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That being stated, Repository pattern is something that can benefit you in the long run. Try to use it only whenever the scenario demands the usage of a Design Pattern. But i strongly advice to not use Design Patterns everywhere. Source : MicrosoftĪdding the Repository has it’s own benefits too. In cases where you want the simplest possible code, you would want to avoid the Repository Pattern. Microsoft themselves recommend using Repository Patterns in complex scenarios to reduce the coupling and provide better Testability of your solutions. The answer to this is also given by Microsoft. So, why do we need to add another layer of abstraction over the Entity Framework Core, which is yet another abstration of Data Access. Microsoft has built the Entity Framework Core using the Repository Pattern and Unit of Work Patterns. This is one of the most debated topics within the. – Uncle Bob ( Robert Cecil Martin )īuilding an Enterprise level ASP.NET Core Application would really need Repository Patterns to keep the codebase future proof for atleast the next 20-25 years (After which, probably the robots would take over ? ). The Architecture should be independent of the Frameworks. EFCore becomes one of your options rather than your only option to access data. Now, you no longer have to depend on EFCore or any other ORM for your application. Repository pattern helps us to achieve this by creating an Abstration over the DataAccess Layer.
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This is solely for performance optimizations. Probably Dapper to fetch the data and EFCore to write the data. There can be also cases where you need to use multiple ORMs in a single solution.
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You could write your data access code within the Repository and call it from multiple Controllers / Libraries. Not very ideal to write this code over and over again, right? Here is the added advantage of Repository Classes. Now what if this set of queries are going to be used in multiple places in the application. Imagine having to write lines of code to just fetch some data from your datastore. Benefits of Repository Pattern Reduces Duplicate Queries Repository pattern is one of the heavily used Design Patterns to build cleaner solutions. This allows you to have a cleaner seperation of concerns. Thus, our application will not care about what kind of ORM we are using, as everything related to the ORM is handled within a repository layer. Repositories are classes that hide the logics required to store or retreive data. What would happen if we didnt have an UnitOfWork Abstraction?Ī Repository pattern is a design pattern that mediates data from and to the Domain and Data Access Layers ( like Entity Framework Core / Dapper).Inheriting and Extending the Generic Repository.Let’s Keep Repositories Away for a Moment.Implementing Repository Pattern in ASP.NET Core 3.1.De-couples the application from the Data Access Layer.