“A class should have only one reason to change.” You’ve heard it. You’ve probably quoted it. Maybe you even tattooed it on your forearm in solid monospaced font. The Single Responsibility Principle (SRP), one of the SOLID five, is a sacred cow in object-oriented design. But maybe — just maybe — it’s time to ask the heretical question: Is SRP always worth following? Let’s dive into why you shouldn't blindly sip the SRP KoolAid. ☁️ The Theory Sounds Lovely SRP tells us: a class should do one thing, and do it well. It’s clean. It’s pure. It gives you a warm feeling of architectural correctness. Your classes become lean little specialists. Your future self will thank you. But theory has a nasty habit of smacking into the chaos of the real world.

May 2, 2025 - 13:43
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“A class should have only one reason to change.”
You’ve heard it. You’ve probably quoted it. Maybe you even tattooed it on your forearm in solid monospaced font. The Single Responsibility Principle (SRP), one of the SOLID five, is a sacred cow in object-oriented design.

But maybe — just maybe — it’s time to ask the heretical question:

Is SRP always worth following?

Let’s dive into why you shouldn't blindly sip the SRP KoolAid.

☁️ The Theory Sounds Lovely

SRP tells us: a class should do one thing, and do it well.

It’s clean. It’s pure. It gives you a warm feeling of architectural correctness. Your classes become lean little specialists. Your future self will thank you.

But theory has a nasty habit of smacking into the chaos of the real world.