GraphQL + OWL: An “Ontologized” GraphQL Interface

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 […]

Identity Management with Keycloak

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

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.

URIs 303 redirection for the Semantic Web

uris 303

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

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?