The JVM can be a complex beast. Thankfully, much of that complexity is under the hood, and we as application developers and deployers often don't have to worry about it too much. With the rise of container-based deployment strategies, one area of complexity that needs some attention is the JVM's memory footprint.

Two kinds of memory

The JVM divides its memory into two main categories: heap memory and non-heap memory. Heap memory is the part with which people are typically the most familiar. It's where objects that are created by the application are stored. They remain there until they are no…

Hi Spring fans! In this extra-long installment I talk with longtime friends and fellow developer advocates, Okta's Matt Raible and Google's James Ward. We talked about Java, Kotlin, Spring, cloud computing technologies, security, Go, paradigm changes, web frameworks past and present, Macromedia, Adobe, Scala, and a million more things! This was a ton of fun for me so I'm hoping you'll enjoy it too.

Google Developer Advocate James Ward on Twitter (@_jamesward) Okta Developer Advocate Matt Raible on Twitter (@mraible)

Surely there’s never been a better time to become a Java developer?

There are productivity tools available these days that would have been mind-blowing just five years ago.

Take Spring Boot for example. Many people reading this on the Spring website may be familiar with Spring Boot. But let’s take a moment to acknowledge its awesomeness.

Years ago, if you were going to use the Spring Framework in your application, you had to be OK with a certain amount of configuration toil creeping into your day. But it wasn’t nice friendly configuration like, (ah, actually, sorry, I can’t think of an example…

This blog post is the first in a series of posts that aim at providing a deeper look into Reactor's more advanced concepts and inner workings.

It is derived from my Flight of the Flux talk, which content I found to be more adapted to a blog post format.

I'll update the table below with links when the other posts are published, but here is the planned content:

1. Assembly vs Subscription (this post)
2. Debugging caveats
3. Hopping Threads and Schedulers
4. Inner workings: work stealing
5. Inner workings: operator fusion

If you're missing an introduction to Reactive Streams and the basic concepts of Reactor, head out to the site's learning section and the reference guide…

On behalf of the team and everyone who has contributed, I’m happy to announce that Spring Initializr has been updated and is now available on start.spring.io.

A short history of Spring Initializr

The project started out as a minimal HTML form, letting you generate a Spring Boot application with a few options. It's been well received by the Spring community, so the team added new ways to interact with it, through the command-line or your favorite IDE.

After a while, we decided to work on a first revision of the UI. We simplified the form, leaving the essential parts front and center and pushing…

Hi Spring fans! Welcome to another installment of This Week in Spring! I flew 14 hours to Tel Aviv, Israel. I then spent 28h on the ground visiting customers, visiting my friends at Codota, and then presenting at a packed house at the Israel Java User Group. Then I flew another 14 hours back to San Francisco, CA where I presented for a four-hour online course on using Kotlin with Spring Boot. Tonight I'll fly to Atlanta, GA for the incredible DevNexus conference where I'll be presenting (twice) with the good Dr. Venkat Subramaniam on Kotlin (and Spring) and more. Tomorrow, I'm doing a four…

Hi Spring fans! This week I'm excited to sit down and talk with mr. Reactive himself, Reactor project lead Stéphane Maldini. In this interview we talk about the history of the reactive programming for Spring, the Reactor project's evolution over time, from then to now and looking forward.

the Project Reactor website Stéphane on Twitter

Hi Spring fans! What a week! This week I'm in San Francisco, CA; Columbus, OH (for the epic SpringOne Tour stop there), and then it's off to Tel Aviv, Israel for customer visits and an appearance at the Israel JUG. If you're around, then I'd love to connect!

Anyway, and as always, we've got tons to cover so let's get to it!

• Spring Cloud Finchley.SR3 Now Available
• Out of the Box Application Observability with Spring Boot & Pivotal Cloud Foundry - Pivotal
• The CIO's guide to Kubernetes
• Spring Cloud Data Flow and Skipper 2.0 RC1 Released
• Spring Tools 4.1.2 released
• Last week in A Bootiful Podcast, I had the privilege of interviewing Sree Tummidi, Senior Product Manager for Security at Pivotal
• CVE-2019-3778: Spring Security OAuth 2.3.5, 2.2.4, 2.1.4, 2.0.17 Released
• Check out the latest-and-greatest in my second favorite place on the internet, start.Spring.io: What's new with Spring Initializr
• Last week was the recap post for season 5 of Spring Tips where we look at all the episodes from the last season. Spring Tips: Season 5 Recap I'm already hard at work on season 6, of course, so stay tuned. If you get through the Season 5 episodes, then you might go back and watch the older ones…

Hi Spring fans! This week I'm excited to welcome Sreee Tummidi, a senior product manager working at the intersection of application security and platform at Pivotal. We talked about security, Spring Security, cloud platforms, OAuth, OIDC and OIDC Connect, SAML, and of course the Cloud Foundry UAA, and tons more.

Twitter: @sreetummidi UAA