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网站打开慢常见情况解析

1，首先使用ping命令测试域名的联通性，是否延迟变大，或者丢包严重例如ping www.baidu.com

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2.测试是否能够远程到服务器上，如果可以远程，打开任务管理器，查看网络使用率

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一般情况，网上是100M或者1000M网卡，带宽是10M , 物理网卡是100M，利用到达或者超过10% 就是带宽跑满或者超过带宽，肯定会造成网站打开慢，在进程选项中，查看cpu或者内存使用比较高的，结束掉，观察带宽利用率是否降下来，如果是，进一步检查结束掉的进程对应的软件程序，如果不是，继续结束下一个较高进程

3.DNS解析有问题，也可能造成网站打开缓慢，这种情况，可以考虑更换网络配置信息处的DNS选项

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4.数据库例如mysql 调用频繁，占用cpu过高，导致网站反应过慢，可以检查数据库配置，是否有bug漏洞，造成频繁查询调用，进行优化处理

5.某个jss文件或者图片加载时间过长，或者加载失败造成网页整体打开慢，用浏览器打开网站域名，同时按F12 点击network ，进行查看

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来源：景安

Public @ 2018-04-12 15:37:03

java主机部署SSL的301跳转

威海网站建设威海SSL
2012

Java主机部署SSL时，可以通过以下步骤实现301跳转： 1.为Java应用服务器安装SSL证书，并按照官方文档配置SSL，确保SSL证书可以正确地工作。 2.在应用服务器中配置重定向规则，将HTTP请求重定向到HTTPS地址，可以使用重定向过滤器实现，以下是使用Servlet Filter实现HTTP到HTTPS的重定向示例： ```java import java.io.IOExce

Public @ 2023-04-16 22:00:43

漏洞类型说明

代码执行漏洞是指在恶意攻击者利用应用程序中的漏洞或错误，导致被攻击的应用程序去执行攻击者输入的不安全的代码的一种安全漏洞。攻击者可以利用此种漏洞向系统中注入恶意代码，从而达到对系统数据损坏或其它目标的目的。该类漏洞一般分为任意代码执行类型，命令执行类型和SQL注入类型三种。

Public @ 2023-03-01 11:00:12

网站打开速度慢？如何优化网站打开速度？

学习了网站打开速度慢？影响网站打开速度的因素有哪些？以后，今天我们就来如何优化网站打开速度。1.前端优化前端的性能对于一个Web应用来说非常重要，如果一个Web应用的页面加载速度非常快、对于用户的操作可以及时响应，那么网站的访问速度和用户体验将会极大地提升，也对优化SEO减少网页跳出率有很大帮助。2.负载均衡负载均衡是由多台服务器以对称的方式组成一个服务器集合，每台服务器都具有相同的作用，都可以单

Public @ 2009-03-20 15:37:13

带宽下载速度之间单位换算

1 byte = 8 bits 1 kilobit per second (kbps) = 1000 bits per second (bps) 1 megabit per second (Mbps) = 1000 kilobits per second (kbps) 1 gigabit per second (Gbps) = 1000 megabits per second (Mbps) To

Public @ 2023-04-12 12:50:38

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.022979s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016290s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1324 LIMIT 1 [ RunTime:0.015543s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.015627s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.015701s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.015870s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1324 LIMIT 1 [ RunTime:0.015155s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=1324 [ RunTime:0.018792s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.024444s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.045516s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海网站访问速度' AND `status` <> -1 LIMIT 1 [ RunTime:0.023586s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海网站访问速度' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032653s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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