Smart Tool Selection: Achieving 34-64% Token Savings with Spring AI's Dynamic Tool Discovery

As AI agents connect to more services—Slack, GitHub, Jira, MCP servers—tool libraries grow rapidly. A typical multi-server setup can easily have 50+ tools consuming 55,000+ tokens before any conversation starts. Worse, tool selection accuracy degrades when models face 30+ similarly-named tools. T...

A Bootiful Podcast: Elastic's developer advocate extraordinairre Philip Krenn on the state of logging

Hi, Spring fans! In this installment, we talk to my friend and Elastic's developer advocate extraordinairre Philip Krenn on the state of logging...

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...

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...

Your First Spring AI 1.0 Application

Your First Spring AI 1.0 Application by Dr. Mark Pollack, Christian Tsolov, and Josh Long Hi, Spring fans! Spring AI is live on the Spring Initializr and everywhere fine bytes might be had. Ask your doctor if AI is right for you! It's an amazing time to be a Java and Spring developer. There's nev...

This Week in Spring - February 11th, 2025

Hi, Spring fans! It's almost Valentine's day, and let me just say: I love the Spring community! It's such an exciting and interesting place to be. Thank you everyone for all that you do. I'm busy preparing for ConFoo, in Montreal, Canada, and for Devnexus, in Atlanta, Georgia. If you're around be...

Bootiful Spring Boot 3.4: Start Here

Hi, Spring fans! And happy Spring Boot 3.4 release to those who celebrate! I know, I know what you're thinking: Josh, Spring Boot 3.4 already shipped! I know it. Spring Boot 3.4 dropped a week earlier this year! In the last couple of years, we’ve released Spring Boot on the same day as Thanksgivi...

Bootiful Spring Boot 3.4: Spring AI

I love Spring AI. It’s an amazing project designed to bring the patterns and practices of AI engineering to the Spring Boot developer. It’s got clean idiomatic abstractions that’ll make any Sring developer feel right at home, and it has a ton of integrations with all manner of different vector...

A Bootiful Podcast: Tagir Valeev, Fellow Java Champion and IntelliJ IDEA Java legend

Hi, Spring fans! In today's installment we talk to Tagir Valeev, a fellow Java Champion and IntelliJ IDEA Java legend. Also: don't forget to try out the just-released Spring Boot 3.3 release!...

Spring Tips: GRPC

Hi, Spring fans! In this installment, we look at how to create GRPC-based services with Spring Boot...

Spring Framework 6.2.0-M1: all the little things

The Spring Framework team has been busy reviewing the issue tracker in anger and reducing the number of opened issues. This was long overdue, with a number of issues being invalid or superseded in the meantime. This helped the team focusing on a more manageable amount of issues and we used the...

A Bootiful Podcast: Google Developer Advocate, Java legend, Alexis Moussine Pouchkine

Hi, Spring fans! Happy Thanksgiving to those who celebrate! Have you tried out Spring Boot 3.2? It comes out NEXT week on the 23rd! Get the bits and try them out now! This week I am joined by Google Developer Advocate, Java legend, Alexis Moussine Pouchkine...

A Bootiful Podcast: Java legend Simon Martinelli on Vaadin, JavaOOQ, and so more

Hi Spring fans! In this installment Josh Long talks to Java legend Simon Martinelli about Vaadin, Spring, JavaOOQ, and more. This episode was recorded live from beautiful Barcelona, Spain at the amazing Spring I/O show!...

Building intelligent Spring Apps with Azure OpenAI

Note from Josh: Hi, Spring fans! I wanted to cross post this article looking at using Spring and Azure OpenAI from Microsoft's Sean Li because it's interesting: enjoy! Integrating cutting-edge artificial intelligence into apps has become a new trend in today's technological landscape. Spring is t...

Docker Compose Support in Spring Boot 3.1

Docker Compose support in Spring Boot 3.1 builds on top of the ConnectionDetails abstraction, which we've featured in a separate blog post. If you haven't already read it, please do so before reading this post. Docker Compose "is a tool for defining and running multi-container Docker applications...

This Week in Spring - June 13th, 2023

This Month in Spring - June 13th, 2023 Hi, Spring fans! Welcome to another installment of This Week in Spring! I am in beautiful Taipei, eating delicious food and meeting amazing people in the sweltering weather. How're you doin'? I've got to join a meeting, so I'll make this quick. One quick thi...

A Bootiful Podcast: Moderne founder Jon Schneider on OpenRewrite, modernizing code bases en masse, freedom and responsibility, and more

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Moderne @moderneinc founder Jon Schneider @jonkschneider on OpenRewrite, modernizing code bases en masse, freedom and responsibility, and more...

A Bootiful Podcast: Google mad scientist Josh Suereth on Observability with OpenTelemetry, building better build tools, and so much more

Hi, Spring fans! In this installment, Josh Long @starbuxman looks at the latest and greatest in Spring Boot 3 AOT, then talks to Googles Josh Suereth @jsuereth about observability with OpenTelemetry, building better build tools, and so much more. Want to learn more about Spring Boot and the wider...

A Bootiful Podcast: big data legend, former Pivot, and friend to the Spring community, Tim Spann

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to big data legend, former Pivot, and friend to the Spring community, Tim Spann @PaaSDev, about big data, StreamNative, and Apache Pulsar, and Spring for Apache Pulsar. Get your notebooks ready for this one, class!...

Spring Authorization Server Is Going 1.0

We are excited to announce that weve started preparing for Spring Authorization Server 1.0 with plans to release the GA version in November 2022. It has been just over two years since we initially announced this new project, and we have come a long way since its initial development. The project h...

