# Deployment View
# Wikidata.org
Wikidata.org is the largest deployment of the Query Service.
It makes use of the Streaming Updater, and runs on multiple servers, in multiple distinct groups, in multiple data centres hosted by the Wikimedia Foundation.
Canonical documentation:
- Wikidata Query Service deployment page (opens new window)
- Wikimedia Event Platform (opens new window)
# Multi Cluster
# Single Host
Each server in this setup runs the Streaming Updater Consumer, getting a stream of RDF changes from Kafka, that have been created by a single Streaming Updater Producer.
# User Interfaces
User Interfaces are deployed to Microsites (opens new window) infrastructure.
Wikitech documentation exists for this deployment (opens new window).
The application is built by Jenkins and committed to a new Git repository, which is then deployed ot Microsites.
# Wikibase Docker
Wikibase docker releases, and the suggested 3rd party deployments make use of the older Recent Changes based updater.
Containers can be deployed in any number of ways.
The docker-compose example would result in these containers all being within the same host machine.
# Wikibase as a Service
Wikibase as a service uses custom services to fullful some specific needs for its deployment of the Query Service.
Most notably the query-gateway and custom query-updater.
Canonical documentation:
