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...

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 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...

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 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...

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...

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 - 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...

CVE-2026-41849

CVE-2026-41849...

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

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

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 - 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...

Bootiful Spring Boot 3.4: Spring Boot

And now we’re back where we started: Spring Boot 3.4! This release is what pulls everything together. When you look at Spring Boot, remember that it normalizes the integration of all the projects it assembles and tries, wherever possible, to smooth out whatever integration issues might arise from...

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...

A Use Case for Transactions: Outbox Pattern Strategies in Spring Cloud Stream Kafka Binder

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 ...

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...

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...

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...

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!...

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...

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,...

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: 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 - 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 - 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 - June 10th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's been a busy week indeed since we last spoke! Last week I was in Amsterdam for the IntelliJ IDEA conference and for the JSpring event in Utrecht. Now, I'm in Tokyo, Japan, for the JJUG Spring 2025 event. Importantly: both...

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...

This Week in Spring - October 15th, 2024

Hi, Spring fans! Welcome to another rip-roaring and ever-so-riveting installment of This Week in Spring! I'm in Amsterdam, at the moment, rounding out a week between Antwerp, Beglium, and Amsterdam, the Netherlands. Today I'm off to Dubai for the fantastic GITEX/DevSlam event. Then I return back ...

This Week in Spring - July 29th, 2024

Hi Spring fans! Welcome to another installment of This Week in Spring! It's July 29th, 2024! I can hardly believe it! We're less than a month away from SpringOne 2024! Have you registered for either in-person attendance or the free livestreams yet? As always, we've got a ton of stuff to cover so...

What new is coming in reactor-core 3.6.0?

Reactor 3.6.0 is coming and going to be GA on November 14. This blogpost describes new features that are included in this upcoming release! Virtual Threads support Today, everyone talks about Java 21 and Project Loom. The Project Reactor team hears that and sees value in that project within our...

A Bootiful Podcast: Java Champion, legendary engineer, and teacher Trisha Gee

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Java Champion, legendary engineer, and teacher Trisha Gee @trishagee bout her extraordinary career working at organizations like LMAX, MongoDB, Jetbrains, and her new books, Heads First Java, and Getting to Know IntelliJ IDEA...

This Week in Spring - April 12th, 2022 (Devnexus 2022 Edition!!)

This Week in Spring - Devnexus Edition Hi, Spring fans! Welcome to another installment of This Week in Spring - Im at my first in-person event since the virus: Devnexus! WOOHOOO!! Well, technically Im still in San Francisco as I write this, but Ill be in Atlanta, GA tomorrow for… Devnexus! I hope...

cve-2026-40999 - HIGH - Spring WS SSRF via unvalidated WS-Addressing reply destinations

cve-2026-40999 - HIGH - Spring WS SSRF via unvalidated WS-Addressing reply destinations...

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...

This Week in Spring - Spring Boot 4 edition! - November 25th, 2025

Hi, Spring fans! Welcome to another illustrious installment of This Week in Spring! It’s Thanksgiving week here in the United States. Thanksgiving is traditionally celebrated with friends and family every fourth Thursday of November, gathered around a table full of food and, usually, a giant...

This Week in Spring - November 4th, 2025

Hi, Spring fans! Welcome to another all-out installment of This Week in Spring wherein we attempt to recap all that's new and novel in the wild, wacky, and wonderful world of Springdom. And this week, I'm doing so from an airport in Switzerland, en route to Malmo, Sweden, for the amazing Oredev...

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...

A Bootiful Podcast: Spring Boot cofounders Phil Webb and Dr. David Syer on the occasion of the 10th Anniversary of Spring Boot 1.0

Hi, Spring fans! In this installment I talk to cofounders Phil Webb and Dr. David Syer, on the occassion of the 10th Anniversary of Spring Boot...

Spring Tips: Spring Boot 3.2

Hi, Spring fans! In this installment of Spring Tips, I look at the new Spring Boot 3.2 release, due to drop today, the 23rd of November 2023! 23-11-23! We're diving into the cool new features of Spring Boot 3.2 and Java 21. We'll explore how virtual threads from Project Loom make your code run...

This Week in Spring - September 12th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you this fine 12th of September? I'm doing alright, elated, even. I've just returned from beautiful Oslo, Norway, and I've got a busy 30 days or so ahead, starting today. I'm visiting Seattle, WA; Mexico City, Mexico;...

This Week in Spring - September 5th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you? I just got back from another fabulous labor day weekend, and am headed to Oslo, Norway, for the fabulous JavaZone 2023 event. This will be my first time returning to lovely Oslo, Norway, since the pandemic! I can...

This Week in Spring - June 27th, 2023

Hi Spring fans! Welcome to another installment of This Week in Spring! This week I am in Seoul talking to developers about the latest-and-greatest in Spring Boot 3! There's so much great stuff coming, and so much great stuff already. There are a few things I'm super excited about. First, yesterda...

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...

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...

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...