feat: move from upstash to redis

utils/redis.ts

@@ -1,18 +1,11 @@
-import { Redis } from '@upstash/redis';
+import Redis from 'ioredis';
 
-if (!process.env.KV_REST_API_URL) {
-  throw new Error('KV_REST_API_URL is not defined');
-}
-
-if (!process.env.KV_REST_API_TOKEN) {
-  throw new Error('KV_REST_API_TOKEN is not defined');
-}
+const redisHost = process.env.REDIS_HOST || 'localhost';
+const redisPort = parseInt(process.env.REDIS_PORT || '6379', 10);
 
 export const redis = new Redis({
-  url: process.env.KV_REST_API_URL,
-  token: process.env.KV_REST_API_TOKEN,
-  retry: {
-    retries: 3,
-    backoff: (retryCount) => Math.min(retryCount * 100, 3000),
-  },
+  host: redisHost,
+  port: redisPort,
+  maxRetriesPerRequest: 3,
+  retryStrategy: (times) => Math.min(times * 100, 3000),
 });