Extract crate_downloads table
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Turbo87
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## main #8232 +/- ##
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Coverage 87.72% 87.73%
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LawnGnome
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Mar 4, 2024
eth3lbert
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Mar 4, 2024
eth3lbert
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Mar 4, 2024
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Should we expand the test data for crates and their versions to ensure we are updating the correct one?
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I guess that would generally make sense. Since that was already a problem with the existing code I don't want to conflate that with the purpose of this PR though :)
eth3lbert
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Mar 4, 2024
…wnloads` table too This is not removing the `crates` table update just yet, since we need to keep both tables in sync for now until the rest of the code is migrated to reading from the `crate_downloads` table instead.
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This PR is the first in a sequence of multiple PRs that move the
crates.downloadscolumn to a dedicated database table.Whenever we update the
crates.downloadscolumn a full new row is written by Postgres, which causes a lot of churn for the columns in this table that don't actually change that much. We've been seeing quite a few performance issues lately that are supposedly (partially) caused by this behavior.This PR adds a database migration which creates a new
crate_downloadstable, with a commented out query in the migration script to fill the table with the current values. The migration also adds an insert trigger on thecratestable to ensure a correspondingcrate_downloadsrow is automatically created for all newly inserted crates. Deletion of crates is automatically handled byon delete cascade.The PR also adjusts the
update_downloadsbackground job to update bothcrates.downloadsandcrate_downloads.downloadsfor now. We can remove thecrates.downloadsupdates once we switch the backend endpoint to read from thecrate_downloadstable instead.