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re-analyze all tables affected by new indexes

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Hazelnoot 2025-05-25 12:51:00 -04:00
parent 12c2bbc7de
commit 070084889f
2 changed files with 25 additions and 4 deletions
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4
packages/backend/migration/1748104955717-index_IDX_instance_host_key.js
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@ -8,10 +8,6 @@ export class IndexIDXInstanceHostKey1748104955717 {
async up(queryRunner) {
await queryRunner.query(`CREATE UNIQUE INDEX "IDX_instance_host_key" ON "instance" (((lower(reverse("host")) || '.')::text) text_pattern_ops)`);
// Flush all cached Linear Scan Plans and redo statistics for expression index
// this is important for Postgres to learn that even in highly complex queries, using this index first can reduce the result set significantly
await queryRunner.query(`ANALYZE "instance"`);
}
async down(queryRunner) {

25
packages/backend/migration/1748191631151-analyze_instance-user-note-following.js Normal file
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@ -0,0 +1,25 @@
/*
* SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
/**
* @typedef {import('typeorm').MigrationInterface} MigrationInterface
*/
/**
* @class
* @implements {MigrationInterface}
*/
export class AnalyzeInstanceUserNoteFollowing1748191631151 {
name = 'AnalyzeInstanceUserNoteFollowing1748191631151'
async up(queryRunner) {
// Refresh statistics for tables impacted by new indexes.
// This helps the query planner to efficiently use them without waiting for the next full vacuum.
await queryRunner.query(`ANALYZE "instance", "user", "following", "note"`);
}
async down(queryRunner) {
}
}