Introduction

Project Loom aims to bring "easy-to-use, high-throughput, lightweight concurrency" to the JRE. One feature introduced by Project Loom is virtual threads. In this blog post, we'll be exploring what virtual threads mean for web applications using some simple web applications deployed on Apache Tomcat.

High-throughput / Lightweight

The first experiment was to compare the overhead associated with using Tomcat's standard thread pool to the overhead associated with using a virtual thread (Loom) based executor. The test environment used is detailed at the end of this post. Performance…

What is the Spring Cloud Function?

Spring Cloud Function is a SpringBoot-based framework allowing users to concentrate on their business logic by implementing them as Java Functions (i.e., Supplier, Function, Consumer). In turn the framework provides necessary abstraction to enable execution of these functions in various environments (e.g., REST, Streaming) as well as serverless environments such as AWS Lambda or Azure Functions, without having to worry about the underlying platform-specific details. This allows developers to focus on writing their business logic and let the framework handle…

Today, we are finishing to transition the Spring support for building native executables from the experimental Spring Native project to the official Spring Boot GraalVM native image support.

In practice, that means we are archiving the Spring Native GitHub repository and moving it to the https://github.com/spring-attic organization. There will be no new release of Spring Native (based on Spring Boot 2.x) and we are encouraging all Spring Boot users to migrate to Spring Boot 3.x to leverage its official native support.

SpringOne

If you missed SpringOne keynote, be aware that the recording of…

Hi, Spring fans! Today Josh Long (@starbuxman) talks to Atlanta JUG, Devnexus, Spring Cloud Task, Spring Integration, Spring Cloud Dataflow luminary, and the living embodiment of the word "joy:" Glenn Renfro (@cppwfs) 

Watch the podcast in living color on Youtube!

Hi, Spring fans! Welcome to another installment of This Week in Spring! How're you? I almost forgot today was Tuesday! Here in the US, we had a three day weekend for President's day, and also I've been streaming for a few hours every day (or almost every day on my little YouTube channel) so the days kinda have blurred together. I'm so glad I caught a glimpse of the calendar or I might have missed this installment. We've got a ton of stuff to get to this week so let's dive right into it!

Also: next week I'll be in Dallas! Let me know if you wanna grab some code and coffee?

• Difference Between exchange(), postForEntity(), and execute() in RestTemplate
• Spring Cloud Data Flow 2.10.1 Released
• Spring Data 2023.0.0-M2, 2022.0.2, and 2021.2.8 released
• Spring Data Repositories – Collections vs. Stream
• Spring for GraphQL 1.1.2 released
• Gradle 8.0 is out!
• Baeldung is hiring a Spring developer! They're looking for a Backend Java/Spring Team Lead with Integration Experience
• Micrometer Application Observability
• Hey, this is important: migrate From Java 8 to Java 17
• VMware Tanzu Application Platform Adds Buildpack Improvements and Application Limits
• I have a new video up on the Manifold project, which offers …

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

Hi, Spring fans! It's early Tuesday morning for me. I'm preparing to head to Chicago, Illinois to meet some customers and have myself a grand ol' time in the windy city. I hope you're doing well, I certainly am.

• A Bootiful Podcast: opensource, Spring Cloud, and Kubernetes maestro Abel Salgado Romero
• Create Dynamic Queues in RabbitMQ
• Difference Between findBy and findAllBy in Spring Data JPA
• Fix EmptyResultDataAccessException When Using JdbcTemplate
• Getting the Current ApplicationContext in Spring
• JUnit 5 @Nested Test Classes
• Java Team Lead with Spring Experience (Remote) (Part Time)
• OpenTelemetry Setup in Spring Boot Application
• Using Google login with Spring Boot 3 and Thymeleaf
• I've been exploring Spring Batch in my latest series, Let's Code: Spring Batch, There are (so far) six parts: one, two, three, four, five, and six. I might do a seventh part to look at GraalVM. Probably. But either way, in this series we look at a lot…

Hi, Spring fans! In this installment, Josh Long (@starbuxman) talks to Abel Salgado Romero (@abelsromero) about open source, Kubernetes, and building Kubernetes controllers with Spring Boot and GraalVM native images.

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's Tuesday, February 7th, 2023, as I write this and I'm so very glad to be talking to you. How're you doin'?

Some housekeeping: I'll be doing more live streams over on my YT channel - join me and we'll talk shop.

I'm going to be in Chicago, IL, next week, and am wondering about doing an in-person livestream folks while I'm there? Anybody wanna meet at a café or something for a little code and coffee? Hit me up!

Anyway, my friends, let's get on with this week's roundup:

• A Bootiful Podcast: Moderne founder Jon Schneider on OpenRewrite, modernizing code bases en masse, freedom and responsibility, and more
• Analyzing the State of Spring Report with the Spring Engineering Team
• Dynamite Duo: GWT Boot and Spring Boot by Dr. Lofi Dewanto
• How To retry Third-party API Elegantly in Spring Boot
• Spring Initializr and Continuous Generation
• Spring Tools 4.17.2 released
• SpringOne State of Mind: Josh Long’s Musings from SpringOne Essentials
• The 2022 State of Spring Survey Report
• Using Micrometer to trace your Spring Data JPA application
• …