Java Pub House Freddy Guime & Bob Paulin

Ok, so it's an incredible time to be in the Java Ecosystem, and one of the biggest frameworks out there just dropped their three-point-oh version! That's right! So Spring Boot is not officially 3.0, and it has as a Baseline Java 17! (oohh!!). So we brought in the big guns to talk about what does it mean to Upgrade to Spring Boot 3, and what are the new cool toys we can expect from that upgrade! 
In all, an amazing interview full of great things that are available NOW (so whatcha waiting for! Upgrade!)
http://www.javapubhouse.com/datadog
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 - Dan Vega's own What's new in Spring Boot 3 (https://www.danvega.dev/newsletter/whats-new-spring-boot-3/)
 - Official Spring Framework 6 Wiki (https://github.com/spring-projects/spring-framework/wiki/What's-New-in-Spring-Framework-6.x)
 - Spring Boot 3, and Spring Framework 6, What's new? (https://www.baeldung.com/spring-boot-3-spring-6-new)
 - Spring Boot 3 goes GA (https://spring.io/blog/2022/11/24/spring-boot-3-0-goes-ga)
 - Preparing for Spring Boot 3 (https://spring.io/blog/2022/05/24/preparing-for-spring-boot-3-0)
 - 
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Whew! So we took a big break over summer (like Bob said, we were just swamped with work.. oof), but we are BACK! and like always we are ready to explore even deeper Java topics for the professional developer.
This time we set our sights in Apache Kafka, one of the (if not THE) dominant distributed messaging framework / broker. If you have been integrating webservices, you might have been running into message brokers (and applying Enterprise Integration Patterns), well if so, you most likely have run into Kafka. 
We dive into "What does Kafka Solve", into what it is (and isn't), and why you should use it (or not use it), and how it differs from traditionalling Messaging systems.
In all, this is another episode of "Cloud stuff", and, like you know, that's where everything interesting is at! So have a listen! 
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We thank DataDogHQ for sponsoring this podcast episode

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Apache Kafka
https://kafka.apache.org/
Kafka Quick Start
https://developer.confluent.io/quickstart/kafka-on-confluent-cloud/
What IS Apache Kafka
https://developer.confluent.io/what-is-apache-kafka/
Apache Kafka Quickstart (With Tim Berglund, Hi!!!)
https://kafka.apache.org/quickstart 
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Yeah! so we have been working with the cloud for a while, terms like K8s, EC2, Route53, BlobData, CLI has been swinged around... and is a little mysterious, and sometimes looks like a black box where you just click buttons, add things, type commands, until it finally something good happens. But if something bad happens, we tend not to have the slightest idea on why!
Never fear, on this episode of PubHouse we start from the very beginning on describing (And dismantling) what the "Cloud" really is... Starting on how we got there, what are the different "components" of most clouds, and how to reason about them.
This way, the next time something unpredictable happens, you will know exactly where to start troubleshooting and how to navigate this space! This is the first episode of a series (probably a series of 2) on Cloud technologies. So if you never been exposed to the cloud and you're curious, or even if you've been working on it but everything sounds mysterious, then dive in!
http://www.javapubhouse.com/datadog

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Intro to AWS 
https://docs.aws.amazon.com/whitepapers/latest/aws-overview/introduction.html
What is Elastic Load Balancing
https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/what-is-load-balancing.html
What is Amazon Route 53
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/Welcome.html
EC2 vs ECS vs Lambda
https://www.cloudzero.com/blog/ecs-vs-ec2
Intro to Azure Fundamentals
https://docs.microsoft.com/en-us/learn/modules/intro-to-azure-fundamentals/
Azure Containter Registry
https://azure.microsoft.com/en-us/services/container-registry/#features
Azure Compute
https://azure.microsoft.com/en-us/services/virtual-machines/#overview
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Ok, so is time to talk about something secretive! Like API Passwords, Auth tokens, or keys... these are things that we want to have as a Secret within our microservice. And yeah, adding them into your source code is a big no-no
Here we cover the dos (and dont's) of secret management, what are the benefits and drawbacks of the different solutions and we explore some of our favorite open source (and Cloud tools) for keeping secrets. We answer some important questions on how to effectively store and manage these secrets (the short answer is don't try to do it yourself!), and end up with the list of best practices for it.
If you are building a non-trivial (or interesting) web service, this is a must-listen episode!
http://www.javapubhouse.com/datadog
We thank DataDogHQ for sponsoring this podcast episode
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Language Features
Using AWS Secrets Manager to manage secrets in Spring Boot
https://raymondhlee.wordpress.com/2019/10/11/using-aws-secrets-manager-to-manage-secrets-in-spring-boot-applications/
AWS Secrets Manager
https://aws.amazon.com/secrets-manager/
Spring Cloud AWS
https://cloud.spring.io/spring-cloud-aws/reference/html/
Hashicorp Vault
https://www.vaultproject.io/
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So is time to celebrate! We got a new box of toys with the new release of Java! This is also a Long-Term-Support release which means that's usually a "good one" to jump into! Switch Expressions! Helpful Nullpointers, Sealed Classes... there is a TON that's new
And we got the best Doctor in town to walk us through all of them. We're of course talking about Stuart Marks! (AKA Dr. Deprecator). We cover most of the important features from 11 to 17 (there's a ton that was left out, so keep following the links to know more!)

