0 Somewhat Stateful Serverless Functions on Oracle Cloud Infrastructure – Implementing a DIY Cache
We call them serverless and we consider them stateless. Functions on Oracle Cloud Infrastructure (and on other cloud platforms). Of…
Author Lucas Jellema
Lucas Jellema
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.
0 JavaScript: Mapping and Wrapping Classic Callback Functions to Promises and Async / Await
Callback functions used to be very common in JavaScript and Node applications. Out of necessity. And with Callback functions came…
0 Asynchronous Function Calls through API Gateway on Oracle Cloud Infrastructure
In a recent article, I described how serverless Functions on Oracle Cloud Infrastructure can invoke each other: synchronously and asynchronously.…
0 OCI Serverless Functions invoking other Functions – synchronous and asynchronously through API Gateway and Streaming
OCI allows for cloud native application development, using facilities such as serverless functions, a light weight API gateway, a streaming…
0 Using OCI Monitoring Healthchecks to Schedule execution of Serverless Functions on Oracle Cloud Infrastructure
Execution of scheduled jobs based on a time schedule is a frequent requirement. Jobs on Oracle Cloud Infrastructure are often…
0 Oracle Cloud Streaming Service – Scalable, Reliable, Kafka-like Event service on OCI
Oracle Cloud Infrastructure offers the Streaming service. This service is easily described as a Kafka-like fully managed event platform for…
0 Deprecated: (!First Steps) with Oracle Cloud’s Pub/Sub Service: Oracle Messaging Cloud Service
Fire and forget messaging is a powerful concept. Asynchronous, decoupled communication is key to scalability and independence of services. Oracle…
0 Publish Oracle Function for Reading and Writing Object Storage Files through OCI API Gateway
The objective for this article is to show you how to get to the point where two routes are available…
0 Oracle Cloud Infrastructure – Leveraging API Gateway as Read Only Cache from serverless Function
This article demonstrates a set up that is probably mainly of theoretical interest or maybe useful in demonstrations. I describe…
0 Oracle Cloud API Gateway – Using an Authorizer Function for Client Secret Authorization on API Access
The objective in this article: create a simple Authorizer Function that checks the Client Secret passed in API calls and…
0 Oracle Cloud Infrastructure Functions and Project Fn – Retrieving Headers, Query Parameters and other HTTP Request elements
Functions on Oracle Cloud Infrastructure are implemented using Project Fn. A function runs in Docker container. This container has a…
0 Oracle Cloud Serverless Functions unleashed: exposing OCI Functions through API Gateway
Oracle Cloud Infrastructure API Gateway makes it possible to expose OCI Functions on public endpoints that do not require complex…
2 Scheduling Oracle Cloud Function execution
Functions on Oracle Cloud are an important element in any cloud native application architectures. Functions are typically small, well contained…
1 Override Date.now() based on OS time when Node returns incorrect current date
I was facing a weird issue. In my Node application – version 10.6.3 – running on Ubuntu – 18.04 -…
0 My Quick Start with Oracle Functions in Fresh OCI Tenancy
This article is fairly rough log of the steps I went through to get going on Oracle Cloud Serverless Functions.…
0 My first steps with Oracle Cloud API Gateway – the stock response
The API Gateway service on Oracle Cloud Infrastructure went live very recently – read my overview article of what API…
0 Introducing Oracle Cloud API Gateway – the light weight public or private router to public and private OCI endpoints
Two days ago, the API Gateway service on Oracle Cloud Infrastructure went live – read the announcement. This is a…
2 Linux Shell Script – passing arguments to functions and returning and capturing results
Developing Linux Shell Scripts is just not the same as programming in modern programming language. At least to me, it…
2 Resolving issue: Oracle Virtual Box 6.0.14 and Windows 10 – Call to WHvSetupPartition failed VERR_NEM_VM_CREATE_FAILED
Like so many colleagues and fellow developers around the world, the latest Windows Update also messed up my machine’s ability…
0 Ultra fast, ultra small Kubernetes on Linux – K3S beating minikube
The easiest way I knew for running a local Kubernetes cluster was minikube. It installs like a breeze and creates…