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fix(api): eliminate idle Postgres I/O on self-hosted instances (#1593)

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Hampus authored and GitHub committed 2026-08-14 19:55:53 +02:00
1 parent 8a9b12e6a1
commit beb906753f
19 files changed
+80 -268
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fluxer_api/src/api/database/PostgresKvQueryExecutor.ts
+13 -13
View File
@@ -561,14 +561,14 @@ WHERE NOT $6`,
private async patch(meta: KvQueryMeta, params: CassandraParams, db: PostgresQueryable): Promise<void> {
const key = rowKeyFromParams(meta, params);
const existing = await this.getRow(meta, key, db);
const base = existing ?? paramsRow(params, (meta.pkColumns ?? meta.table.primaryKey) as ReadonlyArray<string>);
const stored = await this.getStoredRow(meta, key, db);
const base = stored?.row ?? paramsRow(params, (meta.pkColumns ?? meta.table.primaryKey) as ReadonlyArray<string>);
const next = {...base};
for (const column of meta.patchKeys ?? []) {
next[column] = column in params ? params[column] : null;
}
const ttl = ttlExpiresAt(meta, params);
const expiresAt = ttl === undefined ? await this.getExpiresAt(meta, key, db) : ttl;
const expiresAt = ttl === undefined ? (stored?.expiresAt ?? null) : ttl;
await db.query(
`INSERT INTO ${this.table} (table_name, partition_key, row_key, row_data, expires_at, updated_at)
VALUES ($1, $2, $3, $4::jsonb, $5, now())
@@ -592,20 +592,20 @@ DO UPDATE SET partition_key = EXCLUDED.partition_key, row_data = EXCLUDED.row_da
]);
}
private async getRow(meta: KvQueryMeta, key: string, db: PostgresQueryable): Promise<Row | null> {
const result = await db.query<StoredRow>(
`SELECT row_key, row_data FROM ${this.table} WHERE table_name = $1 AND row_key = $2 AND (expires_at IS NULL OR expires_at > now()) LIMIT 1`,
private async getStoredRow(
meta: KvQueryMeta,
key: string,
db: PostgresQueryable,
): Promise<{row: Row; expiresAt: Date | null} | null> {
const result = await db.query<StoredRow & {expires_at: Date | null}>(
`SELECT row_key, row_data, expires_at FROM ${this.table} WHERE table_name = $1 AND row_key = $2 AND (expires_at IS NULL OR expires_at > now()) LIMIT 1`,
[meta.table.name, key],
);
const row = result.rows[0];
return row ? decodeRow(row.row_data) : null;
return row ? {row: decodeRow(row.row_data), expiresAt: row.expires_at ?? null} : null;
}
private async getExpiresAt(meta: KvQueryMeta, key: string, db: PostgresQueryable): Promise<Date | null> {
const result = await db.query<{expires_at: Date | null}>(
`SELECT expires_at FROM ${this.table} WHERE table_name = $1 AND row_key = $2 AND (expires_at IS NULL OR expires_at > now()) LIMIT 1`,
[meta.table.name, key],
);
return result.rows[0]?.expires_at ?? null;
private async getRow(meta: KvQueryMeta, key: string, db: PostgresQueryable): Promise<Row | null> {
return (await this.getStoredRow(meta, key, db))?.row ?? null;
}
}