From Chaos to Composition: Fixing the Repository Method Explosion in Go

As repositories accumulate feature requests, query methods become unmaintainable monstrosities with sprawling parameter lists. The Specification pattern—rooted in Domain-Driven Design—solves this by promoting predicates to first-class domain objects that compose naturally and remain testable in isolation. Go's generics enable an elegant, type-safe implementation that keeps data access logic clean and domain semantics explicit.