Code Best Practices

Factory Pattern

Fits into the functional programming paradigm.
Abstracts the complexity of object creation.

N-Tier Architecture

Used to divide system responsibilities.
- Dependency Injection: We should not depend on concrete classes.
- rewrite library: Simulates the database and returns a stub object.

Abstract Factory

Isomorphic JavaScript.
Dynamic interfaces.
Browser: index.mjs - dynamic factory.

Template Method

The purpose of this pattern is to establish a sequence of methods to be executed, usually within an abstract class.

Example: User Management

Opens and closes connections every time a connection is needed, leading to duplicated code.

Decorator Pattern

Frequently used with NestJS. (U use often)
Enhances code maintainability by adding behavior to existing methods (e.g., used in a history method).
Acts as an interception layer.
agent.js emit the interceptor for httpServer for module
- substitute the way that works
Not change globally the InjectHttoInterceptor

Adapter TODO project

Business case - a service that gonna emit "ticket" for all users (some tickets in banks are emitted differently)
Unique signature (compatible for systems)

(json for mock)

Which pattern choose?

Flyweight - dont substituie technics