Hi, Spring fans, and happy new year! It's been another super seven days since we last spoke and, as always, there's a lot to cover so let's dive right into it!

• A long time in coming, but it's finally here! Hello DCO, Goodbye CLA: Simplifying Contributions to Spring
• the Spring AI hits just keep on coming! Spring AI MCP 0.4.0 (Milestone) Released
• In last week's installment of A Bootiful Podcast, I talk to legendary technologist Dez Blanchfield
• Our very own Michelle Sebek has a nice blog on letting Tanzu, a cloud platform from Broadcom, the company where a good many of the Spring teanm work, do the heavy lifting
• Dhaval Shah has a nice blog looking at virtual threads in Java
• I am a big fan of workflow engines and of Cornelia Davis and of Spring Boot, …

The Spring team will be rolling out a simplified contribution process that replaces the requirement to sign a Contributor License Agreement (CLA) with a Developer Certificate of Origin (DCO). The process will start this week with Spring Framework, Spring Security, & Spring Boot and then roll out to the entire Spring portfolio.

History

Spring has long used a permissive Contributor License Agreement (CLA) in order to provide legal protections to the Spring project, users, and the Spring team. Long time contributors may remember that signing the CLA originally involved emailing a signed PDF of…

We're pleased to announce Spring AI MCP 0.4.0 milestone release.

Repository Configuration

Add this Spring milestone repository to your POM:

<repositories>
  <repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/libs-milestone-local</url>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
</repositories>

Major Features

Reference documentation: https://docs.spring.io/spring-ai-mcp/reference/overview.html

Enhanced Roots Management

• Implemented proper ListRootsResult wrapping in async client
• Added listRoots methods in server components
• Implemented roots change notification handling in async server
• Added roots integration tests including async notifications
• Added support for roots change notification with single and multiple consumers
• Improved robustness of root addition/removal scenarios
…

Hi, Spring fans! Happy happy = new Year(2025)! It's a new year and a new opportunity! In this episode I talk to my friend and legendary technologist Dez Blanchfield!

Hi Spring fans! Happy New Year! And welcome to another installment of This Year in Spring!

The year that was...

I write this edition from a desk overlooking the beautiful jungle of Martinique, a beautiful island nation in the French Caribbean. I’m sipping some rhum martinique, enjoying the semi-sweltering heat, and thinking about the year that's been 2024. Every year at this time, since 2011, I write this year in spring, an abbreviated look at the year from the rearview mirror.

So many amazing things happened this year. It’s sort of difficult to put my finger on any one thing. But, I shall try…

We're pleased to announce Spring AI MCP 0.2.0 milestone release.

Repository Configuration

Add this Spring milestone repository to your POM:

<repositories>
  <repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/libs-milestone-local</url>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
</repositories>

Major Features

MCP Server Enhancements

• Introduced new McpServer factory with builder pattern for flexible configuration
• Added McpAsyncServer with non-blocking operations and reactive support
• Implemented McpSyncServer as synchronous wrapper around async implementation
• Added runtime tool management capabilities
• Introduced server capabilities and implementation information support
…

Hi, Spring fans! (and happy holidays!) in this installment I talk to Intact's Luke Shannon about their use of Spring, developer portals, and so much more.

We are happy to announce the 1.0.0 Milestone 5 release of Spring AI

As usual, this release has had several new features and bug fixes, however we have put a focus on reviewing the code base from a design perspective with the aim to go GA in early 2025. While we have tried to make this transition smooth, by deprecating methods and classes for one release cycle, there are some breaking changes we know about and perhaps some that we don’t, so please bear with us. See the section on Breaking Changes below.

New Features

Model Context Protocol (MCP) Support - Incubating

MCP is a game-changer for…

We're pleased to announce Spring AI MCP 0.2.0 milestone release.

Repository Configuration

Add this Spring milestone repository to your POM:

<repositories>
  <repository>
    <id>spring-milestones</id>
    <name>Spring Milestones</name>
    <url>https://repo.spring.io/libs-milestone-local</url>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
</repositories>

Breaking Changes

• Module restructuring (see the Module Names Updated section below)
• Renamed StdioServerTransport to StdioClientTransport

Key Features

API Updates

• Simplified McpClient listing operations (no cursor parameter needed)
• Added McpClient.Builder support.
…