Indexing At Scale

INDEXING AT SCALE

This article describes a design of a mediation layer that implements a hybrid search API through GraphQL.

Apache Solr Atomic Updates: a Polymorphic Approach

Apache Solr Atomic Updates: a Polymorphic Approach

In this post we describe an approach to solve the problem of an application that requires both Full and Atomic Updates, using one of the powerful concepts in Object Oriented Programming: Polymorphism.

Towards a scalable Solr-based RDF Store

Towards a scalable Solr-based RDF Store

SolRDF (i.e., Solr + RDF) is a set of Solr extensions for managing (indexing and searching) RDF data. In a preceding post, I described how to set up a standalone SolRDF instance in two minutes; in this post, I’ll describe how to run SolRDF in a simple cluster. The required steps are similar to what […]

RDF in Solr: HowTo

RDF in Solr: HowTo

The Solr built-in UpdateRequestHandler supports several formats of input data. It delegates the actual data loading to a specific ContentStreamLoader, depending on the content type of the incoming request (i.e., the Content-type header of the HTTP request). Currently, these are the available content types declared in the UpdateRequestHandler class: application/xml or text/xml application/json or text/json application/csv or text/csv application/javabin So, a client has several options […]