优化仿真求解性能并修复流量闭合问题（初版）

app/main.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-from collections.abc import Callable, Iterator, Mapping
+from collections.abc import AsyncIterator, Callable, Iterator, Mapping
+from contextlib import asynccontextmanager
 import csv
 from dataclasses import dataclass
 from datetime import datetime, timezone
@@ -22,6 +23,7 @@ from fastapi.responses import FileResponse, HTMLResponse, StreamingResponse
 from pydantic import BaseModel, ConfigDict, Field, ValidationError
 
 from app.simulation.performance import performance_span, profile_phase, profile_run
+from app.simulation.property_cache import property_cache_run
 from app.system_xml import (
     SystemXmlDocument,
     SystemXmlValidationReport,
@@ -35,7 +37,19 @@ if TYPE_CHECKING:
     from app.simulation.systems.network import SimulationNetwork
 
 
-app = FastAPI(title="System Simulation ReactFlow App")
+
+@asynccontextmanager
+async def _app_lifespan(application: FastAPI) -> AsyncIterator[None]:
+    from app.simulation.warmup import warm_up_simulation_runtime
+
+    application.state.simulation_warmup = warm_up_simulation_runtime().as_dict()
+    yield
+
+
+app = FastAPI(
+    title="System Simulation ReactFlow App",
+    lifespan=_app_lifespan,
+)
 FRONTEND_DIST_DIR = Path(__file__).resolve().parent.parent / "frontend" / "dist"
 PROJECT_STORAGE_DIR = Path(__file__).parent / "data" / "reactflow-projects"
 SYSTEM_XML_SCHEMA_VERSION = "3"
@@ -668,14 +682,25 @@ def run_system_xml_simulation(
     progress_callback: SimulationProgressEmitter | None = None,
     cancel_check: Callable[[], bool] | None = None,
 ) -> dict[str, object]:
-    with profile_run() as trace:
-        result = _run_system_xml_simulation_profiled(
-            xml_bytes,
-            progress_callback,
-            cancel_check,
-        )
+    with property_cache_run() as property_cache:
+        with profile_run() as trace:
+            result = _run_system_xml_simulation_profiled(
+                xml_bytes,
+                progress_callback,
+                cancel_check,
+            )
 
     performance = trace.snapshot()
+    if performance.get("mode") == "audit" and property_cache is not None:
+        cache_info = property_cache.info()
+        performance["propertyCache"] = {
+            "hits": cache_info.hits,
+            "misses": cache_info.misses,
+            "maxEntriesPerCache": cache_info.max_entries_per_cache,
+            "cacheCount": cache_info.cache_count,
+            "currentEntries": cache_info.current_entries,
+            "evictions": cache_info.evictions,
+        }
     if performance.get("mode") != "off":
         diagnostics = dict(result.get("diagnostics", {}))
         diagnostics["performance"] = performance
@@ -766,6 +791,9 @@ def _run_system_xml_simulation_profiled(
             },
         ) from exc
     except AlgebraicSolveError as exc:
+        algebraic_diagnostics = exc.diagnostics.as_dict()
+        algebraic_diagnostics["scopeKind"] = exc.scope_kind
+        algebraic_diagnostics["scopeComponents"] = list(exc.scope_components)
         raise HTTPException(
             status_code=422,
             detail={
@@ -778,7 +806,7 @@ def _run_system_xml_simulation_profiled(
                         "message": str(exc),
                     }
                 ],
-                "diagnostics": exc.diagnostics.as_dict(),
+                "diagnostics": algebraic_diagnostics,
             },
         ) from exc
     except StreamSolveError as exc: