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DashBoard/openspec/changes/archive/2026-03-02-historical-query-slow-connection/tasks.md
egg d8e91624d4 feat(qc-gate): add Package column to LOT detail table + archive 3 completed changes 
Add PACKAGE_LEF as a dedicated `package` field in the QC-GATE API payload
and display it as a new column after LOT ID in LotTable.vue. Archive
qc-gate-lot-package-column, historical-query-slow-connection, and
msd-multifactor-backward-tracing changes with their delta specs synced
to main specs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 08:44:26 +08:00

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1. Core Infrastructure

  • 1.1 Add DB_SLOW_CALL_TIMEOUT_MS (default 300000) and DB_SLOW_MAX_CONCURRENT (default 3) to all config classes in settings.py (Config, DevelopmentConfig=2, ProductionConfig=3, TestingConfig=1/10000)
  • 1.2 Update get_db_runtime_config() in database.py to include slow_call_timeout_ms and slow_max_concurrent
  • 1.3 Add module-level threading.Semaphore, active count tracking, and get_slow_query_active_count() in database.py
  • 1.4 Refactor read_sql_df_slow(): default timeout_seconds=None (reads from config), acquire/release semaphore, log active count
  • 1.5 Update dispose_engine() to reset semaphore; add slow_query_active to get_pool_status()
  • 1.6 Increase Gunicorn timeout to 360s and graceful_timeout to 120s in gunicorn.conf.py

2. Backend Service Migration

  • 2.1 reject_history_service.py: change import to read_sql_df_slow as read_sql_df
  • 2.2 reject_dataset_cache.py: change import to read_sql_df_slow as read_sql_df
  • 2.3 hold_history_service.py: change import to read_sql_df_slow as read_sql_df (keep DatabaseCircuitOpenError/DatabasePoolExhaustedError imports)
  • 2.4 resource_history_service.py: change import to read_sql_df_slow as read_sql_df
  • 2.5 job_query_service.py: change import to read_sql_df_slow as read_sql_df (keep get_db_connection import)
  • 2.6 excel_query_service.py: set connection.call_timeout = runtime["slow_call_timeout_ms"] on direct connections in execute_batch_query and execute_advanced_batch_query
  • 2.7 query_tool_service.py: remove hardcoded timeout_seconds=120 from read_sql_df_slow call (line 1131)

3. Frontend Timeout Updates

  • 3.1 reject-history/App.vue: API_TIMEOUT 60000 → 360000
  • 3.2 mid-section-defect/App.vue: API_TIMEOUT 120000 → 360000
  • 3.3 hold-history/App.vue: API_TIMEOUT 60000 → 360000
  • 3.4 resource-history/App.vue: API_TIMEOUT 60000 → 360000
  • 3.5 shared-composables/useTraceProgress.js: DEFAULT_STAGE_TIMEOUT_MS 60000 → 360000
  • 3.6 job-query/composables/useJobQueryData.js: all timeout: 60000 → 360000 (3 sites)
  • 3.7 excel-query/composables/useExcelQueryData.js: timeout: 120000 → 360000 (2 sites, lines 135, 255)
  • 3.8 query-tool/composables/useLotDetail.js: timeout: 120000 → 360000 (3 sites) and timeout: 60000 → 360000 (1 site)
  • 3.9 query-tool/composables/useEquipmentQuery.js: timeout: 120000 → 360000 and timeout: 60000 → 360000
  • 3.10 query-tool/composables/useLotResolve.js: timeout: 60000 → 360000
  • 3.11 query-tool/composables/useLotLineage.js: timeout: 60000 → 360000
  • 3.12 query-tool/composables/useReverseLineage.js: timeout: 60000 → 360000
  • 3.13 query-tool/components/LotJobsTable.vue: timeout: 60000 → 360000

4. Verification

  • 4.1 Run python -m pytest tests/ -v — all existing tests pass (28 pre-existing failures, 1076 passed, 0 new failures)
  • 4.2 Run cd frontend && npm run build — frontend builds successfully