yiekheng
17f9ee179f
- Add cacheEntries and rateLimitBuckets tables to schema - Generate migration 0002_left_jimmy_woo.sql with pg_trgm extension and all indexes - Implement cache.ts (get/set/delete/getOrSet/sweep) backed by Postgres - Implement rate-limit.ts (sliding-window UPSERT) backed by Postgres - Implement search.ts (trigramMatch / trigramRank helpers) - Add vitest 2.1.9 + vitest.config.ts; 7 unit tests pass (4 cache + 3 rate-limit) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
23 lines
792 B
TypeScript
23 lines
792 B
TypeScript
import "server-only";
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import { sql, type SQL } from "drizzle-orm";
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/**
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* Build a Drizzle WHERE fragment that fuzzy-matches `column` against `query`
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* using pg_trgm's similarity operator. Returns `true` (no filter) when query is
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* empty so callers can compose unconditionally.
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*
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* Caller must ensure a `gin_trgm_ops` index exists on the column.
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*/
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export function trigramMatch(column: SQL, query: string | null | undefined): SQL {
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const q = (query ?? "").trim();
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if (!q) return sql`true`;
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return sql`${column} % ${q}`;
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}
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/** Order-by fragment that ranks rows by similarity descending. */
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export function trigramRank(column: SQL, query: string | null | undefined): SQL {
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const q = (query ?? "").trim();
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if (!q) return sql`1`;
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return sql`similarity(${column}, ${q}) DESC`;
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}
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