What are the advantages of having both a delete and a deleteById method in Spring Repository interfaces?

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Having both a delete and a deleteById method in Spring Repository interfaces can provide the following advantages:

1. Flexibility: The delete method can accept a whole entity object as a parameter while the deleteById method can accept an entity id as a parameter. This provides flexibility to choose the appropriate method based on the requirement.

2. Clarity: The existence of both methods makes the code more readable and clear. It is easy to understand what is being deleted based on the method used.

3. Performance: In some cases, deleting an entity by id may be faster than deleting the whole entity. Having both methods allows developers to choose the appropriate method that best suits their performance needs.

4. Consistency: Having both methods ensures consistency in the API design. Developers can expect the same set of methods across all repository interfaces.

5. Error handling: The delete method returns void, while the deleteById method can return a boolean to indicate whether the deletion was successful or not. This allows for better error handling during deletion operations.