A Bootiful Podcast: Spring Cloud and Spring Cloud Kubernetes contributor Ryan Baxter

Hi, Spring fans! In this episode, Josh Long @starbuxman talks to a person who knows more than most about the awesome implications of both the words "Spring" and "Cloud," Spring Cloud Kubernetes lead Ryan Baxter @ryanjbaxter...

A Bootiful Podcast: Java Champion and Spring Katas legend Chandra Guntur

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to fellow Java Champion and Java ecosystem luminary Chandra Guntur @cguntur about Java, Spring, and the Spring Katas, among other things...

CVE-2014-0225

CVE-2014-0225...

cve-2026-40996 - MEDIUM - Inbound WS-Security allows RSA PKCS#1 v1.5 key transport by default

cve-2026-40996 - MEDIUM - Inbound WS-Security allows RSA PKCS1 v1.5 key transport by default...

cve-2026-40985 - MEDIUM - Data Binding Vulnerability in Spring Web Flow with Unified EL Parser

cve-2026-40985 - MEDIUM - Data Binding Vulnerability in Spring Web Flow with Unified EL Parser...

cve-2026-40995 - MEDIUM - X.509 authentication bypasses Spring Security account checks

cve-2026-40995 - MEDIUM - X.509 authentication bypasses Spring Security account checks...

cve-2026-40987 - HIGH - Remote-file synchronizer in Spring Integration writes server-supplied filename under localDirectory without canonicalization

cve-2026-40987 - HIGH - Remote-file synchronizer in Spring Integration writes server-supplied filename under localDirectory without canonicalization...

cve-2026-40994 - HIGH - Wss4jSecurityInterceptor disables WS-I BSP validation by default

cve-2026-40994 - HIGH - Wss4jSecurityInterceptor disables WS-I BSP validation by default...

cve-2026-41696 - MEDIUM - Spring Data MongoDB Bind Parameter Literal Quoting Breakout

cve-2026-41696 - MEDIUM - Spring Data MongoDB Bind Parameter Literal Quoting Breakout...

cve-2026-40993 - HIGH - Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Database Entry

cve-2026-40993 - HIGH - Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Database Entry...

cve-2026-41706 - MEDIUM - Open Redirect When Using CookieRequestCache

cve-2026-41706 - MEDIUM - Open Redirect When Using CookieRequestCache...

cve-2026-41721 - MEDIUM - Spring Data Commons Denial of Service via Data Binding

cve-2026-41721 - MEDIUM - Spring Data Commons Denial of Service via Data Binding...

A Bootiful Podcast: the legendary Adib Saikali

Hi, Spring fans! I'm so thrilled to have been able to sit down and talk to my friend Adib Saikali!...

Default security filter chain has no authorization rule with Actuator but without Health

In certain circumstances, Spring Boot's default web security is ineffective allowing unauthorized access to all endpoints. For an application to be vulnerable, it must: If any of the above does not apply, the application is not vulnerable...

This Week in Spring - March 31st, 2026

Hi, Spring fans! Welcome to another fun edition of This Week in Spring! I'm writing to you from beautiful Amsterdam ahead of the wonderful Voxxed Days Amsterdam event, and I'm really looking forward to it. If you're there, please come say hello! Also, be aware that I'll be speaking at the Paris J...

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...

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 - 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...

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: The legendary Daniel Garnier-Moiroux on security, AI, MCP, and more

Hi, Spring fans! In this installment I talk to the legendary Daniel Garnier-Moiroux on security, AI, MCP, and more, recorded live at Devoxx UK 2025...

A Bootiful Podcast: This Week in Spring (AI) - May 20th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! As I write this, I'm in sunny Stockholm, Sweden for the JForum 123 installment. This is, apparently, the first time the meetup is completely full up since before the pandemic, with more than 150 people in attendance! Tak,...

Spring Security authorization bypass for method security annotations on private methods

Spring Security Aspects may not correctly locate method security annotations on private methods. This can cause an authorization bypass. Your application may be affected by this if the following are true: In that case, the target method may be able to be invoked without proper authorization. You...

A Bootiful Podcast: 'Mr. Apache' Jeff Genender

Hi, Spring fans! In this episode I'm joined by well-known member of the Java community Jeff Genender, whose contributions to Apache over the decades have driven several key projects with which you're no doubt familiar...

Using Spring AI 1.0.0-SNAPSHOT: Important Changes and Updates

Using Spring AI 1.0.0-SNAPSHOT: Important Changes and Updates Spring AI 1.0.0-SNAPSHOT introduces several important changes to artifact IDs, dependency management, and autoconfiguration. This blog post outlines these changes and provides guidance on how to update your projects. The most significa...

A Bootiful Podcast: Spring Legend Glenn Renfro on Devnexus 2025, Cold brews, and More

Hi, Spring fans! In today's installment, I talk to Spring legend Glenn Renfro...

This Week in Spring - February 4th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's February 4th, 2025, as I write this. We are ten days away from Valentine's day, and about a month away from Devnexus. Lots to look forward to, in both the short term and the long term! Let's dive right into this week's...

This Week in Spring - January 7th, 2025

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...

A Bootiful Podcast: Dez Blanchfield, a tech legend for all ages

Hi, Spring fans! Happy happy = new Year2025! It's a new year and a new opportunity! In this episode I talk to my friend and legendary technologist Dez Blanchfield!...

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...

AI Meets Spring Petclinic: Implementing an AI Assistant with Spring AI (Part I)

Introduction In this two-parts blog post, I will discuss the modifications I made to Spring Petclinic to incorporate an AI assistant that allows users to interact with the application using natural language. Introduction to Spring Petclinic Spring Petclinic serves as the primary reference...