This Week in Spring - February 17th, 2026

Hi, Spring fans! Welcome to another rip-roaring installment of This Week in Spring! It's Lunar New Year or Chinese New Year for billions of people around the world and to those who celebrate, Happy Chinese/Lunar New Year 新年快乐! Or Happy Spring Festival 春节快乐! My favorite kind of festival! In honor ...

This Year in Spring - December 31st, 2024

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...

This Week in Spring - February 6th

Hi, Spring fans! Welcome to another installment of the rip-roarin' adventure that is This Week in Spring! We've got a lot to look at, as usual, so let's dive right into it! in last week's installment of A Bootiful Podcast, I talked to Gunnar Morling, who created the 1BRC 1 Billion Row Challenge...

A Bootiful Podcast: Spring Security legend Laura Spilca joins us to talk Spring Authorization Server and upgrading to Spring Boot 3

Hi, Spring fans! This week, my first as an employee of Broadcom, I am joined by Spring Security community legend Laura Spilca and we talk about all things security, OAuth, and more...

Producer Initiated Transactions in Spring Cloud Stream Kafka Applications

Other parts in this blog series Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications This article is part 2 of the blog series in which we look at transactions in detail with Spring Cloud Stream and Apache Kafka. We saw a general introduction to transactions in the...

This Week in Spring - August 15th, 2023

SpringOne, the first in-person SpringOne since the pandemic! - is next week!! I'm so excited I could spit. And I did spit. And then, I asked ChatGPT for some help writing a poem, and it did not disappoint! T'was a week before SpringOne, in Las Vegas so grand, Where devs from all corners would soo...

My SpringOne 2022

It has taken me an embarrassingly long time to appreciate and understand that the devil is in the details regarding software development. Writing happy-path business logic isnt the hard part! Its the failure cases, observability, resilience, and process. Its security and other so-called...

This Week in Spring - May 26th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Coimbra, Portugal, where I just did my usual shtick on the latest and greatest in Spring Framework 7.x, Spring Boot 4.x, and Spring AI 2.x. It was a ton of fun, and I want to thank everybody who came out. Last week I w...

Anthropic Agent Skills Support in Spring AI

In this blog, we show how using Spring AI, we can integrate with Anthropic's Native Skills API for Cloud-Based Document Generation and Custom Skills. Spring AI adds support for Anthropic's Agent Skills — modular capabilities that let Claude generate actual files rather than text descriptions. Wit...

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...

Introducing Spring AI Amazon Bedrock Nova Integration via Converse API

The Amazon Bedrock Nova models represent a new generation of foundation models supporting a broad range of use cases, from text and image understanding to video-to-text analysis. With the Spring AI Bedrock Converse API integration, developers can seamlessly connect to these advanced Nova models a...

Spring Security Authorization Bypass for Case Sensitive Comparisons

The usage of String.toLowerCase and String.toUpperCase has some Locale dependent exceptions that could potentially result in authorization rules not working properly. Related to CVE-2024-38820...

Apache Kafka’s Exactly-Once Semantics in Spring Cloud Stream Kafka Applications

Other parts in this blog series Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications Part 2: Producer Initiated Transactions in Spring Cloud Stream Kafka Applications Part 3: Synchronizing with External Transaction Managers in Spring Cloud Stream Kafka Applications Part ...

Introducing Experimental Spring Support for Apache Pulsar

We are happy to announce that we are incubating a new experimental Spring project for Apache Pulsar. This project aims to provide Spring-friendly APIs, building blocks, and programming models for writing Java applications that interact with Apache Pulsar. Apache Pulsar is a popular messaging syst...

This Week in Spring - July 14th, 2026

This Week in Spring - July 14th, 2026 In two short months, on this date in September, Java 27 will be here! Who's excited? I'm excited! I'm in delightful Denver, CO, for the amazing UberConf. I just delivered a workshop that was scheduled from 09:00 to 17:00, but it went into overtime, and we jus...

This Week in Spring - June 30th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring , a weekly recap in which we review the latest and greatest in the wide and wonderful world of Spring. You probably already knew this. I don't know if I needed to mention it. But I like to. I've been doing this every week,...

cve-2026-41862 - HIGH - Kryo deserialization of persisted context without class allowlist

cve-2026-41862 - HIGH - Kryo deserialization of persisted context without class allowlist...

Spring Office Hours Podcast: S5E15 - Upgrading Spring and OSS Security

Join Dan Vega and DaShaun Carter for the latest updates from the Spring Ecosystem. In this episode, Dan and DaShaun tackle two challenges every Spring developer faces: keeping applications up to date and staying ahead of security vulnerabilities in open source dependencies. They explore how AI...

