The best UUID type for a database Primary Key
Introduction In this article, we are going to see what UUID (Universally Unique Identifier) type works best for a database column that has a Primary Key constraint. While the standard 128-bit random UUID is a very popular choice, you’ll see that this is a terrible fit for a database Primary Key column.
How to use a JVM or database auto-generated UUID identifier with JPA and Hibernate
Introduction In this article, we are going to see how to use a UUID entity identifier that is auto-generated by Hibernate either in the JVM or using database-specific UUID functions. Our Post entity looks as follows: The Post entity has a UUID identifier and a title. Now, let’s see how we can map the Post entity so that the UUID identifier be auto-generated for us.
Hibernate and UUID identifiers
Introduction In this article, we are going to see how the UUID entity attributes are persisted when using JPA and Hibernate, for both assigned and auto-generated identifiers. In my previous post I talked about UUID surrogate keys and the use cases when there are more appropriate than the more common auto-incrementing identifiers. A UUID database type There are several ways to represent a 128-bit UUID, and whenever in doubt I like to resort to Stack Exchange for an expert advice. Because table identifiers are usually indexed, the more compact the database type… Read More
