Extending Local Dapr Development Environment for Custom Components
In a previous article I described how I prepared my local development environment from working with the source code of the Dapr project – locally editing, building and running …
Author: Lucas Jellema
Customizing Dapr–preparing my environment
In other articles I will write about the value of Dapr – as a personal assistant to any application that helps out with state, configuration and secrets, receiving inbound …
Dapr on OKE–Distributed Application Runtime on OCI Kubernetes Engine
One of the most exciting frameworks I have ran into into recent years is Dapr (dapr.io) – distributed application runtime. Dapr is a cross technology runtime framework that supports …
Dumb pipes, smart endpoints–the Post Filter, the register to stop unwanted mail
Many people receive mail at their front door that they do not want to receive. Commercial mail, mail from companies they may perhaps made enquiries with long ago, mail …
Getting started (again) with Kubernetes on Oracle Cloud
For many of my recent activities, I have not worked with or even on (knowingly at least) Kubernetes. So for many months I have not touched my OKE cluster …
Run and Access GUI inside VS Code DevContainers
VS Code DevContainers allow us to easily configure and run a container with our development tech stack for the specific project or product we are working on – and …
Getting started quickly with querying OCI from Terraform in Cloud Shell
Terraform is all about infrastructure (and platform) as code. Creating OCI resources through Terraform is probably the best way to manage your cloud resources. I have written several articles …
OCI DevOps Composite–creating Build & Deploy Pipeline resources using Terraform plans
I recently started a GitHub repo with Terraform plans for the creation of what I call OCI Composites – combinations of resources that will frequently be used together and …
VS Code Extension–GistPad–for quick gist creation, editing and consumption
Gists are the code snippets that you want to retain and share – with yourself and with others. Gists can be embedded in websites, blog articles and articles on …
Creating, Building and Invoking a Function on OCI with Terraform
Automation through infrastructure as code is the name of the game. And I am a player in that game. In the last few weeks I have spent a lot …
Visual Studio Code–the Code Tours extension for in context and interactive readme
The most popular IDE – VS Code – comes with a ton of extensions, and each can make life easier, more productive and more fun for developers. Recently I …
OCI DevOps Build Pipeline for Functions
Oracle Cloud Infrastructure offers the Functions service, a FaaS offering with serverless functions, based on container images built with the Project Fn FDK. In a previous article, I introduced …
OCI DevOps Deployment Pipeline for Functions–automation on Oracle Cloud
Oracle Cloud Infrastructure has a free DevOps cloud service that includes build and deploy pipelines in addition to source code and artifact repositories. I have written about OCI DevOps …
How to open IDCS Console from OCI– Finding the entry to Identity Cloud Service
I have just spent way too much time on finding the way to the Oracle IDCS console from within my OCI (Oracle Cloud Infrastructure) console. I was reading a …
Simple queries against Oracle Cloud NoSQL Database
I have been struggling in my first simple steps with querying data in a NoSQL Database table on Oracle Cloud. Creating the table is easy enough – either in …
Cleaning Out a Compartment on Oracle Cloud using Terraform provider
The situation: a Compartment on OCI should be removed. Or at least all its resources should be purged. Or at least most of the resources should be removed. The …
OCI DevOps–Build Pipelines and Code Repositories for CI
This article introduces Build Pipelines and Code Repositories in OCI DevOps (released on October 26th 2021) – complementing the Artifact Registry and Deployment Pipelines that were first launched in …
OCI DevOps–Free Automated Cloud Native Application Deployment to Oracle Cloud
Deployment is a term used frequently and often casually in software engineering. A term that for a long time was a bit cryptic to me. What exactly is deployment …
Scaling [down] the Mountain of Debt – Four dimensions of IT Debt
WYSIWYG may not be true for all IT systems. What you see may be more than what you actually get. As a Product Owner, you have to be very …
The Release Formula: R = ΔF + ΔNF + ΔQ
TL;DR: a software release introduces changes in three areas: functional, non-functional and quality. Each change should contribute to identified objectives – and the contribution should be measurable. Product teams …
The True Cost of a Feature–Kill your darlings
