Pomelo Lee workspace

vi /etc/sysctl.conf
##生效
/sbin/sysctl -p
 
##查看keepalive的相关配置
sysctl -a | grep keepalive
 
##查看tcp连接的相关状态指令
netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
 
##若没有netstat指令安装
yum install net-tools

ls -lh $(find / -type f -size +100M)

package com.pomelolee.configuration;
 
import lombok.extern.slf4j.Slf4j;
 
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
 
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import org.springframework.util.StopWatch;
import org.springframework.web.multipart.MultipartFile;
 
@Slf4j
@Aspect
@Component
public class WebControllerLogConfig {
 
    @Pointcut("execution(public * com.pomelolee.endpoint.*.*(..))")
    public void webRecordLog() {
 
    }
 
    @Around("webRecordLog()")
    public Object process(ProceedingJoinPoint jp) throws Throwable {
        String className = jp.getSignature().getDeclaringTypeName();
        String methodName = ((MethodSignature) jp.getSignature()).getMethod().getName();
        String classMethod = className + "." + methodName;
        Object[] arguments = jp.getArgs();
        Object[] args = new Object[arguments.length];
        for(int i=0;i<arguments.length;i++) {
    	 if (arguments[i] instanceof ServletRequest || arguments[i] instanceof ServletResponse || arguments[i] instanceof MultipartFile) { 
             //ServletRequest不能序列化，从入参里排除，否则报异常：java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode (i.e. isAsyncStarted() returns false)
             //ServletResponse不能序列化 从入参里排除，否则报异常：java.lang.IllegalStateException: getOutputStream() has already been called for this response
               continue;
           }
           args[i] = arguments[i];
        }
        log.info("===controller classMethod:{},input args:{} ====", classMethod, JsonKit.toJSONString(args));
        final StopWatch stopWatch = new StopWatch();
        stopWatch.start();
        Object result = jp.proceed();
        stopWatch.stop();
        final String logMessage = StringUtils.leftPad(Long.toString(stopWatch.getTotalTimeMillis()), 5) + " ms ";
        log.info("the classMethod: {} cost time: {}",classMethod,logMessage);
        log.info("===controller  classMethod: {} ,input args:{} ====", classMethod, JsonKit.toJSONString(result));
        return result;
    }
}

xfs_repair /dev/mapper/centos-root -L
reboot

eureka.client.register-with-eureka=false
eureka.client.fetchRegistry=false
eureka.client.server.waitTimeInMsWhenSyncEmpty=0

public static String toJSONString(Object data) {
		try {
			return mapper.writeValueAsString(data);
		} catch (JsonProcessingException e) {
			e.printStackTrace();
		}
		return "";
	}
 
	public static String parseObjectVal(String data, String key) {
		try {
			JsonNode node = mapper.readTree(data);
			return node.get(key).toString();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}
 
	public static <t> T parseArray(String data, TypeReference</t><t> valueTypeRef) {
		T ret = null;
		try {
			ret = mapper.readValue(data, valueTypeRef);
		} catch (JsonParseException e) {
			e.printStackTrace();
		} catch (JsonMappingException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return ret;
	}
 
	public static Map<String, Object> parseObject(String data) {
		Map<String, Object> map = parseObject(data, new TypeReference<Map<String, Object>>() {
		});
		return map;
	}
 
       // ......
</t>