diff --git a/lib/proxy.mjs b/lib/proxy.mjs
index 49ebbd8..48c02e8 100755
--- a/lib/proxy.mjs
+++ b/lib/proxy.mjs
@@ -12,6 +12,9 @@ import cluster from 'cluster';
 import hash from 'object-hash';
 import safe from 'safetimeout';
 import * as letsencrypt from './letsencrypt.mjs';
+import { LRUCache } from 'lru-cache';
+
+const routeCache = new LRUCache({ max: 5000 });
 
 import tls from 'tls';
 
diff --git a/package.json b/package.json
index fa488dd..6f2a385 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,7 @@
     "le-challenge-fs": "^2.0.9",
     "le-store-certbot": "^2.2.3",
     "lodash": "^4.17.15",
+    "lru-cache": "^11.0.1",
     "node-etcd": "^7.0.0",
     "object-hash": "^1.3.1",
     "pino": "^9.4.0",
diff --git a/yarn.lock b/yarn.lock
index 3e30a39..3c36000 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1971,6 +1971,11 @@ lru-cache@2:
   resolved "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz"
   integrity sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=
 
+lru-cache@^11.0.1:
+  version "11.0.1"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-11.0.1.tgz#3a732fbfedb82c5ba7bca6564ad3f42afcb6e147"
+  integrity sha512-CgeuL5uom6j/ZVrg7G/+1IXqRY8JXX4Hghfy5YE0EhoYQWvndP1kufu58cmZLNIDKnRhZrXfdS9urVWx98AipQ==
+
 magic-string@^0.30.10:
   version "0.30.11"
   resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.30.11.tgz#301a6f93b3e8c2cb13ac1a7a673492c0dfd12954"