The Pipelined Pancake Party – demonstrating the Power of Parallelization and Pipelining in JavaScript with Promises and Asynchronous Generators

Lucas Jellema

This article is an attempt to demonstrate the performance gains – and programming elegance – that is at our disposal with the advent of asynchronous generators in ES 2018 (JavaScript), for example in Node 10 and later. With asynchronous generators and Promises, we can implement parallel, asynchronous and pipelined processing […]

Running Apache Kafka on Minikube

Lucas Jellema

I frequently want to demonstrate the working of Apache Kafka and/or provide colleagues and other audiences with an environment for a workshop that involves Apache Kafka. I have been struggling to find  a good way to get Kafka to function properly on Minikube – the standalone, single node Kubernetes cluster […]

Some Notes on my small steps with Oracle APEX

Lucas Jellema 1

In this article, I will share some of my personal findings and discoveries as I start out building a small APEX application. No experienced developer is likely to learn anything from this article – but first timers like me could perhaps benefit from my findings. Some of the challenges I […]

Don’t ask what you can do for documentation – ask what documentation can do for you! (a top down perspective on documentation)

Lucas Jellema

How much documentation is enough documentation? What are the requirements in the definition of done regarding documentation? Cannot simply all code be self-documenting? These are common questions in DevOps, Scrum and other type of software development teams. Typically bottom up discussions among software developers at the time of developing the […]

Session Catalog for Oracle OpenWorld & CodeOne 2018 in JSON files

Lucas Jellema

The Oracle OpenWorld and CodeOne 2018 conferences took place in the last week of October 2018. Together, over 1500 sessions took place. The session catalog with details for all sessions is accessible at https://events.rainfocus.com/widget/oracle/oow18/catalogcodeone18 – at least at the time of writing. The session information includes title and abstract, track, […]

Internet Intelligence – Checking on the accessibility of your web application from Anywhere in the world – for free with Oracle Cloud Infrastructure

Lucas Jellema

A valuable capability that organizations using Oracle Cloud Infrastructure have available is internet intelligence. This capability allows you to monitor the health and accessibility of your web site’s  or web application’s host – from over 30 locations across the world. You enter the IP address of the host and the […]

CQRS through Twitter – more fun than meaning

Lucas Jellema

As part of my 50 Shades of Data presentation, I talk about CQRS – Command Query Responsibility Segregation. The idea that you can have one or more read only data stores with data replicated from the master store where all data manipulation (commands) take place. In a different presentation, I […]