TL;DR: the true cost of a software feature includes a long tail of operational and maintenance cost that should be taken into consideration when first implementing the feature. The …
Polling Rank – Interactive Visualization Component for Ordering Options
TL;DR: live demo of the Poll Rank component on Code Pen: https://codepen.io/lucasjellema/pen/NWpoBeM Bringing things to order is a common requirement. Making clear how things are mutually ordered, which comes …
Visualizing Recipes in aid of Freshman Cooks
I am not the best cook in the world – it has been said. But I am making an effort to step up my game. My two sons have …
Implementing Serverless Multi Client Session Synchronization with Oracle Cloud Infrastructure
TL;DR – Multi Client Sessions can be facilitated in a fully serverless fashion. Two players playing Tic Tac Toe or Chess, teams collaborating on a document or diagram, an …
Serverless Distributed Multi User Browser Session Synchronization
Assume a browser based (or desktop electron) stand alone, client side only application. Multiple users are working with that application at the same time, on their own laptops and …
Introduction to D3 Force for Simulation and Animation
The D3 library is great for creating rich and interactive data visualizations running in your browser. D3 is a JavaScript library that provides an easy bridge between the power …
Starting my own Game Studio–on the ease and the power of SVG
My very first steps in programming consisted of typing in the BASIC program listings from computer magazines. Usually very simple games with very poor UX. That probably is the …
Executing JavaScript from PL/SQL in Oracle Database 21c with Multi Language Engine
Oracle Database Release 7 – end of 1993 – introduced PL/SQL as language for Stored Procedures, Functions and Triggers. This was just before I joined Oracle Corporation, in May …
How to build [a CI/CD pipeline for] an Oracle Database application–kicking off a six part series
Build is an overloaded term in the world of software engineering. Building software used to be mainly a fancy way of saying “programming”. Now after the construction of the …
How to unit test a SQL query?
A simple challenge: I am working on a SQL query. Not a trivial query. I am trying various approaches. I believe I may have found a solution that works. …
SQL–Only Counting Records Sufficiently Spaced apart using Analytics with Windowing Clause and Anti Join
A nice SQL challenge was presented to me by a colleague. The challenges basically consisted of this table. A table contains records that describe login events. Each record has …
The Prototype Pitfall
TL;DR Prototyping is an essential way to determine the technical feasibility and functional desirability of features of a software system. There is a clear and present danger that the …
Building my own Video Recorder–Automating Scheduled Streaming Video Recording on Windows 10
My objective: create a mechanism for recording streaming video on my Windows laptop on a preprogrammed timestamp and channel. My motivation: show that I can do this (using AutoIt, …
Schedule Spotify Good Morning Playlist–using AutoIt and Windows Task Scheduler
I would like to have my Spotify playlist played to me every morning at 8AM sharp. Using the Windows Task Scheduler and an AutoIt script I can have the …
Capturing those elusive Video Streams on Windows 10
I have tried to capture various video streams running in my browser using a plethora of screen capture and video recording tools. However, some streams prove hard to pin …
Automating actions on Windows – my first steps with AutoIt
I recently spent quite some time on getting to know Playwright – a great tool for automating virtually any operation performed in a browser. Playwright is great for automating …
Create OCI Function running a Playwright scenario
TL;DR – How to create a Function on Oracle Cloud Infrastructure that uses the Playwright library for running headless browser scenarios, for example for Web UI Health Check and …
Quickly Run NodeJS Demos in Vanilla Windows Sandbox featuring Scoop
TL;DR – this article describes how Windows Sandbox can be used to prepare a well known environment for demonstrations, tutorials, tests etc. Scoop is a great package manager for …
Run Automated Step-by-Step Browser Scenarios for Instruction or Demo from NodeJS applications with Playwright
TL;DR; Run demonstrations or instructions of browser actions. Allow the user to pause and skip acts, and to reset and switch scenarios. Allow the user to interact with the …
Inject Generic Floating Toolbar into Any Web Application or Site using Playwright
The objective I am pursuing is the following: I want to be able to open a web site or web application and show a floating toolbar on top of …