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Aug 6, 2026 · Fundamentals

Facade Pattern: Simplify Complex Subsystems with a Unified Interface

The article explains how the Facade design pattern hides the intricacies of multiple subsystems—such as inventory, payment, logistics, and notification—behind a single, easy‑to‑use class, illustrating the problem, solution, code examples, relation to the Law of Demeter, real‑world usages, and common pitfalls.