A Bootiful Podcast: Spring Integration lead Artem Bilan on the latest in Spring Integration 6

Engineering | Josh Long | March 30, 2023 | ...

Hi, Spring fans! In this installment Josh Long (@starbuxman) talks to Spring Integration lead Artem Bilan (@artem_bilan) about the latest and greatest in Spring Integration. Spring Integration makes it easier to connect an increasingly larger ecosystem of disparate services and systems.


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

Engineering | Dariusz Jędrzejczyk | March 30, 2023 | ...

We concluded the last article with the thought that Spring Cloud Sleuth’s MANUAL context propagation strategy is both performant and provides correct semantics. Out of many experiences, the Spring, Micrometer, and Reactor teams created a new context-propagation library. Its goal is to encapsulate the concern of transporting contextual data between ThreadLocal values and Map-like structures. Both Micrometer 1.10 and Reactor 3.5 build on top of it to provide a first-class experience between Reactor and imperative code. By using Reactor Context, we implicitly expose ThreadLocal values that are…

Context Propagation with Project Reactor 2 - The bumpy road of Spring Cloud Sleuth

Engineering | Dariusz Jędrzejczyk | March 29, 2023 | ...

Spring Cloud Sleuth recently became Micrometer Tracing, part of the Micrometer project. Most of the tracing instrumentation is centered within Micrometer under the new Observability API. The goal of these projects is to enable observability of any application – in the form of metrics, tracing, and logs that contain correlation identifiers. To achieve this goal, libraries require a way to transport contextual information. When applications deal with asynchrony in any form, that task becomes quite a challenge. In the previous article, we went through the basics of context propagation with

This Week in Spring - March 28th, 202

Engineering | Josh Long | March 28, 2023 | ...

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm reporting to you from Los Angeles, where my family and I have gone for my daughter's spring break. We're going to survey some prospective colleges and we're going to Disneyland. Needless to say, I'm doubly glad to have all this cool stuff to read this week; I can really savor each article! Let's dive in!

Context Propagation with Project Reactor 1 - The Basics

Engineering | Dariusz Jędrzejczyk | March 28, 2023 | ...

Spring Boot 3 and Spring Framework 6 brought us a unified and consistent way to enable Observability in applications that use Micrometer. The evolution from Spring Cloud Sleuth to Micrometer, along with the Observation API and Micrometer Tracing, made us consolidate various approaches to context propagation. In this blog post series, we aim to explain how we came to support context propagation in Project Reactor to meet the needs of imperative libraries. By building your understanding from the ground up, you will be able to use these constructs and understand what’s happening underneath. We…

A Bootiful Podcast: Mark Thomas, Apache Tomcat contributor extraordinaire

Engineering | Josh Long | March 23, 2023 | ...

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

Start from zero and scale to zero – Azure Spring Apps consumption plan

Engineering | Josh Long | March 22, 2023 | ...

We are launching a new way to pay for Azure Spring Apps -- the consumption pricing plan. This plan is now in public preview so you can start creating and deploying apps today. This new plan is super-efficient because you can start from zero and scale to zero vCPU. You get more straightforward pricing across your containerized applications since it costs the same as Azure Container Apps, but with added value for Spring apps.

How does this work? With the new plan, you can deploy apps that don’t need to run all the time or apps that have bursts of traffic and only pay for the resources used…

This Week in Spring - March 21st, 2023

Engineering | Josh Long | March 21, 2023 | ...

Hi, Spring fans! Welcome to another rip roaring installment of This Week in Spring! It's March 21st and today they announced Java 20! It's an exciting time to be a Java developer. Java 20, of course, is just another amazing installment before Java 21, which comes out in six short months, including Project Loom. And, of course, Spring Framework looks set to provide integrations with it in Spring Framework 6.1. It's an amazing time to be a Java and Spring Boot developer!

Spring Data JPA introduces query parser!

Engineering | Greg L. Turnquist | March 21, 2023 | ...

The Problem

One of Spring Data JPA’s handy features is letting you plugin in custom JPA queries through its @Query annotation.

This allows some flexiblity because you are still able to offer sort parameters to the consumers of your app. Check out the example below:

interface SampleRepository extends CrudRepository<Employee, Long> {

    @Query("select e from Employee e where e.firstName = :firstName")
    List<Employee> findCustomEmployees(String firstName, Sort sort);


Spring Data JPA will turn this custom query into a JPA query when provided not just with a criteria (firstName) but also a custom sort via findCustomEmployees("Alice", Sort.by("lastName"))

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