1. 确认AWS ALB配置是否正确；
2. 确认EKS worker节点的网络是否正常；
3. 检查SpringBoot API的请求处理时间是否太长；
4. 增加ELB idle timeout时间；
5. 尝试使用nginx作为代理服务器解决问题。

示例代码：

application.properties

server.port=8080 server.servlet.context-path=/api server.tomcat.connectionTimeout=30000 server.tomcat.maxConnections=1000 server.tomcat.maxThreads=200 server.tomcat.maxHttpHeaderSize=16384 server.tomcat.accessLogEnabled=true

AWS ALB health check settings

management.endpoint.health.show-details=always management.health.db.enabled=true management.health.db.time-to-live=10000 management.health.redis.enabled=true management.health.redis.time-to-live=10000 management.endpoint.health.cache.enabled=true management.endpoint.health.cache.time-to-live=10000

nginx settings

upstream api { server localhost:8080; }

server { listen 80;

location / { proxy_pass http://api; }

location /healthcheck { proxy_pass http://localhost:8080/actuator/health; } }