通过配置readiness探针和preStop hook，实现优雅启动和停止（滚动部署）
1. k8s工作负载配置
readinessProbe:
httpGet:
path: /datetime
port: 8080
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 1
periodSeconds: 30
successThreshold: 1
failureThreshold: 6
lifecycle:
preStop:
exec:
command:
- /bin/sh
- '-c'
- sleep 15s2. 网关改造文章来源：https://www.toymoban.com/news/detail-842304.html
@SpringBootApplication
public class GracefulShutdownApplication {
public static void main(String[] args) {
SpringApplication.run(GracefulShutdownApplication.class, args);
}
@Bean
public GracefulShutdown gracefulShutdown() {
return new GracefulShutdown();
}
}public class GracefulShutdown implements ApplicationListener<ContextClosedEvent> {
@Override
public void onApplicationEvent(ContextClosedEvent contextClosedEvent) {
HttpResources.disposeLoopsAndConnectionsLater().delaySubscription(Duration.ofSeconds(20)).block();
}
}经过测试发现，可以实现请求0失败文章来源地址https://www.toymoban.com/news/detail-842304.html
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