File:Wdqs-components.png

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Summary

Component diagram of Wikidata Query Service and its main dependencies

@startuml

actor user

() "SPARQL\nendpoint" as sparql
node wdqs {
  database "wdqs-blazegraph" as blazegraph
  [wdqs-updater] as updater
}
database "Kafka main" as kafka
[Wikidata] as wikidata
() "Recent Changes" as rc

node "external services" as ext {
  () "http://dbpedia.org/sparql" as dbpedia
  () "http://sparql.europeana.eu/" as europeana
  () "http://sparql.wikipathways.org/" as wikipathways
  () "..." as others
}

note bottom of ext
  external services
  are whitelisted
  and accessed through
  an HTTP proxy
end note

user .> sparql

sparql -- blazegraph

updater .> blazegraph: updates

updater .down.> wikidata: retrieve\nfull changes
updater .up.> kafka: subscribe\nto updates
updater .up.> rc: subscribe\nto updates

note right of rc
  Depending on configuration
  either Kafka or Recent
  Changes is used as a source
  of changes.
end note


blazegraph ..> dbpedia: <<federates>>
blazegraph ..> europeana: <<federates>>
blazegraph ..> wikipathways: <<federates>>
blazegraph ..> others: <<federates>>

@enduml

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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:37, 10 July 2018		1,177 × 615 (50 KB)	Gehel (talk \| contribs)	cleanup, adding user
	13:27, 10 July 2018		1,144 × 600 (48 KB)	Gehel (talk \| contribs)	Component diagram of Wikidata Query Service and its main dependencies <code> @startuml () "SPARQL\nendpoint" as sparql node wdqs { database "wdqs-blazegraph" as blazegraph [wdqs-updater] as updater } database "Kafka main" as kafka [Wikidata] as wikidata () "Recent Changes" as rc node "external services" as ext { () "http://dbpedia.org/sparql" as dbpedia () "http://sparql.europeana.eu/" as europeana () "http://sparql.wikipathways.org/" as wikipathways () "..." as others } note ...

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File usage

The following page uses this file:

Wikidata Query Service/Runbook