给统计缓存加版本并绑定现有基础数据/课表失效标签，同时让演示数据、人员数据写入主动清理统计缓存；不改统计口径、筛选、导出或页面结构。

src/Jiaowu.Api/Controllers/PersonnelController.cs

@@ -437,6 +437,9 @@ public sealed class PersonnelController(
             await cache.RemoveByTagAsync(
                 AppCacheTags.Timetables,
                 cancellationToken);
+            await cache.RemoveByTagAsync(
+                AppCacheTags.Analytics,
+                cancellationToken);
             return Created(string.Empty, new { id });
         }
         catch (DbUpdateException)
@@ -453,6 +456,9 @@ public sealed class PersonnelController(
             await cache.RemoveByTagAsync(
                 AppCacheTags.Timetables,
                 cancellationToken);
+            await cache.RemoveByTagAsync(
+                AppCacheTags.Analytics,
+                cancellationToken);
             return NoContent();
         }
         catch (DbUpdateException)

src/Jiaowu.Api/Controllers/PersonnelExcelController.cs

@@ -147,6 +147,9 @@ public sealed class PersonnelExcelController(
                     await cache.RemoveByTagAsync(
                         AppCacheTags.Timetables,
                         cancellationToken);
+                    await cache.RemoveByTagAsync(
+                        AppCacheTags.Analytics,
+                        cancellationToken);
                     return Ok(result);
                 }
                 catch (DbUpdateException)

src/Jiaowu.Api/Controllers/StatisticsController.cs

@@ -966,7 +966,11 @@ public sealed class StatisticsController(
                     source.Value.GetType());
             },
             AppCacheProfile.Analytics,
-            [AppCacheTags.Analytics],
+            [
+                AppCacheTags.Analytics,
+                AppCacheTags.BaseData,
+                AppCacheTags.Timetables
+            ],
             cancellationToken);
         return value;
     }

src/Jiaowu.Api/Infrastructure/Caching/AppCache.cs

@@ -179,7 +179,7 @@ public static class AppCacheKeys
         var filterPart = filters.Length == 0
             ? "all"
             : string.Join(':', filters.Select(Normalize));
-        return $"statistics:{Normalize(area)}:scope:{Normalize(dataScope)}:" +
+        return $"statistics:v2:{Normalize(area)}:scope:{Normalize(dataScope)}:" +
                $"college:{effectiveCollegeId?.ToString("N") ?? "all"}:{filterPart}";
     }
 }

src/Jiaowu.Api/Infrastructure/Persistence/DemoDataSeeder.cs

@@ -1,11 +1,13 @@
 using System.Data;
 using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Caching;
 using Microsoft.EntityFrameworkCore;
 
 namespace Jiaowu.Api.Infrastructure.Persistence;
 
 public sealed class DemoDataSeeder(
     AppDbContext db,
+    IAppCache cache,
     ILogger<DemoDataSeeder> logger)
 {
     // MySql.EntityFrameworkCore 10 cannot type-map parameterized primitive
@@ -47,6 +49,10 @@ public sealed class DemoDataSeeder(
             await LogSummaryAsync(cancellationToken);
             await transaction.CommitAsync(cancellationToken);
         });
+
+        await cache.RemoveByTagAsync(AppCacheTags.BaseData, cancellationToken);
+        await cache.RemoveByTagAsync(AppCacheTags.Timetables, cancellationToken);
+        await cache.RemoveByTagAsync(AppCacheTags.Analytics, cancellationToken);
     }
 
     private async Task EnsureDatabaseIsEmptyAsync(CancellationToken cancellationToken)

tests/Jiaowu.Api.Tests/DemoDataSeederTests.cs

@@ -1,4 +1,5 @@
 using Jiaowu.Api.Domain.Academic;
+using Jiaowu.Api.Infrastructure.Caching;
 using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.Data.Sqlite;
 using Microsoft.EntityFrameworkCore;
@@ -18,6 +19,7 @@ public sealed class DemoDataSeederTests
 
         var seeder = new DemoDataSeeder(
             db,
+            NoOpAppCache.Instance,
             NullLogger<DemoDataSeeder>.Instance);
 
         await seeder.SeedAsync();
@@ -46,6 +48,7 @@ public sealed class DemoDataSeederTests
 
         var seeder = new DemoDataSeeder(
             db,
+            NoOpAppCache.Instance,
             NullLogger<DemoDataSeeder>.Instance);
 
         var exception = await Assert.ThrowsAsync<InvalidOperationException>(
@@ -70,6 +73,7 @@ public sealed class DemoDataSeederTests
 
         var seeder = new DemoDataSeeder(
             db,
+            NoOpAppCache.Instance,
             NullLogger<DemoDataSeeder>.Instance);
 
         await Assert.ThrowsAsync<KeyNotFoundException>(() => seeder.SeedAsync());

tests/Jiaowu.Api.Tests/StatisticsControllerTests.cs

@@ -52,6 +52,14 @@ public sealed class StatisticsControllerTests
             null,
             CancellationToken.None);
         Assert.Equal(1, TotalCourses(first));
+        Assert.Equal(
+            new[]
+            {
+                AppCacheTags.Analytics,
+                AppCacheTags.BaseData,
+                AppCacheTags.Timetables
+            },
+            cache.Tags.Single());
 
         db.Courses.Add(CreateCourse("C003", firstCollege, category));
         await db.SaveChangesAsync();
@@ -115,6 +123,7 @@ public sealed class StatisticsControllerTests
 
         public int SourceCalls { get; private set; }
         public IReadOnlyCollection<string> Keys => values.Keys;
+        public List<IReadOnlyCollection<string>> Tags { get; } = [];
 
         public async Task<T> GetOrCreateAsync<T>(
             string key,
@@ -127,6 +136,7 @@ public sealed class StatisticsControllerTests
                 return (T)value;
 
             SourceCalls++;
+            Tags.Add(tags.ToArray());
             var loaded = await factory(cancellationToken);
             values[key] = loaded!;
             return loaded;