Grokking Node.js Design Patterns for Interviews/

...

Hybrid Service Adapter for Fallback APIs

Create an adapter that wraps two APIs (primary and fallback) and automatically retries the fallback if the primary fails—all under a single consistent interface.

We'll cover the following...

1.Introduction to Node.js Patterns

2.Factory Pattern: Generate Config-Driven Services Dynamically

3.Builder Pattern: Assemble Complex Objects with Fluent APIs

4.Decorator Pattern: Extend Behavior Without Modifying Core Logic

5.Adapter Pattern: Standardize Interface Across Dependencies

6.Proxy Pattern: Intercept and Control Access Transparently

7.Strategy Pattern: Swap Algorithms Based on Context

8.Wrapping Up

Hybrid Service Adapter for Fallback APIs

Problem statement