RDSを使用するように変更

Author: bearl27

backend/infra/db.go

@@ -4,26 +4,50 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"time"
 
 	"gorm.io/driver/mysql"
 	"gorm.io/gorm"
 )
 
 func SetupDB() *gorm.DB {
+	// TLS接続を有効化（AWS RDS向け）
 	dsn := fmt.Sprintf(
-		"%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Asia%%2FTokyo",
+		"%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Asia%%2FTokyo&tls=true",
 		os.Getenv("DB_USER"),
 		os.Getenv("DB_PASSWORD"),
 		os.Getenv("DB_HOST"),
 		os.Getenv("DB_PORT"),
 		os.Getenv("DB_NAME"),
 	)
 
-	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	// リトライロジック（RDS接続に時間がかかる場合がある）
+	var db *gorm.DB
+	var err error
+	maxRetries := 10
+	for i := 0; i < maxRetries; i++ {
+		db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
+		if err == nil {
+			break
+		}
+		log.Printf("Failed to connect to database (attempt %d/%d): %v", i+1, maxRetries, err)
+		time.Sleep(3 * time.Second)
+	}
+
+	if err != nil {
+		panic(fmt.Sprintf("Failed to connect database after %d attempts: %v", maxRetries, err))
+	}
+
+	// コネクションプール設定（RDS向け推奨）
+	sqlDB, err := db.DB()
 	if err != nil {
-		panic(fmt.Sprintf("Failed to connect database: %v", err))
+		panic(fmt.Sprintf("Failed to get database instance: %v", err))
 	}
-	log.Println("Setup mysql database")
+	sqlDB.SetMaxIdleConns(10)
+	sqlDB.SetMaxOpenConns(100)
+	sqlDB.SetConnMaxLifetime(time.Hour)
+
+	log.Println("Successfully connected to MySQL database (RDS)")
 
 	return db
 }

docker-compose.yaml

@@ -16,39 +16,9 @@ services:
       - "8080:8080"
     env_file:
       - .env
-    environment:
-      DB_HOST: db
-      DB_PORT: "3306"
-    depends_on:
-      db:
-        condition: service_healthy
     networks:
       - app-network
 
-  db:
-    image: mysql:8.0
-    restart: always
-    environment:
-      - MYSQL_USER=${DB_USER}
-      - MYSQL_PASSWORD=${DB_PASSWORD}
-      - MYSQL_DATABASE=${DB_NAME}
-      - MYSQL_ROOT_PASSWORD=${DB_ROOT_PASSWORD}
-    ports:
-      - "3306:3306"
-    volumes:
-      - db-data:/var/lib/mysql
-    healthcheck:
-      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-p${DB_ROOT_PASSWORD}"]
-      interval: 5s
-      timeout: 3s
-      retries: 10
-      start_period: 30s
-    networks:
-      - app-network
-
-volumes:
-  db-data:
-
 networks:
   app-network:
     driver: bridge