perf: optimize authorization scoreline and workers

Tiku.Api/Controllers/HealthController.cs

@@ -4,9 +4,9 @@ using Tiku.Api.Contracts;
 using Tiku.Application.Security;
 using Tiku.Infrastructure.Persistence;
 using Microsoft.EntityFrameworkCore;
-using MassTransit.EntityFrameworkCoreIntegration;
 using Microsoft.Extensions.Diagnostics.HealthChecks;
 using Tiku.Infrastructure.Messaging;
+using Tiku.Api.Observability;
 
 namespace Tiku.Api.Controllers;
 
@@ -19,7 +19,8 @@ public sealed class HealthController(
     TikuDbContext dbContext,
     IRedisSecurityStore redisSecurityStore,
     MessagingOptions messagingOptions,
-    HealthCheckService healthCheckService) : ControllerBase
+    HealthCheckService healthCheckService,
+    OutboxBacklogSnapshot outboxSnapshot) : ControllerBase
 {
     [HttpGet]
     [EndpointSummary("健康检查")]
@@ -43,17 +44,8 @@ public sealed class HealthController(
             registration => registration.Tags.Contains("ready"),
             cancellationToken);
         var rabbitMq = !messagingOptions.IsConfigured || rabbitHealth.Status == HealthStatus.Healthy;
-        var outboxPending = database
-            ? await dbContext.Set<OutboxMessage>().CountAsync(cancellationToken)
-            : -1;
-        var outboxOldestSentTime = database
-            ? await dbContext.Set<OutboxMessage>()
-                .Select(message => (DateTime?)message.SentTime)
-                .MinAsync(cancellationToken)
-            : null;
-        var outboxOldestAgeSeconds = outboxOldestSentTime is null
-            ? 0
-            : Math.Max(0, (DateTimeOffset.UtcNow - new DateTimeOffset(outboxOldestSentTime.Value)).TotalSeconds);
+        var outboxPending = outboxSnapshot.Pending;
+        var outboxOldestAgeSeconds = outboxSnapshot.OldestAgeSeconds;
         var outboxAlert = outboxPending >= messagingOptions.OutboxBacklogAlertCount ||
                           outboxOldestAgeSeconds >= messagingOptions.OutboxOldestMessageAlertSeconds;
         var ready = database && redis && rabbitMq;