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fidc-backtest-engine/docs/evidence/compact-daily-stock-state-cache-key-20260905.json

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{
"schemaVersion": "fidc-compact-daily-stock-state-cache-key/v1",
"measuredAt": "2026-09-05T01:20:00+08:00",
"host": "192.168.31.177",
"engineCommit": "6f81e1940ad4ddd4eefbe12c056be28f2b64d127",
"runnerBinarySha256": "c2d9101a89b71b51051b8762375476518e40d40e29a8ee0f9615ac4c55fcdb0a",
"implementation": {
"description": "remove the redundant execution date from stock-state cache keys because the complete cache is already cleared before the active date changes",
"keyBefore": "(execution_date, factor_date, symbol_id, execution_time, use_intraday_quote)",
"keyAfter": "(factor_date, symbol_id, execution_time, use_intraday_quote)",
"crossDateResetTested": true,
"cachedFactorValues": false,
"cachedSelectionResults": false,
"pitSemanticsChanged": false
},
"primaryFiveYearContract": {
"startDate": "2021-08-23",
"endDate": "2026-08-28",
"frequency": "1d",
"matchingType": "next_bar_open",
"totalReturn": 0.9219861819172002,
"tradeCount": 26088,
"canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
"resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
"hotEngineSeconds": [5.262, 5.734, 5.89, 5.612, 6.301],
"hotMedianEngineSeconds": 5.734,
"sharedOrderBaselineMedianEngineSeconds": 5.742,
"observedMedianImprovementPercent": 0.13932427725531174,
"resultConsistent": true,
"terminalAuditStatus": "clean"
},
"secondaryFiveYearContract": {
"totalReturn": 1.1342962298106998,
"tradeCount": 19404,
"canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
"resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
"engineSeconds": [5.889, 5.853, 5.342],
"medianEngineSeconds": 5.853,
"resultConsistent": true,
"terminalAuditStatus": "clean"
},
"coldDataObservation": {
"runId": "btr_1788542108713_2936456_0",
"totalSeconds": 54.502,
"dataSeconds": 46.584,
"engineSeconds": 7.011,
"sourceQuerySeconds": 17.585,
"datasetConstructSeconds": 12.913,
"marketIndexBuildSeconds": 7.671,
"adjustmentValidationSeconds": 1.855,
"hotDataSecondsRange": [0.002, 0.006],
"performanceComparisonExcluded": true
},
"memoryObservation": {
"processRssKiB": 11136672,
"processAnonymousKiB": 11120428,
"cgroupCurrentBytes": 12445237248,
"cgroupFileCacheBytes": 1029632000,
"cgroupActiveFileBytes": 1009012736,
"duplicateDataSetLeakObserved": false,
"note": "the gap between process RSS and cgroup memory is reclaimable file-page cache rather than a second resident DataSet"
},
"testGate": {
"coreUnitTotal": 420,
"corePassed": 414,
"ignoredManualBenchmarks": 6,
"failed": 0,
"integrationSuitesPassed": true
},
"remoteArtifacts": [
"/srv/fidc/canonical/run/fidc-private/evidence/compact-stock-cache-key-20260905.json",
"/srv/fidc/canonical/run/fidc-private/evidence/compact-stock-cache-key-secondary-20260905.json"
],
"acceptance": {
"status": "accepted_structural_compaction_no_regression",
"endToEndSpeedupClaimed": false,
"reason": "the key is smaller, the cross-date isolation test passes, both five-year strategies retain exact results, and observed wall time is neutral to slightly better"
}
}