feat: 增加结构化日志和服务就绪检查

ai_knowledge_base_v2/docker-compose.prod.yml

@@ -40,6 +40,8 @@ services:
       DEBUG: "false"
       DATABASE_URL: ${DATABASE_URL:?必须配置经过 URL 编码的 DATABASE_URL}
       REDIS_URL: ${REDIS_URL:?必须配置经过 URL 编码的 REDIS_URL}
+      READINESS_REQUIRES_REDIS: "true"
+      LOG_LEVEL: INFO
       BACKEND_WORKERS: ${BACKEND_WORKERS:-4}
       DB_POOL_SIZE: ${DB_POOL_SIZE:-20}
       DB_MAX_OVERFLOW: ${DB_MAX_OVERFLOW:-20}
@@ -58,6 +60,12 @@ services:
         condition: service_healthy
       redis:
         condition: service_healthy
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8100/api/ready', timeout=3)"]
+      interval: 15s
+      timeout: 5s
+      retries: 10
+      start_period: 30s
 
   user-client:
     build:
@@ -79,9 +87,12 @@ services:
     volumes:
       - ./deploy/gateway.prod.conf:/etc/nginx/conf.d/default.conf:ro
     depends_on:
-      - backend
-      - user-client
-      - admin-web
+      backend:
+        condition: service_healthy
+      user-client:
+        condition: service_started
+      admin-web:
+        condition: service_started
 
 volumes:
   ai_kb_v2_mysql_data: