Mark Heckler

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Mark Heckler

Sultan of Spring

Mark Heckler is a software developer & Spring Developer Advocate at VMware, conference speaker, Java Champion, and Google Developer Expert in Kotlin focusing upon developing innovative production-ready software at velocity for cloud and edge computing platforms. He has worked with key players in the manufacturing, retail, medical, scientific, telecom, and financial industries and various public sector organizations to develop and deliver critical capabilities on time and on budget. Mark is an open source contributor and author of Spring Boot: Up and Running ( and can be found on Twitter @mkheck.

Current sessions

Das Boot: Diving into Debugging Spring Boot Applications

Spring Boot streamlines Java and Kotlin development with its developer-first focus. By simplifying dependency management and deployment, providing unmatched autoconfiguration capabilities, and leveraging convention over configuration at every opportunity, developers can focus nearly all of their efforts on designing, developing, and delivering amazing software. This is the happy path, and it is wide.

Good developers write good code, but great developers can diagnose the inevitable issues that arise in complex software systems. When your code takes the road less traveled, how can you quickly identify, isolate, and resolve the problem, not the symptoms? How can you move from good to great?

In this session, the presenter will take you on a live-coding adventure(TM) into the hidden passageways of your Spring Boot application. Topics covered may include (but are not limited to) the following, depending upon time available:

* Application startup, including autoconfiguration steps/process
* Bean initialization and configuration
* Debugging local apps via IDE
* Remote debugging container applications
* Tracing distributed apps
* Debugging reactive code

Come to this session to get a deeper understanding of your Spring Boot apps and level up your debugging skills!

Spring Boot Omakase: A fast-paced "chef's choice" dive into fun & useful topics!

Spring Boot has revolutionized the Java space and continues to do so, evolving constantly to increase developers' superpowers and advance the state of production-grade software development.

Presenting a dynamic technology before vastly different audiences often limits what can be proposed & presented. Let's fix that!

This session is an omakase, a "chef's choice" of key points and latest/coolest capabilities for developers in the Spring Boot ecosystem. Known by French chefs as _m’étonner_ ("Astonish me!"), the goal is to combine useful patterns and new possibilities in one fast-paced live-coding adventure from which everyone leaves with something tasty to chew on. Come for the apps, stay for dessert, leave satisfied & excited for the next "course" of production software!

RSocket + Spring : A Full Throttle Introduction

You've evolved from monolith to microservices, from blocking code to reactive, all in pursuit of better scaling and resource maximization. And you're _so close_! How do you cross the final frontier - the network boundary - and wring out the ultimate in system performance, flexibility, and resilience...and _system-wide_ scalability?

Enter RSocket, a transport-independent binary protocol. Building upon the reactive streams paradigm and Project Reactor, RSocket knocks down the (network) walls separating your microservices and enables you to truly treat them as a fully-interconnected system while providing mechanisms that increase flexibility and resilience instead of reducing it.

RSocket has four interaction models to support all the use cases:

* request/response
* request/stream
* fire & forget
* channel (bi-directional stream)

Combining Spring Boot with RSocket gives you the fastest, most developer-friendly way to explore and exploit your reactive superpowers. Come to this session for a full throttle, live-coding adventure introducing Spring Boot RSocket mechanisms & models and showing how to put them to work for you. All examples will be coded *live & in real-time*!

Game of Streams: How to Tame & Get the Most from your Messaging Platforms 🐉

Most mission-critical systems have distributed elements or are entirely distributed, resulting in a number of challenges: performance, scalability, reliability, resilience…​the eight fallacies of distributed computing are alive and well!

Messaging platforms are often used to solve these problems and increase the "ilities", but they don’t come without a few complexities of their own. Come to this session to learn not only how to use open source solutions like Spring Cloud Stream, RabbitMQ, & Apache Kafka to maximize your distributed systems' capabilities while minimizing complexity…​but also how to really use them! There be dragons when dealing with messaging platforms; the presenter will show you several ways to tame and harness them for maximum fire, maximum altitude. All examples will be coded live & in real-time!