[2026-05-01 11:41:09] production.INFO: CSV import started {"session_id":"csv_import_69f412c534de43.50173348","user_id":48,"user_name":"unknown","ip_address":"118.238.214.29","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36","import_config":{"table":"customers","mode":"update","total_rows":52,"mapping":{"customer_code":"得意先コード","president_name":"代表者名"}},"file_info":{"name":"代表者名変更.csv","size":18797,"path":"csv_imports/bd0bje4cSbGLGo0VzQ1PSMDtoZepGPNOrw9OOz6s.csv"},"performance":{"start_time":"2026-05-01 11:41:09","start_memory_mb":30.0},"timestamp":"2026-05-01T02:41:09.230165Z","component":"csv_import"} 
[2026-05-01 11:41:09] production.INFO: CSV import completed {"session_id":"csv_import_69f412c534de43.50173348","user_id":48,"user_name":"unknown","ip_address":"118.238.214.29","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36","result":{"import_id":129,"success":true,"total_rows":52,"processed_rows":52,"success_rows":52,"error_rows":0,"warning_rows":0,"has_error_file":false},"performance":{"execution_time_seconds":0.259,"start_memory_mb":30.0,"end_memory_mb":38.0,"peak_memory_mb":38.0,"memory_increase_mb":8.0},"timestamp":"2026-05-01T02:41:09.475308Z","component":"csv_import"} 
[2026-05-01 13:52:56] production.INFO: CSV import started {"session_id":"csv_import_69f431a880f8a4.57900038","user_id":48,"user_name":"unknown","ip_address":"118.238.214.29","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36","import_config":{"table":"customers","mode":"update","total_rows":52,"mapping":{"customer_code":"得意先コード","president_name":"代表者名"}},"file_info":{"name":"代表者変更.csv","size":18797,"path":"csv_imports/y94Z09Xzi85QqsnwxOk4GmyRjMkBDazwO0S0vX32.csv"},"performance":{"start_time":"2026-05-01 13:52:56","start_memory_mb":30.0},"timestamp":"2026-05-01T04:52:56.541818Z","component":"csv_import"} 
[2026-05-01 13:52:56] production.INFO: CSV import completed {"session_id":"csv_import_69f431a880f8a4.57900038","user_id":48,"user_name":"unknown","ip_address":"118.238.214.29","user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36","result":{"import_id":132,"success":true,"total_rows":52,"processed_rows":52,"success_rows":52,"error_rows":0,"warning_rows":0,"has_error_file":false},"performance":{"execution_time_seconds":0.235,"start_memory_mb":30.0,"end_memory_mb":38.0,"peak_memory_mb":38.0,"memory_increase_mb":8.0},"timestamp":"2026-05-01T04:52:56.763623Z","component":"csv_import"}