Difference between save vs persist methods in Hibernate

Whenever we are using ORM like Hibernate, there are two from many others methods save() and persist() using to save object to database. But these two methods have the differences in functionality. And also difference between hibernate save() and persist() methods is depends on generator class we are using. There are following few differences as below.

1. Suppose we are using generator class to assign the primary key to persisting object, then there is no difference between these two methods because in generate class programmer we need to give the primary key value to save in the database.

2. persist() is supported by JPA, while save() is only supported by Hibernate.
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3. Main difference between save and persist is there return type. save () method return Serializable object but persist() method return void.

Serializable pk = session.save(object);

4. Another difference between save and persist method in Hibernate is behavior on outside of transaction boundaries. There is no boundary of transaction for save() method because it returns an identifier so that an insert query is executed immediately to get the identifier. But persist() method will not execute an insert query if it is called outside of transaction boundaries.

5. Another difference between persist and save is that both methods make a transient object to persistent state. However, persist() method doesn’t guarantee that the identifier value will be assigned to the persistent state immediately, the assignment might happen at flush time.

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Dinesh Rajput

Dinesh Rajput is the chief editor of a website Dineshonjava, a technical blog dedicated to the Spring and Java technologies. It has a series of articles related to Java technologies. Dinesh has been a Spring enthusiast since 2008 and is a Pivotal Certified Spring Professional, an author of a book Spring 5 Design Pattern, and a blogger. He has more than 10 years of experience with different aspects of Spring and Java design and development. His core expertise lies in the latest version of Spring Framework, Spring Boot, Spring Security, creating REST APIs, Microservice Architecture, Reactive Pattern, Spring AOP, Design Patterns, Struts, Hibernate, Web Services, Spring Batch, Cassandra, MongoDB, and Web Application Design and Architecture. He is currently working as a technology manager at a leading product and web development company. He worked as a developer and tech lead at the Bennett, Coleman & Co. Ltd and was the first developer in his previous company, Paytm. Dinesh is passionate about the latest Java technologies and loves to write technical blogs related to it. He is a very active member of the Java and Spring community on different forums. When it comes to the Spring Framework and Java, Dinesh tops the list!

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