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[chore/performance] Avoid unnecessary "uncached" queries (#3265)

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* [chore/performance] Avoid unnecessary "uncached" queries

* go fmt
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tobi 2024-09-02 14:00:17 +02:00 • committed by GitHub
commit 25a815a8a4
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17 changed files with 149 additions and 21 deletions
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9
internal/db/bundb/media.go
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@ -57,8 +57,15 @@ func (m *mediaDB) GetAttachmentsByIDs(ctx context.Context, ids []string) ([]*gts
media, err := m.state.Caches.DB.Media.LoadIDs("ID",
ids,
func(uncached []string) ([]*gtsmodel.MediaAttachment, error) {
// Avoid querying
// if none uncached.
count := len(uncached)
if count == 0 {
return nil, nil
}
// Preallocate expected length of uncached media attachments.
media := make([]*gtsmodel.MediaAttachment, 0, len(uncached))
media := make([]*gtsmodel.MediaAttachment, 0, count)
// Perform database query scanning
// the remaining (uncached) IDs.