feat: multi-module iteration

server/dukang-api/src/modules/health/health.controller.ts

@@ -0,0 +1,35 @@
+import { Controller, Get } from '@nestjs/common';
+import { PrismaService } from '../../common/prisma/prisma.module';
+import { RedisService } from '../../common/redis/redis.service';
+
+@Controller('health')
+export class HealthController {
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly redis: RedisService,
+  ) {}
+
+  @Get()
+  async check() {
+    let db: 'ok' | 'error' = 'ok';
+    let redis: 'ok' | 'error' = 'ok';
+    try {
+      await this.prisma.$queryRaw`SELECT 1`;
+    } catch {
+      db = 'error';
+    }
+    try {
+      const pong = await this.redis.client.ping();
+      if (pong !== 'PONG') redis = 'error';
+    } catch {
+      redis = 'error';
+    }
+    const status = db === 'ok' && redis === 'ok' ? 'ok' : 'degraded';
+    return {
+      status,
+      service: 'dukang-api',
+      version: 'prev1',
+      checks: { db, redis },
+    };
+  }
+}

server/dukang-api/src/modules/health/health.module.ts

@@ -0,0 +1,6 @@
+import { Module } from '@nestjs/common';
+import { HealthController } from './health.controller';
+
+/** Prisma / Redis 已为 Global，Health 直接注入探活 */
+@Module({ controllers: [HealthController] })
+export class HealthModule {}