Microservices Architecture
Principles and uses
Divide a system into independent services.
Use Independent deployment and failure handling
Separate orders, payments, and stock with their own data stores; business boundaries and data ownership matter more than service count.
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This teaching architecture separates orders, payments, and stock. Independent deployment and scaling add network failures, latency, observability, and versioning costs. Local ACID transactions do not create one global business transaction. Design for duplicates, compensation, event loss, and eventual consistency separately.