Create storage/cache.js

storage/cache.js

@@ -0,0 +1,22 @@
+const cache = {};
+
+function set(key, value, ttl = 5000) {
+  cache[key] = {
+    value,
+    expiry: Date.now() + ttl
+  };
+}
+
+function get(key) {
+  const item = cache[key];
+  if (!item) return null;
+
+  if (Date.now() > item.expiry) {
+    delete cache[key];
+    return null;
+  }
+
+  return item.value;
+}
+
+module.exports = { set, get };