How are topic IDs generated?

support
1

Are they created following a simple arithmetic pattern? Also, are they based for the entirety of an instance, or only personal accounts? I’m using the API and seeing some inconsistencies.

2

It’s a PostgreSQL sequence. It increases +1 for every new topic.

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3

Thanks for the quick response! Are they unique values across the entire Discourse instance or are they based on each individual user?

4

They’re unique across the whole instance.

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