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Alper Yuce
12,948 Pointsjdbc:h2:tcp vs. jdbc:h2:mem: what are the differences?
I am doing "Our Todo Project". In this workshop, I am learning user authentication, login page, security... I am in the beginning and checking the codes.
I see that in "application.properties" is like;
======================================
todotoday.entity.package = com.teamtreehouse.todotoday.model
todotoday.db.driver = org.h2.Driver
todotoday.db.url = jdbc:h2:mem:todotoday
hibernate.dialect = org.hibernate.dialect.H2Dialect
hibernate.implicit_naming_strategy = org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl
hibernate.format_sql = true
hibernate.show_sql = true
hibernate.hbm2ddl.auto = create-drop
======================================
Under Details for our datasource we define url as "jdbc:h2:mem:todotoday". Can we use "jdbc:h2:tcp://localhost/~/" . What is the main reason we are choosing "mem" instead of tcp? Is it related regarding user authentication?
2 Answers
Anders Björkland
7,481 PointsHi Alper,
I hope more will jump in and discuss since I am very fresh to this. jdbc:h2:mem is an instruction to run the database in-memory. This means that the database is not going to store any data that you might enter into it once you close it. Why anyone might want something like this would be prototyping or testing (and probably other uses as well). You can read more about it at h2database.
fgiorgosf
Courses Plus Student 21,260 PointsYou can also have alook at the Spring Hibernate Treehouse course which is using h2 on disk.
Alper Yuce
12,948 PointsAlper Yuce
12,948 PointsThank you Anders for your reply. I was wondering whether I can use tcp for user authentication on this project. Do you have any experience or idea about it?
Anders Björkland
7,481 PointsAnders Björkland
7,481 PointsI have no experience yet with that, but it seems like something worthwhile pursuing. I guess some googling, if no one else fills in here, would be something you could do. Maybe page one of the teachers as well?