feat: 增加内存存储

.env.example

@@ -23,6 +23,9 @@ ENABLE_GZIP=true
 DATABASE_DSN=user:password@tcp(localhost:3306)/gpt_load?charset=utf8mb4&parseTime=True&loc=Local
 DB_AUTO_MIGRATE=true
 
+# Redis配置
+REDIS_DSN=redis://:password@localhost:6379/2
+
 # 日志配置
 LOG_LEVEL=info
 LOG_FORMAT=text