A recent Wikibase email list post on the topic of Wikibase and bulk imports caused me to write up a mostly human readable version of what happens, in what order, and when, for Wikibase action API edits, for the specific case of item creation.

There are a fair few areas that could be improved and optimized for a bulk import use case in the existing APIs and code. Some of which are actively being worked on today (T285987). Some of which are on the roadmap, such as the new REST APIs for Wikibase. And others which are out there, waiting to be considered.

This post is is written looking at Wikibase and MediaWiki 1.36 with links to Github for code references. Same areas may be glossed over or even slightly inaccurate, so take everything here with a pinch of salt.

Reach out to me on Twitter if you have questions or fancy another deep dive.

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