Memento | Behavioural Design Pattern | Intent, Examples, UML, Code & Trade-Offs

In this video, we dive deep into the Memento Pattern, a behavioral design pattern that allows you to capture and restore the state of an object without violating encapsulation.

What you'll learn:
Intent: Understand how the Memento Pattern helps save and restore the state of objects to their previous states.
Real-World Use Cases:
Editors: Undo/redo functionality in text or graphic editors.
Forms: Save intermediate states while filling forms.
Games: Save game progress for reloads.
Databases: Manage transaction logs for rollback and recovery.
Visualizing with Diagrams:
Sequence Diagram: Follow the interaction flow between the Originator, Memento, and Caretaker.
Class Diagram: Explore the relationships among the Originator, Memento, and Caretaker.
Code Walkthrough: Implementation of a Simple Document Editor with a Memento class for saving and restoring document states.
Trade-Offs:
Strengths: Enables undo/redo functionality, preserves encapsulation, and simplifies state management.
Weaknesses: Can increase memory usage due to multiple saved states and complicates management of large states.

Resources:
UML Diagrams: https://drive.google.com/drive/folders/1kz8foFDOXaZKUyyKNO3jLOIjkJ2NgG13?usp=sharing

Code Repository: https://github.com/udaykirankavaturu/design-patterns

#coding #DesignPatterns #LowLevelDesign #SoftwareEngineering #OOD #UdayKiranTech #MediatorPattern
Video Chapters:
00:00 intro
00:18 intent and examples
02:19 UML diagrams
06:35 code
10:05 trade offs
11:17 summary and thank you

Видео Memento | Behavioural Design Pattern | Intent, Examples, UML, Code & Trade-Offs канала udaykiran․tech