Author: Lucas Jellema
Data analytics is what turns data into business value. Oracle has a long history in Data Analytics – from Oracle Discoverer and its predecessors such as Data Browser through …
If your tool is a hammer, every problem looks like a nail. Many of us have seen situations where this tunnel vision over time took hold. And for many …
The challenge: you are running a service, API or web application in a Docker container, locally on your laptop or in a cloud based VM or container platform. You …
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, …
Graph Databases are good at recording nodes and edges – and even more at performing queries that traverse the edges. Some challenges can be dealt with in Graph Databases …
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 …
An important part of enabling optimal use of SaaS applications is integrating various functions in said applications. Events in one application need to have an effect in others. From …
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 …
This article describes a use case for which a traditional SQL-powered relational database approach can provide a solution – but for which that traditional approach is not the optimal …
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 …
In this article I will discuss the steps I had to go through in order to take my locally running Node application – with various hard coded and sometimes …
Oracle has two main pillars on which its (future) business rests – dixit Larry Ellison: Oracle Cloud Infrastructure (including the Autonomous Database) and SaaS. In this article, I will …
Oracle APEX is a low code application development framework. It can be used free of charge – either as part of an existing Oracle Database license or running in …
One of the nice discoveries I made last week during CodeOne 2018 was Eclipse Che. This is a browser based polyglot IDE that runs in a Docker container – …
One of the session at CodeOne 2018 discussed an upcoming feature for Oracle Database – supported in Release 12.2 and up – that would allow developers to consume Kafka …
Yesterday, at the Oracle ACE Directors Product Briefing, I received a gift. It is called QuickSQL. And it is a free online service that generates SQL DDL and DML …
In order to provision a Kubernetes cluster on Oracle Cloud Infrastructure, you need to prepare the OCI tenancy and create a compartment with appropriate network configuration and associated resources. …
Anyone with a trial account for Oracle Cloud can use Oracle Cloud Infrastructure (OCI) to get herself a three-node Kubernetes Cluster instance, running on Oracle’s managed Kubernetes Engine Cloud …
Oracle Cloud Infrastructure is Oracle’s second generation infrastructure as a service offering – that support many components including compute nodes, networks, storage, Kubernetes clusters and Database as a Service. …
Primarily for my personal reference: this article provides instructions on running a Docker container image as a Kubernetes Deployment plus Service. It compares the Docker run command with the …
Monitoring sounds like a terribly useful thing to do. And in many situations it is of course. However, rather than starting our discussion with monitoring, we really should start …
This article introduces a Docker Container Image that runs an Oracle JET application from a Git repository and is capable of dynamic reload of that application when the repository …
My desire: find a way to run a Node application from a Git(Hub) repository using a generic Docker container and be able to refresh the running container on the …
It should be simple and in the end it was relatively simple – but still I was struggling a little bit with getting two key components of the Elastic …
Preparation: before I started with Prometheus, I installed VirtualBox, Minikube with Tiller on my Windows 10 laptop – as described in this article: https://technology.amis.nl/2018/08/13/running-kubernetes-1-10-using-minikube-on-windows-10-adding-kubectl-and-helm-tiller/. I then increased the Base …
Some quick steps to get Minikube for K8S 1.10 up and running on Windows 10 (presuming VirtualBox has already been installed) Download kubectl binary from: https://storage.googleapis.com/kubernetes-release/release/v1.11.0/bin/windows/amd64/kubectl.exe Copy kubectl.exe to …
July 2018 saw another edition of the Oracle Developers’ tour through India, called Yatra. In just over two weeks, seven cities participated in this tour – with each city …
In 2013 I have participated in the OTN Yatra – a conference tour of six cities in India (). This year I am glad to be back for a …
In a recent post, I introduced the managed Oracle Cloud Service for Kubernetes, the Oracle Kubernetes Engine (OKE): https://technology.amis.nl/2018/05/25/first-steps-with-oracle-kubernetes-engine-the-managed-kubernetes-cloud-service/. A logical next step when working with Kubernetes in somewhat …
Oracle recently (May 2018) launched its Managed Kubernetes Cloud Service (OKE – Oracle Kubernetes Engine) – see for example this announcement: https://blogs.oracle.com/developers/kubecon-europe-2018-oracle-open-serverless-standards-fn-project-and-kubernetes. Yesterday I got my self a new …
For conducting some experiments and preparing several demonstrations I needed a locally running Kafka Cluster (of a recent release) in combination with a KSQL server instance. Additional components from …
Put simply – CQRS (Command Query Responsibility Segregation) is an architecture pattern that recognizes the fact that it may be wise to separate the database that processes data manipulations …
I have a Windows laptop. And of course I want to work with Docker containers. Using the Docker Quickstart Terminal is one way of doing so, and to some …
This article describes how to quickly get going with KSQL on Kubernetes. KSQL is Confuent’s ‘continuous streaming query language’. It allows us to write SQL-like queries that operate on …
For workshop I will present on microservices and communication patterns I need attendees to have their own local Kafka Cluster. I have found a way to have them up …
In previous articles, I have talked about using Docker Containers in smart testing strategies by creating a container image that contains the baseline of the application and the required …
Here is a procedure for running an Oracle Database, preparing a baseline in objects (tables, stored procedures) and data, creating an image of that baseline and subsequently running containers …
Docker Containers can be stopped and started again. Changes made to the file system in a running container will survive this deliberate stop and start cycle. Data in memory …
My requirement in this case: a push of one or more commits to a GitHub repository need to trigger a Node application that inspects the commit and when specific …
The requirement is simple: a Node JS application that receives HTTP requests and forwards (some of) them to other hosts and subsequently the returns the responses it receives to …
