Prompt Caching Support in Spring AI with Anthropic Claude

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...

A Bootiful Podcast: Spring team engineer Dariusz Jędrzejczyk on the latest-and-greatest in the reactive world, MCP, and more

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...

New Home for Spring Integration AWS

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 modul...

Multi-Factor Authentication in Spring Security 7

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 ...

This Week in Spring - October 21st, 2025

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...

A Bootiful Podcast: Oracle VP and GraalVM founder Thomas Wuerthinger

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

A Bootiful Podcast: Oracle VP and GraalVM founder Thomas Weurthinger

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

Introducing Share Consumer Support (Kafka Queues) in Spring for Apache Kafka

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...

This Week in Spring - October 14th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Boston and New York city and Bulgaria and Poland this week, but I'm still hyped about last week's amazing Devoxx Belgium event! There are a ton of videos to look at, and I'll include just some of them here. So, without...

Spring Session Hazelcast: Now Led by Hazelcast Team

It gives me great pleasure to announce that the Spring Session Hazelcast project will now be led by the Hazelcast Team. NOTE: This announcement is in alignment with our announcement Spring Session MongoDB: Now Led by MongoDB Team. For ten years Spring Session has provided the infrastructure for...

Spring Session MongoDB: Now Led by MongoDB Team

It gives me great pleasure to announce that the Spring Session MongoDB project will now be led by the MongoDB Team. NOTE: This announcement is in alignment with our announcement Spring Session Hazelcast: Now Led by Hazelcast Team. For ten years Spring Session has provided the infrastructure for...

A Bootiful Podcast: Spring Security contributor Josh Cummings on the latest-and-greatest in Spring Security 7

Hi, Spring fans! In this installment we talk to Spring Security contributor and legend Josh Cummings...

Introducing Jackson 3 support in Spring

This is a new blog post in the Road to GA series, this time sharing more details on the new Jackson 3 support, just a few days after Jackson 3.0.0 GA release, about to be introduced in Spring Boot 4 and related Spring portfolio projects. Jackson is by far the most used JSON library on the JVM, an...

This Week in Spring - October 7th, 2025

Hi, Spring fans! How're you doing this fantastic October afternoon? I'm on a train returning from Frankfurt, Germany, where I spoke at the Cloud Foundry Day Frankfurt event about how awesome it is to build an application with Spring Boot and Cloud Foundry. Yesterday I was in Antwerp, Belgium, and...

A Bootiful Podcast: Dr. Kris De Volder on developer tooling for Spring developers and AI

Hi, Spring fans! In this installment we talk to Spring tooling legend Dr. Kris De Volder on tooling, AI, and so much more...

The state of HTTP clients in Spring

This is a new blog post in the Road to GA series, this time exploring the new capabilities of our HTTP clients. This is also a good time to reflect on the state of HTTP clients in Spring, so we will use this opportunity to explain an important announcement: we are officially deprecating...

This Week in Spring: September 30th, 2025

Hi, Spring fans! As I write this I am about to board a flight for Colorado for the amazing Dev2Next conference! I'll be in Antwerp, Beglium for the amazing Devoxx event next week, and I'll be speaking at the Amsterdam JUG with James Ward on the Thursday after that, too! If you're around, be sure ...

Securing MCP Servers with Spring AI

Model Context Protocol, or MCP for short, has taken over the AI world. If you've been following our blog, you've probably read the introduction to the topic, Connect Your AI to Everything: Spring AI's MCP Boot Starters. The security aspects of MCP have been evolving fast, and the latest version o...

A Bootiful Podcast: Spring Batch lead Mahmoud Ben Hassine

Hi, Spring fans! In this installment we talk to the legendary lead of the Spring Batch project, Mahmoud Ben Hassine, about the latest-and-greatest in Spring Batch in the Spring Boot 4 generation...

This Week in Spring - September 23rd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm preparing my talks for several amazing shows including: Commit Your Code conference in Plano, Texas starting tomorrow; Dev2Next in Colorado; Devoxx Belgium in Antwerp, Belgium; and CloudFoundry Days in Germany. So much go...

HTTP Service Client Enhancements

In this 3rd blog post of the Road to GA series that’s highlighting major features within the Spring portfolio for the next major versions to be released in November we’ll have a look at new features for HTTP service clients, which are a collaborative effort across several Spring projects...

