fix: performance related fixes

packages/geo/package.json

@@ -7,14 +7,15 @@
     "codegen": "jiti scripts/download.ts"
   },
   "dependencies": {
-    "@maxmind/geoip2-node": "^6.1.0"
+    "@maxmind/geoip2-node": "^6.1.0",
+    "lru-cache": "^11.2.2"
   },
   "devDependencies": {
     "@openpanel/tsconfig": "workspace:*",
     "@types/node": "catalog:",
     "fast-extract": "^1.4.3",
+    "jiti": "^2.4.1",
     "tar": "^7.4.3",
-    "typescript": "catalog:",
-    "jiti": "^2.4.1"
+    "typescript": "catalog:"
   }
 }

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);
   }