“As developers, we often react badly when we see duplication. We worry about the extra cost of managing duplicate copies of information, and are even more concerned if this data diverges. But sometimes duplication is the lesser of two evils. Accepting some duplication in data may be a sensible trade-off if it means we avoid introducing coupling.” DuplicationCoupling Book:Monolith to Microservices: Evolutionary Patterns to Transform Your Monolith Source: Monolith to Microservices: Evolutionary Patterns to Transform Your Monolith