A Bootiful Podcast: Spring Cloud lead Spencer Gibb, live from SpringOne 2025

Hi, Spring fans! In this installment, we talk to the legendary lead of Spring Cloud and friend to the community, Spencer Gibb! This was recorded live from Las Vegas, NV, at the fantastic SpringOne 2025 event!...

Connect Your AI to Everything: Spring AI's MCP Boot Starters

The Model Context Protocol MCP standardizes how AI applications interact with external tools and resources. Spring joined the MCP ecosystem early as a key contributor, helping to develop and maintain the official MCP Java SDK that serves as the foundation for Java-based MCP implementations...

This Week in Spring - September 16th, 2025

Hi, Spring fans! Welcome to another extra special installment of This Week in Spring , wherein we celebrate a very auspicious day indeed: the release of Java 25 and GraalVM 25! That's right: an incredible new iteration of the JVM has just dropped and with it come a ton of features! Let's go throu...

API Versioning in Spring

In this 2nd blog post of the Road to GA series highlighting major features within the Spring portfolio for the next major versions to be released in November, I’m going to focus on the upcoming API Versioning support in Spring Framework 7. Introduction API versioning is a challenging topic. Most...

A Bootiful Podcast: Purnima Padmanabhan, General Manager, Tanzu Division, Broadcom

Hi, Spring fans! In this installment, we talk to the general manager of Tanzu, the legendary Purnima Padmanabhan, about AI, the power of the platform, and more. Recorded live from SpringOne 2025!...

Spring Authorization Server moving to Spring Security 7.0

Spring Authorization Server has come a long way since 1.0 was officially released in November 2022. Starting as a project separate from Spring Security, has allowed it to iterate quickly on feature development and ultimately grow a rich feature set for building OAuth2 Authorization Servers. It ha...

Core Spring Resilience Features: @ConcurrencyLimit, @Retryable, and RetryTemplate

This is the first blog post in the Road to GA series, highlighting major features within the Spring portfolio for the next major versions to be released in November of this year. Today we are proud to announce the new resilience features coming in Spring Framework 7.0: concurrency throttling and...

This Week in Spring - September 9th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I am home, ensconced in my studio here in somewhat sunny San Francisco, California, relaxing and trying to catch up on stuff I missed. As always, there's a ton! So let's dive right into it. Some of the amazing features that...

Access API Moves to Spring Security Access

Five years ago, Spring Security began the journey of modernizing its authorization API. This has paved the way for a number of exciting features like Authorized POJOs, value masking, and, planned for Spring Security 7, Multi-Factor Authentication. This also deprecated the majority of the Access...

A Bootiful Podcast: Spring Cloud guru Ryan Baxter

Hi, Spring fans! In this installment we talk to the amazing Spring Cloud contributor Ryan Baxter, live from SpringOne 2025!...

The Road to GA - Introduction

As you all should be aware by now, the Spring portfolio is in the process of driving towards the next major versions to be released in November of this year. This will be only the fourth major generation for Spring Boot and the seventh major generation for Spring Framework in its over 20 year...

This Week in Spring - September 2nd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Frankfurt, awaiting my flight to the Java-tastic Javazone 2025 event where I'll be joined by the legendary James Ward to deliver an AI-focused look at the latest-and-greatest in Spring! And I'm still recovering from th...

A Bootiful Podcast: JobRunr founder Ronald Dehuysser on what's new in version 8

Hi, Spring fans! In this installment, fresh after an exciting and exhausting SpringOne 2025, I am thrilled to have talked with JobRunr founder Ronald Dehuysser on what's new in version 8.0.0. Learn more about JobRunr v8 here!...

This Week in Spring - August 26th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm writing this from the floor of SpringOne, live from lovely Las Vegas! As you can imagine, I've got to get back into it, so we'll make this one a quick one. And if you're here, be sure to say "hi"! In last week's A Bootifu...

A Bootiful Podcast: Andrey Belyaev, product manager for IntelliJ IDEA

Hi, Spring fans! In this installment, we talk to Andrey Belyaev, a Product Manager at JetBrains working on the IntelliJ IDEA product, about the latest-and-greatest support for Spring in Jetbrains IntelliJ IDEA!...

