codinget
26c5b4eb9a
The incremental importer was measured at 24.72 min wall / 186s user time for rockyou (14.3M rows), and Postgres logs showed checkpoints firing every ~22s due to WAL pressure from random-order B-tree maintenance and full-page-write amplification. bulkImport.ts (`npm run import:bulk`) avoids all of that: - Loads raw rows via COPY into a TEMP staging table (no WAL, no index). - Merges with the existing table's contents into a fresh, unindexed shadow table via one INSERT ... SELECT ... GROUP BY. - Adds the primary key and prefix index only after the table is populated, so Postgres builds them via a single sorted bulk pass instead of 14M random-order incremental inserts. - Swaps the shadow table into place at the end. - The entire run is one transaction: since pwned_passwords_new doesn't exist outside that transaction, Postgres skips WAL-logging its data entirely, and any failure rolls back to the exact starting state instead of leaving a half-migrated table. - Wordlist hashing runs across a worker_threads pool (--jobs, shared resolveWorkerUrl helper with the incremental importer's hashWorker) instead of blocking the single thread that also drives the COPY stream. - Each phase (hash+copy, merge, reindex, swap) reports its own wall time. Net effect measured against the same rockyou file/DB: 42 min -> 24.72 min (fsync fix) -> ~7.3 min (WAL-skip transaction) -> 186.17s (parallel hashing).
24 lines
691 B
JSON
24 lines
691 B
JSON
{
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"name": "import",
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"version": "1.0.0",
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"description": "Bulk-loads a wordlist or hash list into the pwned_passwords table",
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"type": "module",
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"main": "dist/index.js",
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"scripts": {
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"start": "tsx --env-file=../../.env.local src/index.ts",
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"import-hibp": "tsx --env-file=../../.env.local src/importHibp.ts",
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"bulk-import": "tsx --env-file=../../.env.local src/bulkImport.ts",
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"build": "tsc -p tsconfig.json",
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"license": "ISC",
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"dependencies": {
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"pg": "^8.22.0",
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"pg-copy-streams": "^7.0.0"
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},
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"devDependencies": {
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"@types/pg": "^8.20.0",
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"@types/pg-copy-streams": "^1.2.5"
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}
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}
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