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7a41cfe28b
* enhance(backend): use composite index for ordering notes by user Signed-off-by: eternal-flame-AD <yume@yumechi.jp> * fixup! enhance(backend): use composite index for ordering notes by user --------- Signed-off-by: eternal-flame-AD <yume@yumechi.jp>
21 lines
907 B
JavaScript
21 lines
907 B
JavaScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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export class CompositeNoteIndex1745378064470 {
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name = 'CompositeNoteIndex1745378064470';
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async up(queryRunner) {
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await queryRunner.query(`CREATE INDEX "IDX_724b311e6f883751f261ebe378" ON "note" ("userId", "id" DESC)`);
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await queryRunner.query(`DROP INDEX IF EXISTS "IDX_5b87d9d19127bd5d92026017a7"`);
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// Flush all cached Linear Scan Plans and redo statistics for composite index
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// this is important for Postgres to learn that even in highly complex queries, using this index first can reduce the result set significantly
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await queryRunner.query(`ANALYZE "user", "note"`);
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}
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async down(queryRunner) {
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await queryRunner.query(`DROP INDEX IF EXISTS "IDX_724b311e6f883751f261ebe378"`);
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await queryRunner.query(`CREATE INDEX "IDX_5b87d9d19127bd5d92026017a7" ON "note" ("userId")`);
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}
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}
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