From 8ef267b8c4746ede165f2558e3580b7992800380 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:08:12 +0900
Subject: [PATCH 1/6] =?UTF-8?q?Feat:=20build.gradle=EC=97=90=20=EB=A0=88?=
 =?UTF-8?q?=EB=94=94=EC=8A=A4=20=EC=9D=98=EC=A1=B4=EC=84=B1=20=EC=B6=94?=
 =?UTF-8?q?=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 build.gradle.kts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/build.gradle.kts b/build.gradle.kts
index ee7d3df..eb1d19e 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -53,6 +53,9 @@ dependencies {
     // Development tools
     developmentOnly("org.springframework.boot:spring-boot-devtools")
 
+    // REDIS
+    implementation("org.springframework.boot:spring-boot-starter-data-redis")
+
     // Test dependencies
     testImplementation("org.springframework.boot:spring-boot-starter-test")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")

From 9a4ba57048ff7784c07ccc442e8a24233691c39b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:09:03 +0900
Subject: [PATCH 2/6] =?UTF-8?q?Feat:=20QueueTokenService=20interface=20?=
 =?UTF-8?q?=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- domain.queue 패키지에 QueueTokenService 인터페이스를 추가하여 대기열 토큰 관리 로직을 캡슐화함.
- 이 인터페이스는 토큰 저장, 조회, 삭제 기능을 정의함.
---
 .../domain/queue/QueueTokenService.kt                      | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenService.kt

diff --git a/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenService.kt b/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenService.kt
new file mode 100644
index 0000000..dff87a8
--- /dev/null
+++ b/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenService.kt
@@ -0,0 +1,7 @@
+package io.hhplus.concertreservationservice.domain.queue
+
+interface QueueTokenService {
+    fun saveQueueToken(token: String, userId: Long)
+    fun getUserIdByQueueToken(token: String): Long?
+    fun deleteQueueToken(token: String)
+}

From 15ff97378571d4e4a7228a3302847de50c0ef327 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:09:55 +0900
Subject: [PATCH 3/6] =?UTF-8?q?Feat:=20RedisClient=20interface=20=EB=B0=8F?=
 =?UTF-8?q?=20=EA=B5=AC=ED=98=84=EC=B2=B4=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

-infrastructure.redis 패키지에 RedisClient 인터페이스와 RedisClientImpl 구현체를 추가함.
- Redis와의 통신을 캡슐화하여 구현체 변경에 유연하게 대응할 수 있도록 함.
---
 .../infrastructure/redis/RedisClient.kt       |  7 ++++++
 .../infrastructure/redis/RedisClientImpl.kt   | 23 +++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClient.kt
 create mode 100644 src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClientImpl.kt

diff --git a/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClient.kt b/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClient.kt
new file mode 100644
index 0000000..75ad7ff
--- /dev/null
+++ b/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClient.kt
@@ -0,0 +1,7 @@
+package io.hhplus.concertreservationservice.infrastructure.redis
+
+interface RedisClient {
+    fun set(key: String, value: String, expirationMinutes: Long)
+    fun get(key: String): String?
+    fun delete(key: String)
+}
\ No newline at end of file
diff --git a/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClientImpl.kt b/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClientImpl.kt
new file mode 100644
index 0000000..4b902d4
--- /dev/null
+++ b/src/main/kotlin/io/hhplus/concertreservationservice/infrastructure/redis/RedisClientImpl.kt
@@ -0,0 +1,23 @@
+package io.hhplus.concertreservationservice.infrastructure.redis
+
+import org.springframework.data.redis.core.StringRedisTemplate
+import org.springframework.stereotype.Component
+import java.util.concurrent.TimeUnit
+
+@Component
+class RedisClientImpl(
+    private val redisTemplate: StringRedisTemplate
+) : RedisClient {
+
+    override fun set(key: String, value: String, expirationMinutes: Long) {
+        redisTemplate.opsForValue().set(key, value, expirationMinutes, TimeUnit.MINUTES)
+    }
+
+    override fun get(key: String): String? {
+        return redisTemplate.opsForValue().get(key)
+    }
+
+    override fun delete(key: String) {
+        redisTemplate.delete(key)
+    }
+}

From 700ae28d76df441b5a1de52f3512558fa4f6abd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:11:33 +0900
Subject: [PATCH 4/6] =?UTF-8?q?Feat:=20QueueTokenServiceImpl=20=EA=B5=AC?=
 =?UTF-8?q?=ED=98=84=EC=B2=B4=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- domain.queue 패키지에 QueueTokenServiceImpl 클래스를 추가하여 QueueTokenService 인터페이스를 구현함.
- RedisClient를 사용하여 Redis와의 통신을 수행.
- tokenExpirationMinutes를 내부에서 관리하여 캡슐화를 강화.
---
 .../domain/queue/QueueTokenServiceImpl.kt     | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenServiceImpl.kt

diff --git a/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenServiceImpl.kt b/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenServiceImpl.kt
new file mode 100644
index 0000000..4f26f37
--- /dev/null
+++ b/src/main/kotlin/io/hhplus/concertreservationservice/domain/queue/QueueTokenServiceImpl.kt
@@ -0,0 +1,30 @@
+package io.hhplus.concertreservationservice.domain.queue
+
+import io.hhplus.concertreservationservice.infrastructure.redis.RedisClient
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Service
+
+@Service
+class QueueTokenServiceImpl(
+    private val redisClient: RedisClient,
+    @Value("\${queue.token.expirationMinutes}") private val tokenExpirationMinutes: Long
+) : QueueTokenService {
+
+    private val QUEUE_TOKEN_PREFIX = "queueToken:"
+
+    override fun saveQueueToken(token: String, userId: Long) {
+        val key = "$QUEUE_TOKEN_PREFIX$token"
+        redisClient.set(key, userId.toString(), tokenExpirationMinutes)
+    }
+
+    override fun getUserIdByQueueToken(token: String): Long? {
+        val key = "$QUEUE_TOKEN_PREFIX$token"
+        val userIdStr = redisClient.get(key)
+        return userIdStr?.toLong()
+    }
+
+    override fun deleteQueueToken(token: String) {
+        val key = "$QUEUE_TOKEN_PREFIX$token"
+        redisClient.delete(key)
+    }
+}

