The main difference between `CrudRepository` and `JpaRepository` is that `JpaRepository` is an extension of `CrudRepository` that provides additional JPA-specific features.

While both interfaces provide basic CRUD (Create, Read, Update, Delete) operations, `JpaRepository` offers additional functionality such as query creation methods, pagination support, and the ability to flush changes to the database.

In summary, `CrudRepository` is suitable for generic CRUD operations. At the same time, `JpaRepository` is more feature-rich and designed explicitly for JPA-based applications, providing advanced querying capabilities on top of the basic CRUD operations.

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