Par2 size matching 100x faster; release bookkeeping once per statement
matchPar2Releases checked every same-size release_files row's set and date (18 s per batch of body-derived binaries); now an index on release_files (release_id, size) drops the repeated sizes first: 0.16 s. File inserts updated their release in four row triggers; one statement trigger now updates each release once per INSERT. Completeness is noted in release_dirty and recomputed by gc:scheduler every 30 minutes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Daan MeijerandClaude Opus 5.5 committed
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import { BaseSchema } from '@adonisjs/lucid/schema'
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/**
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* Cheaper release bookkeeping for file inserts (LOG.md 2026-10-06 (6)).
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*
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* Every inserted file fired four row triggers, each updating its release:
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* file_count/size, search_files, extensions and completeness, so a seed
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* batch of thousands of files rewrote its releases thousands of times (a
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* quarter of Postgres' active time on homelab). Now one statement-level
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* trigger updates each release once per INSERT, with all four.
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*
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* Completeness (D24), the expensive part, is no longer computed in triggers:
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* refresh_release_complete() only notes the release in release_dirty, and
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* gc:scheduler recomputes the noted releases every 30 minutes
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* (recompute_release_complete). Counts, sizes, search text and extensions
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* stay current: code decides on them right away (weak releases, deleting
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* empty releases).
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*
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* Also an index on release_files (release_id, size) for the par2 size
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* match's "listed once in its set" check (IngestService.matchPar2Releases).
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*/
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export default class extends BaseSchema {
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async up() {
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const q = (sql: string) => this.db.rawQuery(sql)
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// Swapping triggers locks files and its partitions: give up rather than queue every writer behind it.
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await q(`SET LOCAL lock_timeout = '2min'`)
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// Built CONCURRENTLY by hand on homelab (2026-10-06); IF NOT EXISTS keeps that one.
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await q(`CREATE INDEX IF NOT EXISTS release_files_release_size_idx ON release_files (release_id, size)`)
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// Append-only (no key): writers never wait on each other or on the sweep.
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await q(`CREATE TABLE IF NOT EXISTS release_dirty (release_id bigint NOT NULL)`)
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await q(`
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CREATE OR REPLACE FUNCTION recompute_release_complete(rid bigint) RETURNS void LANGUAGE sql AS $$
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UPDATE releases r SET complete = c.complete
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FROM (SELECT release_complete(rid) AS complete) c
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WHERE r.id = rid AND r.complete IS DISTINCT FROM c.complete
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$$`)
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// Every trigger that called this (files, release_files, binaries.size, releases.file_total) now just notes the release.
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await q(`
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CREATE OR REPLACE FUNCTION refresh_release_complete(rid bigint) RETURNS void LANGUAGE sql AS $$
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INSERT INTO release_dirty (release_id) SELECT rid WHERE rid IS NOT NULL
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$$`)
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await q(`
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CREATE OR REPLACE FUNCTION files_release_insert_statement() RETURNS trigger LANGUAGE plpgsql AS $$
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BEGIN
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WITH added AS (
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SELECT release_id, count(*) AS n, coalesce(sum(size), 0) AS bytes,
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array_agg(DISTINCT e) FILTER (WHERE length(e) BETWEEN 2 AND 4) AS exts,
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array_agg(DISTINCT w) FILTER (WHERE w <> '') AS words
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FROM (
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SELECT release_id, size, name_extension(nm) AS e,
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CASE WHEN is_readable_name(nm) THEN search_normalize(name_stem(nm)) END AS w
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FROM (SELECT release_id, size, coalesce(real_name, filename) AS nm FROM new_rows WHERE release_id IS NOT NULL) f
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) x
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GROUP BY release_id
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)
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UPDATE releases r SET
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file_count = r.file_count + a.n,
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size = r.size + a.bytes,
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extensions = CASE
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WHEN a.exts IS NULL OR coalesce(r.extensions, '{}') @> a.exts THEN r.extensions
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ELSE array(SELECT DISTINCT x FROM unnest(coalesce(r.extensions, '{}') || a.exts) x ORDER BY x) END,
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search_files = CASE
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WHEN a.words IS NULL OR length(coalesce(r.search_files, '')) >= 4000 THEN r.search_files
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ELSE nullif(left(concat_ws(' ', r.search_files, (
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SELECT string_agg(w, ' ') FROM unnest(a.words) w
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WHERE position(w IN coalesce(r.search_text, search_normalize(r.name))) = 0)), 4000), '') END
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FROM added a
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WHERE r.id = a.release_id;
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INSERT INTO release_dirty (release_id) SELECT DISTINCT release_id FROM new_rows WHERE release_id IS NOT NULL;
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RETURN NULL;
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END $$`)
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// The row triggers keep UPDATE and DELETE (renames, moves between releases); INSERT is the statement trigger.
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for (const name of ['files_release_extension', 'files_release_search', 'files_release_totals', 'files_zz_release_complete']) {
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await q(`DROP TRIGGER IF EXISTS ${name} ON files`)
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}
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await q(`CREATE TRIGGER files_release_extension AFTER UPDATE OF release_id, filename, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_extension()`)
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await q(`CREATE TRIGGER files_release_search AFTER UPDATE OF release_id, filename, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_search()`)
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await q(`CREATE TRIGGER files_release_totals AFTER DELETE OR UPDATE OF release_id, size ON files FOR EACH ROW EXECUTE FUNCTION files_release_totals()`)
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await q(`CREATE TRIGGER files_zz_release_complete AFTER DELETE OR UPDATE OF release_id, size, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_complete()`)
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await q(`CREATE TRIGGER files_release_insert AFTER INSERT ON files REFERENCING NEW TABLE AS new_rows FOR EACH STATEMENT EXECUTE FUNCTION files_release_insert_statement()`)
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}
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async down() {
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const q = (sql: string) => this.db.rawQuery(sql)
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await q(`DROP TRIGGER IF EXISTS files_release_insert ON files`)
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for (const name of ['files_release_extension', 'files_release_search', 'files_release_totals', 'files_zz_release_complete']) {
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await q(`DROP TRIGGER IF EXISTS ${name} ON files`)
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}
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await q(`CREATE TRIGGER files_release_extension AFTER INSERT OR UPDATE OF release_id, filename, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_extension()`)
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await q(`CREATE TRIGGER files_release_search AFTER INSERT OR UPDATE OF release_id, filename, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_search()`)
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await q(`CREATE TRIGGER files_release_totals AFTER INSERT OR DELETE OR UPDATE OF release_id, size ON files FOR EACH ROW EXECUTE FUNCTION files_release_totals()`)
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await q(`CREATE TRIGGER files_zz_release_complete AFTER INSERT OR DELETE OR UPDATE OF release_id, size, real_name ON files FOR EACH ROW EXECUTE FUNCTION files_release_complete()`)
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await q(`DROP FUNCTION IF EXISTS files_release_insert_statement()`)
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await q(`
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CREATE OR REPLACE FUNCTION refresh_release_complete(rid bigint) RETURNS void LANGUAGE sql AS $$
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UPDATE releases r SET complete = c.complete
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FROM (SELECT release_complete(rid) AS complete) c
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WHERE r.id = rid AND r.complete IS DISTINCT FROM c.complete
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$$`)
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await q(`DROP FUNCTION IF EXISTS recompute_release_complete(bigint)`)
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await q(`DROP TABLE IF EXISTS release_dirty`)
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}
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}
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