This Week in Spring - August 19th, 2025

Hi, Spring fans! Welcome to another extra special installment of This Week in Spring - special because the next installment will be delivered from the floors of the Ventian where the extraordinairily awesome SpringOne 2025 event will take place! So, some poetry: T’was the Week Before SpringOne...

A Bootiful Podcast: Architecture sage and Spring Modulith lead Oliver Drotbohm

Hi, Spring fans! In this installment I caught up with architecture guru and Spring Modulith founder and lead Oliver Drotbohm and we looked at some of the amazing possibilities in Spring Modulith 2.0, coming after Spring Framework 7.0 and Spring Boot 4.0 drop later this year!...

This Week in Spring - August 12th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's August 5th! Which means we're only a few short weeks away until SpringOne 2025! Have you registered? There's so much to cover this week, so let's dive right into it! I love Spring Modulith and I love JetBrains IntelliJ...

A Bootiful Podcast: Andrew Lombardi, Beginning Spring AI co-author, and friend of the show

Hi, Spring fans! In this installment I am thrilled to talk to my longtime friend Andrew Lombardi about the latest-and-greatest, his new book Beginning Spring AI , and more...

This Week in Spring - August 5th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's August 5th! Which means we're only 20 days away until SpringOne 2025! Have you registered? There's so much to cover this week, so let's dive right into it! Spring Shell 3.4.1 is out! - the new release includes a number o...

A Bootiful Podcast: Spring Security lead Rob Winch on Spring Security 7.0, SpringOne 2025, and more

Hi, Spring fans! In this installment I'm joined by Spring Security lead Rob Winch to discuss the amazing new additions to Spring Security 7.0, coming in November of 2025, and the coverage you can expect when you see our talk at SpringOne 2025 have you registered - https://springone.io ?...

This Week in Spring - July 29th, 2025

It's the end of July! JULY! The seventh month of the year, done and dusted! AHHHHH! I've got memories of being on a tropical beach over the winter holidays, sipping rum and dodging mosquitoes like I was doing a rhythmic gymnastics routine just recently. It turns out that was seven months ago, not...

A Bootiful Podcast: José Paumard, Java developer advocate and professor

Hi, Spring fans! In this installment, recorded at Devoxx UK 2025, I talk to the legendary professor of computer science and legend José Paumard about Java, the ecosystem, and more,...

Spring Data JDBC and R2DBC 4.0 will support Composite IDs

I'm happy to announce, that Spring Data JDBC and R2DBC finally support Composite IDs starting with version 4.0.0-M4. Most of you probably know, but just to make sure everyone has the same understanding: From the database point of view a composite id or composite key is a primary key that consists...

This Week in Spring - July 22nd, 2025

Hi, Spring fans! It's almost SpringOne time!! AAAAH it's all moving so quickly! I can hardly stand it. SpringOne's next month, in lovely Las Vegas, and I'll be there. Will you? Have you registered? We'll be looking at the impending Spring Boot 4.0 and Spring Framework 7.0 releases! It's going to ...

A Bootiful Podcast: Spring legends Tasha Isenberg and Jason Konicki

Hi, Spring fans! In this edition, I had the pleasure of chatting with the brilliant Arjen Poutsma, our go-to API oracle. If you’re curious about his fantastic insights, thoughts, and consultancy services, be sure to check out poutsma-principles.com...

This Week in Spring - July 15th, 2025

Hi, Spring fans! It's already the 15th of July! We're closer to 2026 than we are to 2024. And time's sure flying. Like I will, tomorrow. I'll be flying to Denver for the amazing UBERCONF software show! I'll be doing a workshop and two talks, and if you're there, I hope you'll come say "hi"! Let's...

A Bootiful Podcast: API oracle Arjen Poutsma

Hi, Spring fans! In this edition, I had the pleasure of chatting with the brilliant Arjen Poutsma, our go-to API oracle. If you’re curious about his fantastic insights, thoughts, and consultancy services, be sure to check out poutsma-principles.com...

This Week in Spring - July 8th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I write this having spent a wonderful week in paradise Bora Bora, French Polynesia, to be precise with my partner Tam Mie. We were so very sad to have to say goodbye. But that means I'm officially back at my desk, with nary a...