50 devs, different scaling needs, independent deployment critical
❌ When to Stay Monolith
- Team < 20, building v1, scale doesn't require it
🎯 The Middle Ground: Modular Monolith
Start monolith -> Modularize -> Extract only what NEEDS to be separate.
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