Grokking Node.js Design Patterns for Interviews

Solution: Create a Feature-Flagged Analytics Service

Understand how to implement a factory that produces either a real or stub analytics service based on feature flags, ensuring safe method calls regardless of analytics availability.

We'll cover the following...

Solution explanation
Revisit the problem statement

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

Solution: Create a Feature-Flagged Analytics Service

Solution explanation