GraphQL + OWL: An “Ontologized” GraphQL Interface

Introduction This article describes a proposal for a GraphQL OWL-compliant interface, including queries and mutations. Instead of dealing with abstract OWL concepts, we reference a popular ontology, BIBFRAME, used in structuring bibliographic descriptions. We will go through a brief synthetic overview of GraphQL and BIBFRAME and then describe the proposal. Note the article has nothing to do […]
Spin Up An Apache Spark Cluster: Howto In 5 Minutes

This flash tip aims to provide the reader with the information required for spinning up an Apache Spark cluster
Spring Boot, GraphQL, TestContainers, PostgreSQL: Minimal Setup

This tip provides a minimalistic quickstart code for setting up a module using Spring Boot, GraphQL, PostgreSQL, and TestContainers.
Identity Management with Keycloak

In this article we’ll present what Keycloak can do and why it can be considered the Swiss army knife for almost any identity management needs.
GraphQL Custom Directives

Within this article we will explore how to implement custom GraphQL directives to protect content from exposure through your API.
Indexing At Scale

This article describes a design of a mediation layer that implements a hybrid search API through GraphQL.
A GraphQL Mediator For Implementing A Hybrid Search API Layer

This article describes a design of a mediation layer that implements a hybrid search API through GraphQL.
GraphQL, REST: Take the Best of Both

Lessons learned, thoughts, about GraphQL and REST, the two most popular API paradigms
URIs 303 redirection for the Semantic Web

The Semantic Web was envisioned by Tim Berners-Lee as a Web made of data that machines could process.
In this article we are going to see how to use URI’s 303 Redirection to make resources available to machines and humans.
Spark SQL: Partitions and Sizes

Data fetching parallelisation in Apache Spark through Spark SQL / JDBC.
PartitionColumn, lowerBound, upperBound, numPartitions and a lot of other parameters: how do they work?