Spring Security JdbcOneTimeTokenService allows a one-time token to authenticate multiple sessions

Applications that explicitly configure One-Time Token login with JdbcOneTimeTokenService are vulnerable to a Time-of-check Time-of-use TOCTOU race condition. An attacker with a valid one-time token can send concurrent requests to the authentication endpoint, allowing the single-use token to be...

This Week in Spring - January 20th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's already the 20th of January and we are off on yet another rip roarin' adventure as we look at the week that has been... this week in Spring! even more good stuff from Spring AI team legend Christian Tsolov, this one on...

Evolving Spring Vault: Introducing VaultClient

Back in September 2016, nearly a decade ago now, we introduced Spring Vault as a integration layer for HashiCorp Vault within Spring applications, complemented by Spring Cloud Vault for Spring Boot arrangements. The core idea has always been straightforward: Externalizing secrets to encrypted Vau...

A Bootiful Podcast: Dan Vega on the fundamentals of software engineering

Hi, Spring fans! I'm so excited to chat with fellow Spring developer advocate Dan Vega about his new book, Fundamentals of Software Engineering...

DoS via Spring MVC controller method with byte[] parameter

Spring MVC controller methods with an @RequestBody byte method parameter are vulnerable to a DoS attack...

A Bootiful Podcast: Spring Batch lead Mahmoud Ben Hassine on the latest and greatest in 2023

Hi, Spring fans! Welcome to another installment of A Bootiful Podcast! In this installment, Josh Long @starbuxman talks to Spring Batch lead Mahmoud Ben Hassine @FMBENHASSINE about the latest and greatest in Spring Batch. notes Submit your talk to SpringOne@Explore, being held August 21-24, 2023,...

A Bootiful Podcast: Avalara's Kumaresan Muthaliar on GraphQL in the heavily regulated, data intensive domain of tax

Hi, Spring fans! In this installment Josh Long @starbuxman talks to Kumaresan Muthaliar, senior technical lead at Avalara, about GraphQL in the heavily regulated, data intensive domain of tax...

This Week in Spring - March 29th, 2022

Aloha, Spring fans, from beautiful Maui, Hawaii, where I am with my family on a bit of vacation. Its our daughters Spring break and so were enjoying the family time while we can get it! I wanted to take a brief interlude in between the never-enough time on the beach and all the rum to get this...

CVE-2026-41849

CVE-2026-41849...

A Bootiful Podcast: Neo4j legend Jennifer Reif

Hi, Spring fans! In this installment, I talk to Jennifer Reif, developer advocate at Neo4J, about graph RAG, graph databases, GraphQL, Neo4J, Spring Data Neo4J, and more. neo4j graphRag AI artificialintelligence...

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 ...

This Week in Spring - May 6th, 2025

Hi, Spring fans! As I write this, I'm winging my way to lovely London, UK, for the amazing Devoxx UK event! I'll be looking at the wide and wonderful world of Springdom. Then, from there, it's off to Code Remix in Miami. I'll also be speaking at the Tampa JUG while I'm there, so look out! After...

Spring Tips: Spring Cloud Gateway for Spring MVC

Hi, Spring fans! In this installment, we revisit Spring Cloud Gateway, this time to look at the fantastic new support for Spring MVC, made all the more amazing by Java 21's virtual threads...

Paketo Buildpacks Bionic End Of Support

The Spring Boot plugins for Maven and Gradle provide the ability to build Docker images using Cloud Native Buildpacks. By default, Spring Boot uses the CNB builders provided by the Paketo Buildpacks project. What's Changed The Paketo Buildpacks project has announced that Ubuntu 18.04 Bionic-based...

Spring Tips: go fast with Spring Boot 3.1

Hi, Spring fans! In this installment, Josh Long @coffeesoftware looks at how the new Spring Boot 3.1 release delivers incredible efficiencies for both developers and machines. Java springboot Microservices Testcontainers GraalVM Docker DockerCompose Devtools SSL...

Context Propagation with Project Reactor 3 - Unified Bridging between Reactive and Imperative

This post is a part of a series: 1. The Basics 2. The bumpy road of Spring Cloud Sleuth 3. Unified Bridging between Reactive and Imperative We concluded the last article with the thought that Spring Cloud Sleuth’s MANUAL context propagation strategy is both performant and provides correct...

This Week in Spring - March 14th, 2023

Hi, Spring fans! Happy Pi π day! And, welcome to another installment of This Week in Spring! It's pouring cats and dogs here in San Francisco! The news is talking about atmospheric rivers; I don't know what that means but I don't know that I want to find out. Anyway, all that to say: I'm glad as...

