Wikidata query service updater evolution
The Wikidata Query Service (WDQS) sits in front of Wikidata and provides access to query its data via a SPARQL API. The query service itself is built on top of Blazegraph, but in many regards is very similar to any other triple store that provides a SPARQL API. In the early days of the query…
Reducing Java JVM memory usage in Containers and on Kubernetes
For a while I have been running a Wikibase query service update script for WBStack, which is a Java application on a Kubernetes cluster. Part of that journey has included the updater using all available memory, hitting into the kubernetes memory limit and being OOM killed. The title of the post is a little verbose,…
WBStack 2020 Update 1
WBStack has now been up and running for 6 months. During that time it has helped 70 people create 178 MediaWiki installs running Wikibase, a SPARQL query service and quickstatements, all at the click of a button, with a total of around 200,000 edits across all sites. The most active site is currently virus-taxonomy.wiki.opencura.com which…