diff --git a/BE/src/common/redis/redis.domain-service.ts b/BE/src/common/redis/redis.domain-service.ts
index 39fa2d5..27d212d 100644
--- a/BE/src/common/redis/redis.domain-service.ts
+++ b/BE/src/common/redis/redis.domain-service.ts
@@ -1,14 +1,19 @@
-import { Injectable, Inject } from '@nestjs/common';
+import { Injectable, Inject, OnModuleInit } from '@nestjs/common';
 import Redis from 'ioredis';
 
 @Injectable()
-export class RedisDomainService {
+export class RedisDomainService implements OnModuleInit {
   constructor(
     @Inject('REDIS_CLIENT') private readonly redis: Redis,
     @Inject('REDIS_PUBLISHER') private readonly publisher: Redis,
     @Inject('REDIS_SUBSCRIBER') private readonly subscriber: Redis,
   ) {}
 
+  async onModuleInit() {
+    const keys = await this.redis.keys('connections:*');
+    if (keys.length > 0) await this.redis.del(keys);
+  }
+
   async exists(key: string): Promise<number> {
     return this.redis.exists(key);
   }
@@ -82,11 +87,27 @@ export class RedisDomainService {
     return this.subscriber.unsubscribe(channel);
   }
 
+  async setConnection(key: string, value: number) {
+    return this.redis.set(`connections:${key}`, value);
+  }
+
+  async getConnection(key: string): Promise<number> {
+    return Number(await this.redis.get(`connections:${key}`));
+  }
+
+  async delConnection(key: string) {
+    return this.redis.del(`connections:${key}`);
+  }
+
+  async existsConnection(key: string) {
+    return this.redis.exists(`connections:${key}`);
+  }
+
   async increment(key: string) {
-    return this.redis.incr(key);
+    return this.redis.incr(`connections:${key}`);
   }
 
   async decrement(key: string) {
-    return this.redis.decr(key);
+    return this.redis.decr(`connections:${key}`);
   }
 }
diff --git a/BE/src/stockSocket/stock-price-socket.service.ts b/BE/src/stockSocket/stock-price-socket.service.ts
index 8897ea1..7da6b40 100644
--- a/BE/src/stockSocket/stock-price-socket.service.ts
+++ b/BE/src/stockSocket/stock-price-socket.service.ts
@@ -69,11 +69,11 @@ export class StockPriceSocketService extends BaseStockSocketDomainService {
 
   async subscribeByCode(trKey: string) {
     // 아무 서버도 한투와 구독 중이지 않을때
-    if (!(await this.redisDomainService.exists(trKey))) {
+    if (!(await this.redisDomainService.existsConnection(trKey))) {
       this.baseSocketDomainService.registerCode(this.TR_ID, trKey);
       await this.redisDomainService.subscribe(`stock/${trKey}`);
       this.register.push(trKey);
-      await this.redisDomainService.set(trKey, 1);
+      await this.redisDomainService.setConnection(trKey, 1);
       this.connection[trKey] = 1;
 
       return;
@@ -113,8 +113,8 @@ export class StockPriceSocketService extends BaseStockSocketDomainService {
       }
 
       // 레디스 내에서 모든 연결이 종료됐을 경우
-      if ((await this.redisDomainService.get(trKey)) === 0) {
-        await this.redisDomainService.del(trKey);
+      if ((await this.redisDomainService.getConnection(trKey)) === 0) {
+        await this.redisDomainService.delConnection(trKey);
       }
     }
   }
@@ -122,7 +122,7 @@ export class StockPriceSocketService extends BaseStockSocketDomainService {
   @Cron('*/5 * * * *')
   async checkConnection() {
     for (const trKey of this.register) {
-      if (!(await this.redisDomainService.exists(trKey))) {
+      if (!(await this.redisDomainService.existsConnection(trKey))) {
         this.baseSocketDomainService.unregisterCode(this.TR_ID, trKey);
         const idx = this.register.indexOf(trKey);
         if (idx) this.register.splice(idx, 1);