diff --git a/frontend/lib/redis.ts b/frontend/lib/redis.ts
index 960298b1..1a70050f 100644
--- a/frontend/lib/redis.ts
+++ b/frontend/lib/redis.ts
@@ -1,17 +1,25 @@
 import { Redis } from '@upstash/redis';
 
-import { getServerEnv } from '@/lib/env';
+import { readServerEnv } from '@/lib/env/server-env';
 
 let cachedRedis: Redis | null = null;
 
 export function getRedisClient() {
   if (cachedRedis) return cachedRedis;
 
-  const { UPSTASH_REDIS_REST_URL, UPSTASH_REDIS_REST_TOKEN } = getServerEnv();
+  const UPSTASH_REDIS_REST_URL = readServerEnv('UPSTASH_REDIS_REST_URL');
+  const UPSTASH_REDIS_REST_TOKEN = readServerEnv('UPSTASH_REDIS_REST_TOKEN');
+
   if (!UPSTASH_REDIS_REST_URL || !UPSTASH_REDIS_REST_TOKEN) {
     return null;
   }
 
+  try {
+    new URL(UPSTASH_REDIS_REST_URL);
+  } catch {
+    return null;
+  }
+
   cachedRedis = new Redis({
     url: UPSTASH_REDIS_REST_URL,
     token: UPSTASH_REDIS_REST_TOKEN,