From 55eaa5c0d206d3bdbcd9f0b042d1d8a609f11953 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:12:32 +0900
Subject: [PATCH 5/6] =?UTF-8?q?Feat:=20QueueFacade=20=EC=88=98=EC=A0=95?=
 =?UTF-8?q?=ED=95=98=EC=97=AC=20QueueTokenService=20=EC=82=AC=EC=9A=A9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- QueueFacade에서 QueueTokenService를 의존성 주입 받아 사용하도록 수정.
- Redis에 직접 접근하지 않고, QueueTokenService를 통해 토큰 관리 기능을 수행.
- tokenExpirationMinutes를 QueueTokenServiceImpl 내부에서 관리하도록 변경하여 캡슐화를 강화.
---
 .../application/queue/QueueFacade.kt          | 27 ++++++++++++++-----
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/src/main/kotlin/io/hhplus/concertreservationservice/application/queue/QueueFacade.kt b/src/main/kotlin/io/hhplus/concertreservationservice/application/queue/QueueFacade.kt
index 2c3fc5e..7b1c140 100644
--- a/src/main/kotlin/io/hhplus/concertreservationservice/application/queue/QueueFacade.kt
+++ b/src/main/kotlin/io/hhplus/concertreservationservice/application/queue/QueueFacade.kt
@@ -1,6 +1,7 @@
 package io.hhplus.concertreservationservice.application.queue
 
 import io.hhplus.concertreservationservice.domain.queue.QueueService
+import io.hhplus.concertreservationservice.domain.queue.QueueTokenService
 import io.hhplus.concertreservationservice.domain.user.UserService
 import io.hhplus.concertreservationservice.exception.ErrorType
 import io.hhplus.concertreservationservice.exception.QueueException
@@ -11,27 +12,41 @@ import org.springframework.stereotype.Service
 @Service
 class QueueFacade(
     private val userService: UserService,
-    private val queueService: QueueService
+    private val queueService: QueueService,
+    private val queueTokenService: QueueTokenService
 ) {
 
     fun registerInQueue(userToken: String, request: QueueRegistrationRequest): QueueTokenResponse {
         val userId = userService.getUserIdFromToken(userToken)
         val concertScheduleId = request.concertScheduleId
+
+        // 대기열 등록
         val queueEntry = queueService.registerUserInQueue(userId, concertScheduleId)
         val estimatedWaitTime = queueService.calculateEstimatedWaitTime(queueEntry.queuePosition)
+
+        // 토큰을 Redis에 저장
+        queueTokenService.saveQueueToken(queueEntry.queueToken, userId)
+
+
         return QueueTokenResponse(
             queueToken = queueEntry.queueToken,
             queuePosition = queueEntry.queuePosition,
-            estimatedWaitTime = estimatedWaitTime)
+            estimatedWaitTime = estimatedWaitTime
+        )
     }
 
     fun getQueueStatus(queueToken: String): QueueTokenResponse {
-    val queueEntry = queueService.getQueueStatus(queueToken)
-        ?: throw QueueException(ErrorType.INVALID_QUEUE_TOKEN, "queueToken: $queueToken")
+        val userId = queueTokenService.getUserIdByQueueToken(queueToken)
+            ?: throw QueueException(ErrorType.INVALID_QUEUE_TOKEN, "queueToken: $queueToken")
+
+        val queueEntry = queueService.getQueueStatus(queueToken)
+            ?: throw QueueException(ErrorType.INVALID_QUEUE_TOKEN, "queueToken: $queueToken")
+
         val estimatedWaitTime = queueService.calculateEstimatedWaitTime(queueEntry.queuePosition)
         return QueueTokenResponse(
             queueToken = queueEntry.queueToken,
             queuePosition = queueEntry.queuePosition,
-            estimatedWaitTime = estimatedWaitTime)
+            estimatedWaitTime = estimatedWaitTime
+        )
     }
-}
\ No newline at end of file
+}

From 3ef004cccf0a4ba0d32a23337869d1937d9d6dec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B9=80=EC=9D=B8=ED=9B=84?= <ssk0710402@gmail.com>
Date: Fri, 8 Nov 2024 20:13:12 +0900
Subject: [PATCH 6/6] =?UTF-8?q?Feat:=20application.yaml=EC=97=90=20Redis?=
 =?UTF-8?q?=20=EC=84=A4=EC=A0=95=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- application.yaml 파일에 Redis 연결 정보를 추가하여 Redis 서버와의 연결을 설정함.
---
 src/main/resources/application-mysql.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/resources/application-mysql.yml b/src/main/resources/application-mysql.yml
index 10536ee..063fd33 100644
--- a/src/main/resources/application-mysql.yml
+++ b/src/main/resources/application-mysql.yml
@@ -1,4 +1,7 @@
 spring:
+  redis:
+    host: localhost
+    port: 6379
   datasource:
     driver-class-name: com.mysql.cj.jdbc.Driver
     url: jdbc:mysql://db.bluebrewlab.com:3306/dbkimjusubbl