This Week in Spring - January 31st, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm not going to spend too much time here in the preamble because a today's both my birthday and my late father's birthday and b I got the worst gift ever: COVID-19. Sigh. So, I'm going back to bed. Without further ado, let's...

Spring Modulith 0.3 released

Hot on the heels of Spring Boot 3.0.2, I am excited to announce the 0.3 release of Spring Modulith. The release is packed with improvements. We have tweaked a couple of things that might require your attention and a couple of adapting changes to your code. The most notable changes are: GH-114 – W...

This Week in Spring - August 30th, 2022

Hi, Spring fans! How are you? Howre you doin this fine tuesday morning? Im doing well, of course, because this week VMwares tentpole show - VMware Explore - is happening not even a mile from my home, here in San Francisco! And this is just the first one - therell be another show, my favorite show...

A Bootiful Podcast: My friend Francesco Ciulla on developer advocacy and more

Hi Spring fans! In this installment we talk to my friend Francesco Ciulla about the art of developer advocacy and more. Francesco Ciulla is the Head of DevRel Engineering at zerops.io...

A Bootiful Podcast: Java Champion and hilarious friend, Richard Fichtner

Hi, Spring fans! I've been waiting for this episode for so long! Today, we're finally joined by my friend Richard Fichtner, who so took pity on my plight waiting for music to be added to the GraalVM that his company, XDev Software, created the music-maven-plugin, the best Maven plugin, ever! This...

This Week in Spring - January 13th, 2026

Hi, Spring fans, and welcome to another installment of This Week in Spring! It's the 13th of January, 2026, and it's been quite the week indeed! Let's dive right into it! Nobody, and I mean nobody , asked. So I put together a video on how to use Spring WS to build SOAP-based services in 2026. Hey...

This Week in Spring - December 9th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I am in lovely New Jersey, the Garden State , as I write this and I spent most of the last week in New Orleans. It's been a busy week in the Spring community and beyond and so you know what that means? There's a ton of stuff ...

This Week in Spring - May 13th, 2025

Hi, Spring fans! As I write this, I'm at the amazing Code Remix event in Miami well, technically Tampa, Florida. I'll also be speaking at the Tampa JUG while I'm there, so look out! After that, I'll be headed back to Europe—a wee bit further north this time—to Stockholm for the amazing JForum...

This Week in Spring - September 17th, 2024

Hi, Spring fans! Last week I was in scintilliating Seoul, Korea, and then tantalizing Tokyo, Japan, and now I'm in marvelous Mumbai, India, at the airport, actually, headed to New Delhi, India. It's been a busy week for me and even busier a week for the community, so let's dive into it! Java 23 i...

Spring AI - Multimodality - Orbis Sensualium Pictus

Humans process knowledge, simultaneously across multiple modes of data inputs. The way we learn, our experiences are all multimodal. We don't have just vision, just audio and just text. These foundational principles of learning were articulated by the father of modern education John Amos Comenius...

Synchronizing with External Transaction Managers in Spring Cloud Stream Kafka Applications

Other parts in this blog series Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications Part 2: Producer Initiated Transactions in Spring Cloud Stream Kafka Applications In the previous part of this blog series, we saw the basics of transaction management, primarily when...

A Bootiful Podcast: Mark Thomas, Apache Tomcat contributor extraordinaire

Hi, Spring fans! Welcome to another installment of A Bootiful Podcast! In this installment, Josh Long talks to longtime Apache Tomcat contributor extraordinaire Mark Thomas I wrote a free white paper on using Spring Boot 3 AOT and GraalVM. Learn the secrets to working with Spring Boot 3 and Graal...

The new Spring Boot version validation and upgrade support in Spring Tools

New releases of Spring Boot are being released on a quite frequent schedule and updating your projects to newer versions of Spring Boot is something that many teams and organizations around the globe do as part of their daily work. Sometimes those upgrades are simple and easy, for example for new...

This Week in Spring - Happy New Year 2023 edition - December 27th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Its 27 December as I write this and - being honest - I couldnt be happier. Its raining outside. Im in a warm cozy office. Good music is playing. People are asleep in my home. I can hear the raindrops and wind outside the...

Today is the last day to submit to the SpringOne 2022 Call For Papers!

Hi, Spring fans! This year, SpringOne is back in person, and being held in my hometown of San Francisco, California, December 6th-8th. Have you registered? and today June 28th, 2022 is the last day to submit to the Call For Papers! If you have a good idea or story you want to share, submit today!...