I'd like to introduce two new projects that are part of the Spring AI Community GitHub organization: Spring AI Agents, and Spring AI Bench. These two projects focus on using agentic coding tools—tools you likely already have in your enterprise.

In 2025 AI coding agents have matured to the point that they need to be seriously considered for enterprise Java development and general SDLC tasks. CLI Tools like Claude Code, Google’s Gemini CLI, Amazon Q Developer, and OpenAI’s assistants are examples from leading large AI labs, but there are also smaller startups and open-source options. These…

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's a wonderful tuesday here in my home town of San Francisco as I write this from my condo's balcony, fresh off more than three weeks on the road.

By the time we'll speak again in a week, Halloween will have come and gone. Are you all ready for Halloween? What're you gonna dress as? I always go as PHP code. The horror!

The excitement is building for Spring Boot 4 and Spring Framework 7, both of which are scheduled to be released in November of 2025. So fun! There's a ton of good stuff to look at this week, so let's dive…

Large language model API costs can accumulate quickly when applications repeatedly send the same prompt content. A typical scenario: you're building a document analyzer that includes a 3,000-token document in every request. Five questions about that document means processing 15,000 tokens of identical content at full price.

Anthropic's prompt caching addresses this by allowing you to reuse previously processed prompt segments. Spring AI provides comprehensive support through strategic caching patterns that handle cache breakpoint placement and management automatically.

In this blog post, we…

Hi, Spring fans! In this installment we talk to the Spring team engineer Dariusz Jędrzejczyk on the latest-and-greatest in the reactive world, MCP, and more

The Spring Integration for AWS was always an independent Spring Integration extension project with its own plans and release cycles. The consumption of this single jar library has always added a complexity from the dependency management perspective. It depends not only on Spring Integration modules like HTTP and File but directly on Spring Cloud AWS and of course the AWS SDK. Most of the dependencies are optional since this project brings channel adapters and components for different AWS integrations, like S3, SQS, DynamoDB, SNS and Kinesis. Therefore, target projects would suffer not only…

In 2013, it was proposed to add multi-factor authentication into Spring Security. That was the year that “selfie” was added to the English dictionary and “What Does the Fox Say?” was a viral YouTube hit.

Needless to say, one of the biggest features in Spring Security 7 is a long time coming, and is our next stop along our Road to GA.

What is Multi-Factor Authentication (MFA)?

Multi-Factor Authentication is an authentication strategy by which your identity is determined on a website by more than one means of verification, or factor. Common factors fall into one of a few categories:

• Something you know; like a password or an answer to a security question
• Something you have; like an app on your cell phone
• Something you are; like a thumbprint or other biometric
…

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm writing this from the fantastic Vaadin Create conference here in Frankfurt, Germany. What an amazing show and community. Since we last spoke, I have been in Boston; New York city; Sofia, Bulgaria; Krakow, Poland; and now Frankfurt, Germany.

• Spring Framework 7.0.0 RC1 available now
• Spring Session MongoDB is now being led by the MongoDB team
• Spring Session Hazelcast is now being led by the Hazelcast team
• Introducing Share Consumer Support (Kafka Queues) in Spring for Apache Kafka
• Spring Cloud Gateway 4.3.2, 4.2.5, 4.1.12, and 3.1.12 are now available
• Spring Framework 6.2.12 fixes CVE 2025 41254
• in last week's installment of A Bootiful Podcast, I talk to GraalVM founder and Oracle VP Thomas Wuerthinger
• Spring Cloud 2025.1.0 M4 (aka Oakwood) has been released
• Spring Data 2025.1.0 RC1 released
• …

Hi, Spring fans! In this installment I talk to Oracle VP and GraalVM founder Thomas Wuerthinger, recorded at Devoxx 2025!

Continuing our Road to GA series, this week we're exploring Share Groups in Apache Kafka 4.0.0 and their integration in Spring for Apache Kafka 4.0.0 - a feature that fundamentally expands how we can consume messages from Kafka topics.

When we first start working with Kafka, the mental model is straightforward: topics hold messages, consumers read them, and processing happens in order within partitions. This partition-based model has served countless applications well, providing ordered processing with strong guarantees. However, certain use cases involve creating topics with hundreds of…