Background Nacos’s current health-check mechanism often fails to detect instance failures in time, especially under high QPS and node volatility. We’ve encountered cases where: Solution: Custom FAST_TCP HealthCheckProcessor We wrote a minimal plugin FastHealthCheckProcessor that implements two enhancements: Highlights: Code “`java// import com.alibaba.nacos.api.naming.pojo.Instance;import com.alibaba.nacos.naming.healthcheck.AbstractHealthCheckProcessor;import com.alibaba.nacos.naming.healthcheck.HealthCheckTask;import com.alibaba.nacos.naming.healthcheck.HealthCheckType; import java.net.Socket;import java.util.Optional; /** – 即时状态推送，避免延迟同步*/public class FastHealthCheckProcessor extends … Continue reading [Plugin Proposal] Custom HealthCheckProcessor to fix delayed failure detection in production (FAST_TCP plugin)