The Spring Blog

News and Events

Spring CredHub 2.0.0.RC1 released

I’m pleased to announce the first release candidate of Spring CredHub 2.0.0, available now in the Spring milestone repository. A GA release of Spring CredHub 2.0.0 will be available in a few weeks.


CredHub provides centralized credential management to the Cloud Foundry platform. CredHub implements an HTTP API to securely store, generate, retrieve, and delete credentials of various types.

Spring CredHub provides a Java binding for the CredHub API, making it easy to integrate Spring applications with CredHub.


How Fast is Spring?

Performance has always been one of the top priorities of the Spring Engineering team, and we are continually monitoring and responding to changes and to feedback. Some fairly intense and precise work has been done recently (in the last 2-3 years) and this article is here to help you to find the results of that work and to learn how to measure and improve performance in your own applications. The headline is that Spring Boot 2.1 and Spring 5.1 have some quite nice optimizations for startup time and heap usage. Here’s a graph made by measuring startup time for heap constrained apps:


This Week in Spring - December 11, 2018

Hi Spring fans and welcome to another installment of This Week in Spring! This week I’ve been in Seattle, WA and now I’m off to Toronto, Canada for the epic SpringOne Tour Toronto edition, the last SpringOne Tour for the year, too! (Can you believe we’re now less than 22 days from 2019? Time sure flies when you’re having fun!)


Reactive Programming and Relational Databases

Imperative code eats threads at the pace of incoming requests while Software is eating the world. This post discusses the assumptions for reactive programming on the JVM and what this means for integrations – in particular, relational databases.

The motivation to come up with a post is the constant increase in reactive programming adoption while some major building blocks are not yet available – in particular, the question: What about relational databases?

What is Reactive Programming

There are a lot of answers about what Reactive Programming is and how this compares to Reactive Systems. I see Reactive Programming as a programming model that facilitates scalability and stability by creating event-driven non-blocking functional pipelines that react to availability and processability of resources. Deferred execution, concurrency and asynchronicity are only a consequence of the underlying programming model.


This Week in Spring - December 5th, 2018

Hi Spring fans and welcome to another installment of This Week in Spring! Today I concluded my brief time in Paris, France, for the epic SpringOne Tour event and I’ll be off to Milan, Italy, in about 12 hours where I’ll be speaking at the Milano JUG Wednesday night. Ci saro presto, Milano!

Tomorrow we’ll have the first installment of season 5 of Spring Tips available so be sure to check this space soon and every Wednesday until we’ve exhausted all 11 episodes!


This Week in Spring - November 27th, 2018

Hi Spring fans! Welcome to another installment of This Week in Spring! This week I’m in Marikesh, Morocco for the epic Devoxx MA talking about all things Spring and cloud with my friends - Google’s Ray Tsang and Microsoft’s Bruno Borges. Then, tomorrow it’s off to Bern and Zurich Switzerland [for the local JUGs there. Tonight, in about 15 minutes, I’m doing a live training on Safari - “Bootiful Kotlin,” too.

As usual, we’ve got a ton of things to cover so let’s get to it!


This Week in Spring - November 20th, 2018

Hi Spring fans! How’s things? I’m in Taipei, Taiwan, where I’ve presented at the local JUG and at the Cloud Native Forum. It’s been a crazy good time on the ground eating delicious “stinky tofu” (that’s its name!), trying to figure out the difference between traditional Chinese characters and so-called simplified Chinese characters used in China, and of course making tons of new friends.

In less than 24h I’ll be on a plane winging my way back west where I’ll join my family, and our newest addition, and our friends, and we’ll celebrate the Thanksgiving holiday together. It’s this time of year when I try to take stock of all the things for which I’m grateful and you know what, dear reader? Time and time again, I think of you, the community that makes Spring the best place to integrate and innovate. I am thankful for you. I’m sure I speak for the Spring team and Pivotal at large when I say, we are thankful for you.


Spring Cloud Stream Fishtown.RC2 /2.1.0.RC2 Release Announcement

We are pleased to announce the second Release Candidate of the Spring Cloud Stream Fishtown release train - Fishtown.RC2/2.1.0.RC2.

Spring Cloud Stream Fishtown 2.1.0.RC2 is available for use in the Spring Milestone repository.

As a follow up to 2.0.0.RC2, this release primarily encompasses minor enhancements and bug fixes.
As it stands now this should be the final Release Candidate before General Availability release 2.0.0.RELEASE in several weeks.

If the applications are created from Spring Initializr, they need to add this BOM snippet in maven dependency management before the spring-cloud BOM declaration, otherwise you’ll end up with the latest snapshot: