fix: performance related fixes

packages/geo/src/geo.ts

@@ -7,6 +7,7 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 import type { ReaderModel } from '@maxmind/geoip2-node';
 import { Reader } from '@maxmind/geoip2-node';
+import { LRUCache } from 'lru-cache';
 
 const filename = 'GeoLite2-City.mmdb';
 // From api or worker package
@@ -50,11 +51,22 @@ const DEFAULT_GEO: GeoLocation = {
 
 const ignore = ['127.0.0.1', '::1'];
 
+const cache = new LRUCache<string, GeoLocation>({
+  max: 1000,
+  ttl: 1000 * 60 * 5,
+  ttlAutopurge: true,
+});
+
 export async function getGeoLocation(ip?: string): Promise<GeoLocation> {
   if (!ip || ignore.includes(ip)) {
     return DEFAULT_GEO;
   }
 
+  const cached = cache.get(ip);
+  if (cached) {
+    return cached;
+  }
+
   if (!reader) {
     await loadDatabase(dbPath);
   }