The Event-Driven Architectural Pattern

A Real-Life Scenario & Problem

Scenario: You maintain an eCommerce system. Whenever a new order is placed, several things must happen in parallel or sequence: inventory is decremented, billing is charged, notifications are sent, analytics is updated. If you code a single “OrderService” orchestrating each step directly (calling InventoryService, BillingService…

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This is an online wiki about the main topics over the last 40 years of software design, architecture & testing. It was created by Khalil Stemmler.

This wiki's mission is to help eliminate the unknown unknowns, helping you get up to speed on the best practices and principles to write testable, flexible, and maintainable code.

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