The Best Microservices Design Patterns Explained Like You’re Ordering Pizza

The article uses a pizza shop analogy to explain 11 microservices design patterns. It presents each pattern as a way to keep services focused, coordinate requests, isolate failures, manage data, and adapt older systems into microservices.

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• The Single Responsibility Pattern keeps each service focused on one job, like a pepperoni specialist.
• The API Gateway Pattern gives clients one entry point that gathers requests for multiple services.
• The Database per Service Pattern assigns a separate database to each service so data stays isolated.
• The Circuit Breaker Pattern stops requests to a failing or overloaded service and returns a fallback response.
• Event Sourcing stores the history of changes instead of only the latest state, so past actions can be replayed.
• The Saga Pattern coordinates multi-step workflows and uses compensation or retry when a step fails.
• The Strangler Pattern replaces a legacy system gradually, one part at a time, while old and new versions coexist.
• The Bulkhead Pattern isolates parts of the system so one failure does not take down the whole application.
• CQRS separates read logic from write logic, letting each side scale differently.
• The Sidecar Pattern adds helper services beside the main service for tasks like logging, monitoring, caching, or networking.
• The BFF Pattern gives different frontends separate backends tailored to their needs, such as mobile and web.