Microservices vs TDD

The architectural equivalent of a thousand tiny monoliths—great for scaling, terrible for your sanity meets write tests first, cry later—but at least your code won't break in production. Here's our take.

Microservices

Nice Pick

The architectural equivalent of a thousand tiny monoliths—great for scaling, terrible for your sanity.

Pros

• Enables independent scaling and deployment per service
• Improves fault isolation and resilience
• Facilitates polyglot technology stacks
• Easier to understand and modify individual components

Cons

• Introduces complexity in distributed systems and debugging
• Requires robust DevOps and monitoring overhead

TDD

Write tests first, cry later—but at least your code won't break in production.

Pros

• Catches bugs early, saving debugging time later
• Forces cleaner, more modular code design
• Provides a safety net for refactoring
• Reduces regression issues in long-term projects

Cons

• Slows down initial development speed
• Can lead to over-testing trivial code
• Requires discipline that many teams struggle to maintain

The Verdict

These tools serve different purposes. Microservices is a software architecture while TDD is a testing tools & methodologies. We picked Microservices based on overall popularity, but your choice depends on what you're building.

The Bottom Line

Microservices wins

Based on overall popularity. Microservices is more widely used, but TDD excels in its own space.