Design pattern is a manner to implement structure and properties for stop every day problem of programming.
Design patterns represent the best practices used by experienced object-oriented software developers. Design patterns are solutions to general problems that software developers faced during software development. These solutions were obtained by trial and error by numerous software developers over quite a substantial period of time.
Design Pattern is the way to solving the defined Problem. Creation Design pattern represents for creating the objects like singleton,factory,abstract factory,structure design pattern drive the structure of the project like facade and behavior design pattern represents the behaviour of objects like state,strategy
Design patterns is tested and reusuable solution to general problems occurs in software Development.
Design patterns are nothing it is repeatable solution to reduce software problems.
Design patterns is solution architecture of any project. How data will flow and methods interact to each other. ExampleData Model Repository Entities Model View Model Controller ModelThese model are separate project in single project.
Design patterns are design level solutions for recurring problems that software engineers come across often. It’s not code but it is a description on how to tackle these problems and design a solution.
Using these patterns is considered good practice, as the design of the solution is quite tried and tested, resulting in higher readability of the final code.
There are about 26 Patterns currently discovered. You can check this for more details
https://www.freecodecamp.org/news/the-basic-design-patterns-all-developers-need-to-know/
The Singleton Pattern - Ensures that only 1 instance of an object exists in memory.The Object Factory Pattern - Allows creation of objects thru the use of interfaces.