Author: Lucas Jellema
Backstage is the Developer Portal Platform that has come out of Spotify and now lives under the CNCF (Cloud Native Compute Foundation) umbrella where it is one of the …
Recently the OpenTelemetry project launched a demo application that demonstrates many aspects of instrumentation, metrics and trace gathering, providing insight across multi-service, multi-technology application stacks and in general how …
I have prepared a Gitpod wokspace definition that allows me to start a fresh development environment with the latest release of Dapr (dapr.io) installed as well as supporting containers …
Gidpod provides ephemeral development environments. Run a Gitpod workspace and get a clean environment with precisely those components that have been configured for the use case or context you …
Two colleagues wanted to try out Kubernetes and more specifically deployment of an application on Kubernetes that was not entirely trivial. One that consists of at least two Pods …
A conference such as Devoxx is a great opportunity to get inspired into trying out tools and technologies that may not or only be vaguely be known as they …
End of day two. So many topics already were presented, demonstrated, discussed, tried out to and by me. This article is just a very brief overview of what caught …
This article describes how you can run your very own Oracle Database from your browser using Gitpod. With a free account (50 hours Gitpod use per month), you can …
The challenge was as follows: provide a handson workshop environment – consisting of nothing more than a browser connected to our office’s Wifi network – for visitors to the …
Gitpod.io is a SaaS for software developers (that can also be used in self-hosted mode on Kubernetes). Gitpod makes workspaces available – typically based on a Git repository – …
Based on the fascinating Twitter thread by Philipp Salvisberg covering the presentation by Gerald Venzl at DOAG 2022 I would like to mention a few of the features that …
There are two public cloud. AWS and Azure. That is not actually the case – but that is how sometimes it may seem. A third cloud is frequently listed …
For the Open Day we organize shortly for our family, friends, neighbours and other interested parties, my colleagues create a custom web application to support our QR Scavenger Hunt …
Running “docker compose” in a VM on Oracle Cloud Infrastructure is perhaps not the ideal way to go – which probably would be OKE (Kubernetes) in order to benefit …
My challenge: replicate changes from database A to database B, once per day. The tables involved are pretty big (100M records). I really would not want to process them …
Front end development can be an art. An almost pixel by pixel design, a careful crafting UX or even CX. And there is a time and place and technology …
This article shows you can quickly get started with a free, managed PostgreSQL database with a table full of country data (using ElephantSQL). ElephantSQL is a hosted, managed PostgreSQL …
Supabase provides a cloud based backend service to web applications. That means that any (static) web application can use Supabase for user authentication and data persistence. Supabase provides a …
In our daily work we are dealing with data from many sources. Data in CSV files, from Cloud APIs, in mail servers, configuration files, Terraform plans, in logging systems, …
How hard can it be – to create the smallest possible container image to run a Go application? It is not hard to create a container image that contains …
Quite a few systems – business applications large and small – do not have support for WebHooks. That is: they do not offer the ability to register a URL …
An Oracle Wallet is an encrypted file that contains database credentials – username and password – for connecting to an Oracle Database. This avoids writing hard code user passwords …
Project Fn provides a framework for creating and running serverless functions. It is the foundation for the Functions service on Oracle Cloud Infrastructure. Dapr.io is an open source project …
Today is PI Day. March 14 or: 3-14 in the US. Of course it can be March 14th 2015 – 3-14-15 – only once but for some reason March …
It turned out to be a fairly small deal. For reference sake a brief write up of updating the Go runtime on my Ubuntu environment. Current version: go version …
I have been struggling a bit with this one: how to connect from a Go application to an Oracle Database – both a locally running database as well as …
Dapr is a runtime framework for distributed applications. Dapr also provides a personal assistant to any application and environment that offers standardized access to different facilities (state, secrets, configuration, …
I have worked quite a bit in Oracle Cloud, starting back in 2015. I have used many different OCI services – such as Integration, Streaming, Functions, OKE, API Gateway, …
In a recent article, I described the use of the OCI SDK for Go(Lang) – in my example to interact with the ObjectStorage service. In the article, I used …
Surely I would never be so stupid as to commit a file that contains sensitive information – say my Oracle Cloud account’s private key. And even if I did, …
I have used many open source products in my professional life. I have not studied the sources of many of these products and projects. My main contributions to the …
Dapr is a runtime framework for distributed applications as well as a personal assistant with many generic qualities relevant to any application. Through Dapr, applications can easily benefit from …
I am still fairly new at working with Go. I have the ambition of working with and perhaps even on several open source projects that all use Go as …
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 …
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 …
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 …
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 …
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 …
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 …
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 …