perf(mongodb): do not block the document list on countDocuments (#876) - #969
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ZhuchkaTriplesix merged 1 commit intoSep 25, 2026
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#876) MongoDocumentsView._load awaited a full count command before the bounded find, so first paint waited on both round trips and on a collection or filter scan. Paint the first page from find alone and run the count in the background. A short page (or an empty first page) pins the total without any count; while it is pending the footer shows 'N+ documents' and Next is enabled when the page is full. Page navigation reuses the known total, and a sequence number drops responses from superseded loads. A failed count leaves the maybe-more pagination instead of failing the list.
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MongoDocumentsView._loadбольше не ждётcountпередfind: первая страница рисуется сразу послеfind, точный счёт считается в фоне (_loadCount).count:skip + длина страницы. Запрос счёта в этом случае не отправляется.N+ documentsи1 / ?, а Next доступен, когда страница полная (подход «page full ⇒ maybe more», как в SQLite browse).countнет. Фильтр, Refresh, вставка и удаление пересчитывают._loadSeqотбрасывает ответы устаревших загрузок (быстрая смена фильтра или страницы). Ошибкаcountне роняет список, остаётся «maybe more».mongoExactTotalFromPageиmongoHasNextPage, покрытыmongo_documents_paging_test(6 тестов). Этот файл иmongo_field_list_perf_testпрогнал локально, все 8 проходят.Не входит
findбезlimit, как в issue.countна$collStats/ estimated count: точный счёт остаётся, но после первой отрисовки.MongoServiceсинглтон без подмены, поэтому логика вынесена в чистые функции.Связанные Issue
Closes #876