Major Migrations Made Easy

on YouTube ↗51m

" summary

Demonstrates migrating a Spring Boot 2.0 Java 8 branch to Spring Boot 3.1 on Java 17 using OpenRewrite recipes and the web platform, running the same fine‑grained transformers across ~35,000 open‑source repos; migrations are implemented as Java visitors against a lossless semantic tree so changes are minimal and type‑safe. Shows automated fixes for JUnit4→JUnit5, Log4j→Logback, Sonar/Checkstyle issues, and claims campaigns that netted about 200 hours saved in minutes of run time.

AI-written summary · about

" chapters (9)

1. 0:00Start
2. 3:43Types of migrations
3. 20:44Growing ecosystem of modernization recipes
4. 21:17100% accurate, style-preserving transformation because of a new code representation
5. 24:53JUnit 5 recipe
6. 26:40Running recipes
7. 27:31OpenRewrite use cases
8. 30:09Refaster templates
9. 42:41Moderne

" related talks

• 45mMajor migrations made easyTim te Beek · Spring I/O 2022
• 17mMajor migrations made easyTim te Beek · Voxxed Days Zurich 2023
• 15mMajor migrations made easyTim te Beek · Voxxed Days Luxembourg 2022
• 13mMajor migrations made easyTim te Beek · Devoxx France 2022
• 01h 04mMind the Gap: Jumping from Spring Boot 2.x to 3.xPhil Webb · SpringOne at VMware Explore 2023 Las Vegas
• 13mModernize your money-makerTim te Beek · J-Fall 2023
• 43mAutomate Code Changes - Bringing OpenRewrite to the IDEMartin Lippert · EclipseCon 2023
• 55mFrom Spring Boot 2 to Spring Boot 3 with Java 21 and Jakarta EEIvar Grimstad · Voxxed Days Bucharest 2024