Hi, Spring fans! It's another exciting week in the wonderful community, and this week I'm writing from awesome Antwerp, Belgium, site of the legendary Devoxx Belgium show. I've been coming here for most years since 2010, and the show is simultaneously new and exciting every year, while also structurally familiar and wonderful. It's awesome to be back. This time around, I'll be talking about Spring Security and Spring Boot 4.x. We've got a lot to get into this week so let's do!

• Spring AI lead Christian Tsolov has a wonderful post on using Spring AI to build modular RAG solutions with TypeSafe Jev
• this is an interesting open-source project to give you visibility into your code's "knowledge graph," called OneLens
• that is, of course, a natural successor to his post from 21 September looking at TypeSafe Jev and Spring AI
• it was a lot of fun being on Spring Office Hours to chat about the future of software
• in last week's A Bootiful Podcast, I was thrilled to be joined by my friend Andres Almiray to chat about JReleaser
• a nice, quick video called Top 5 Spring Boot Best Practices Every Developer Should Know
• this is an interesting Java Spring Boot backend series](https://www.youtube.com/watch?v=gJrjgg1KVL4) from a year ago that has more than 1.1 million views! :D
• this is a nice video introducing how to master Spring AI
• and here's another complete Java and Spring Boot course with Spring AI, RAG, and AI agents