http://www.javapubhouse.com/datadog
We thank DataDogHQ for sponsoring this podcast episode
Don't forget to SUBSCRIBE to our cool NewsCast OffHeap!
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Language Features
Pattern Matching for instanceof
https://docs.oracle.com/en/java/javase/16/language/pattern-matching-instanceof-operator.html
Switch Expressions
https://docs.oracle.com/en/java/javase/13/language/switch-expressions.html
Sealed Classes
https://docs.oracle.com/en/java/javase/15/language/sealed-classes-and-interfaces.html
Text Blocks
https://docs.oracle.com/en/java/javase/13/text_blocks/index.html
Debugging Features
Helpful NullPointerExceptions
https://www.baeldung.com/java-14-nullpointerexception
Performance Features
New Garbage Collectors (Shenandoah, ZGC)
https://blogs.oracle.com/javamagazine/post/understanding-the-jdks-new-superfast-garbage-collectors
Unix-Domain Socket Channels
https://openjdk.java.net/jeps/380

Deprecation & Platform evolution
Remove the Nashorn JavaScript Engine (Plug Graal!)
https://openjdk.java.net/jeps/372
Deprecate the Security Manager for Removal and Applets
https://openjdk.java.net/jeps/411
Strongly Encapsulate JDK Internals
https://openjdk.java.net/jeps/403
Warnings for Value-Based Classes
https://openjdk.java.net/jeps/390

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So while Java is the "main" language of the JVM, it is by no means the "only" language. And one of the purely functional programming languages is getting a new facelift!
Scala has been going through a revamp on the syntax and the features, and if you ever run into a scala user you know how passionate they are about their language! (hint: they love it!)
So while we might be working in Java projects most of our time, it is a good time to revisit that developer toolbox and learn when and where to use it. And if anything else, having a dip into a fully functional programming language teaches any budding developer how to see things differently!
So maybe Scala is "not" the language you want to program all your new projects, but understanding its strengs, its thinking (and with Scala 3) and its purpose, it makes it for a very sharp tool to have at the ready when you really need to tackle that Data Sciency / Functional Programming problem.
In addition, we bring one of the biggest names in the Scala Community to walk us through it all @DeanWampler (https://twitter.com/deanwampler) has been working with Scala since the early days and has just published his new O'Reilly book Programming Scala (https://deanwampler.github.io/books/programmingscala.html). So what are you waiting for, add a new tool to your toolbox with Scala 3.0!

http://www.javapubhouse.com/datadog
We thank DataDogHQ for sponsoring this podcast episode
Don't forget to SUBSCRIBE to our cool NewsCast OffHeap!
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Programming Scala (Dean Wampler)
https://deanwampler.github.io/books/programmingscala.html
New In Scala 3
https://docs.scala-lang.org/scala3/new-in-scala3.html
Scala 3 Features
https://docs.scala-lang.org/scala3/book/scala-features.html
A look at inline
https://medium.com/scala-3/scala-3-a-look-at-inline-and-programming-scala-is-now-published-9690ca43c23a
Safer Pattern Matching with Matchable
https://medium.com/scala-3/scala-3-safer-pattern-matching-with-matchable-f0396430ded6
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