I CODE JAVA HYBRID, Johannesburg South Africa.
Hebert Coelho de Oliveira
• 15+ years of experience in Software Development
• Published two Books in Brazil
• College teacher for four years
• Living in Germany for six years
• Former blogger with over 1M views in 1 year from all over the world
• Contributed to several open-source frameworks like Spring, Quarkus, etc
• Working at MediaMarkt / Saturn, a multinational eCommerce
Other Speakers
Fourier Analysis Visualisation and it’s Application in 2D Drawings
Mathematics has been dubbed the “language of the universe” and yet it remains a daunting subject for most people. In my attempt to show the beauty and power of mathematics, I’ll be visually demonstrating and explaining the simple concept of Fourier Analysis (what’s in a name right?) and how I applied it in a 2D drawing software that I developed in Java, inspired by the impressive work done by sketch artists.
Imperative, declarative, functional, object oriented: four of a Kotlin kind
Is Kotlin a functional language? Yes, but… Is it object oriented? Yes, but…
Looking at four concepts: imperative, declarative, functional and object oriented
How does Kotlin make it easy to use either or all at the same time. This talk contains: Some useful Kotlin tips, some guidelines and pitfalls for the four concepts, traces of definitions and software history. After listening to this talk you will understand what these concepts are, what each is good for and how they are supported by the Kotlin language.
Java resilience: How strong is your blend?
Troubleshooting large, distributed systems is hard. When production is down and you need to fix it as soon as possible, what do you do? In this talk I will talk about tools available to help you find and reproduce problems and also touch on resilience patterns for Java applications.
Java, Docker and Memory (The 3 Musketeers?)
Deploying a Java application to a PRD environment means knowing what kind of resources it needs to run, but how do you know that a head of time?Sure, its easy to give an application more hardware, but if with the rise of Kubernetes more Java applications are being deployed in Docker containers. Most Kubernetes environments want to know what resources the Java application needs to assist with scheduling and balancing the load across nodes.
Jakarta NoSQL Powered by Cosmos DB on the Cloud
Jakarta NoSQL is a new standard for accessing non-relational databases on the cloud. Cosmos DB is a best-of-breed planet scale NoSQL database on Azure that is compatible with MongoDB, Cassandra and Gremlin.In this session we will see how to use these technologies together in cloud native Jakarta EE applications. Most of the session will be demos with a minimal number of slides.
Sweet Streams (Are made of this)
As business needs change when new ideas are created, we need to orchestrate flows that can implement these ideas quickly. This talk shows how Spring Cloud Data Flow can address these needs using a toolbox of pre-existing and custom-built stream apps.
Blockchain in Java
Web3j is a library that interacts with Ethereum smarts contracts. Understand what Smart contracts are and how to connect to the Ethereum network using Java / Web3j.
Optimizing the search in a Multinational company
In this talk, we will discuss the challenges of collecting and providing data to the customer.
- What did we do to process over 12+ million products in a few hours daily?
- How could we remove overload on Solr during high peaks?
- Which changes did we relate to code architecture, microservices, and frameworks?
- How do we prepare for BlackFriday?
- What did we achieve, and what are the future Steps?
- How can we allow “search managers” to configure the Search dynamically?
“Cooking with Gas” upgrade your database to Zero Friction
Join us in this beginner session, where we’ll take you from zero to implementing and developing Java applications using Azure CosmosDB.
We’ll guide you through the following aspects:
– Create your Free tier CosmosDB Database
– Deploy to Azure
– Scale-out to meet global demand in response to HTTP requests or events.
– Seamless Spring integration using Spring Cloud Azure
This beginner-oriented session should empower everyone to write code on a production level. Join us to discover the powerful integrations of Java and Azure CosmosDB.