Spring Boot JPA vs. JDBC: How Much Can a Small App Save?(pvrlabs.xyz)
4 pointsby fksubs6 hours ago1 comment
  • rusanoph6 hours ago
    I expected JDBC to have a smaller memory footprint, but the startup time difference is quite substantial. I noticed the experiment record linked at the bottom. Does it also include the complete source code for both application variants?
    • fksubs5 hours ago
      The article references experiment details https://github.com/PVRLabs/experiments/tree/main/spring-boot..., but I hadn't explored it much.

      What surprised you? I thought the experiment simply demonstrated that there is a noticeable overhead in using JPA with small apps.

    • fksubs5 hours ago
      I think the startup difference comes from classloading costs. It simply takes much longer for Hibernate stuff to load initially.
      • rusanoph5 hours ago
        You're right, I misread the results. But by the way, it seems additional overhead also arises from building entity models in memory and initializing other heavy classes, such as EntityManagerFactory.
        • rusanoph5 hours ago
          Also, thanks for sources!