Lucas Jellema, active in IT (and with Oracle) since 1994. Oracle ACE Director and Oracle Developer Champion. Solution architect and developer on diverse areas including SQL, JavaScript, Kubernetes & Docker, Machine Learning, Java, SOA and microservices, events in various shapes and forms and many other things. Author of the Oracle Press book Oracle SOA Suite 12c Handbook. Frequent presenter on user groups and community events and conferences such as JavaOne, Oracle Code, CodeOne, NLJUG JFall and Oracle OpenWorld.
Many organizations collaborate in one or more ecosystems: groups of organizations that work together in vertical chain or share common…
Correlation is a powerful thing. When two metrics rise and fall in a similar way, surely that cannot be just…
We recently enabled Extended HTTP Access Logging on our WebLogic Managed Servers. This adds the average response times and potentially…
This story is based on true events. It happened fairly recently.I was called into an organization that was experiencing performance…
This article is an attempt to demonstrate the performance gains – and programming elegance – that is at our disposal…
As of ES 2018 (recent browsers or Node 10), JavaScript support asynchronous generators. Generators are functions that return a set…
If data is available from REST APIs, Jupyter Notebooks are a fine vehicle for retrieving that data and storing it…
Oracle OpenWorld and CodeOne 2018 are two co-located conferences that took place in October 2018. Some 2000 sessions presented by…
It was through inspecting some Python code that relied quite heavily that I suddenly realized the beauty of the ES6…
Earlier this month, Oracle announced the availability of the latest Exadata machine, the X8-2. As well as the option to…
Oracle Database 18c XE (eXpress Edition) is the free community edition of the enterprise edition of Oracle Database. Oracle Database…
All too often I found myself editing Kubernetes resource definitions in the Kubernetes Dashboard. Modifying for example the type of…
I frequently want to demonstrate the working of Apache Kafka and/or provide colleagues and other audiences with an environment for…
This article highlights a use case implementation I recently implemented (for a demo session) leveraging Oracle Functions as well…
Oracle Functions is currently in limited preview and is expected to soon reach wider availability. Rolando Carrasco did this write…
Oracle Cloud Infrastructure Object Storage is a public cloud service for storing data to which you need fast, immediate, and…
Three services have been deployed to my Kubernetes cluster running on a public cloud environment. These services expose port for…
At AMIS we are quite happy users of Microsoft Yammer. Days with 10 or more messages are no exception and…
AMIS is part of the Conclusion ecosystem of over 20 companies, each with their own specialty and identity. Several times…
Data Wrangling is a crucial stage in the data science workflow. Or in any workflow that starts from raw data…