How many GoF patterns are there?

The Repository Design Pattern is one of the most popular design patterns to achieve such separation between the actual database, queries, and other data access logic from the rest of the application.

There are 11 behavioral design patterns defined in the GoF design patterns. used to create a template method stub and defer some of the steps of implementation to the subclasses. used to provide a centralized communication medium between different objects in a system.

In software development, a pattern (or design pattern) is a written document that describes a general solution to a design problem that recurs repeatedly in many projects . Software designers adapt the pattern solution to their specific project.

The Repository pattern. Repositories are classes or components that encapsulate the logic required to access data sources . They centralize common data access functionality, providing better maintainability and decoupling the infrastructure or technology used to access databases from the domain model layer.15 Eyl 2021