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lib/database.ts

@@ -18,6 +18,14 @@ const dbConfig = {
   reconnect: true,
   connectionLimit: 10,
   queueLimit: 0,
+  // 添加連接重試和錯誤處理配置
+  retryDelay: 2000,
+  maxRetries: 3,
+  // 添加連接池配置
+  idleTimeout: 300000,
+  maxIdle: 10,
+  // 添加 SSL 配置（如果需要）
+  ssl: false,
 };
 
 // 創建連接池
@@ -46,19 +54,51 @@ export class Database {
 
   // 執行查詢
   public async query<T = any>(sql: string, params?: any[]): Promise<T[]> {
-    const connection = await this.getConnection();
-    try {
-      const [rows] = await connection.execute(sql, params);
-      return rows as T[];
-    } finally {
-      connection.release();
+    let connection;
+    let retries = 0;
+    const maxRetries = 3;
+
+    while (retries < maxRetries) {
+      try {
+        connection = await this.getConnection();
+        const [rows] = await connection.execute(sql, params);
+        return rows as T[];
+      } catch (error: any) {
+        console.error(`資料庫查詢錯誤 (嘗試 ${retries + 1}/${maxRetries}):`, error.message);
+        
+        if (connection) {
+          connection.release();
+        }
+        
+        if (error.code === 'ECONNRESET' || error.code === 'PROTOCOL_CONNECTION_LOST') {
+          retries++;
+          if (retries < maxRetries) {
+            console.log(`等待 ${2000 * retries}ms 後重試...`);
+            await new Promise(resolve => setTimeout(resolve, 2000 * retries));
+            continue;
+          }
+        }
+        
+        throw error;
+      } finally {
+        if (connection) {
+          connection.release();
+        }
+      }
     }
+    
+    throw new Error('資料庫連接失敗，已達到最大重試次數');
   }
 
   // 執行單一查詢
   public async queryOne<T = any>(sql: string, params?: any[]): Promise<T | null> {
-    const results = await this.query<T>(sql, params);
-    return results.length > 0 ? results[0] : null;
+    try {
+      const results = await this.query<T>(sql, params);
+      return results.length > 0 ? results[0] : null;
+    } catch (error) {
+      console.error('資料庫單一查詢錯誤:', error);
+      throw error;
+    }
   }
 
   // 執行插入