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什么是域名

威海网站建设威海域名
1320

通俗点说，域名就是对ip地址的解析。如果没有域名，我们访问网站只能通过一些ip地址访问了，例如：123.456.789.134。这样的ip是很难记住的，所以我们要通过记住域名来访问网站。比如：www.aizhan.com就是一个域名。

Public @ 2012-07-28 16:00:32

FTP上传大文件时连接重置或者中断，重新连接上传也出现同样情况处理办法

威海网站建设威海FTP
1321

上传大文件的时候经常连接被重置或者中断，重新连接上传出现同样错误，具体错误如下图所示：blob.pngblob.png原因：机房防火墙设置了tcp空闲5分钟中断，如果使用被动模式上传较大的文件，上传速度比较慢时容易造成超时，所以连接会被中断重置。解决办法：将ftp软件设置为主动模式（port模式）进行连接上传即可。以下是几款常用FTP设置方式：1、LeapFTPblob.pngblob.png2、

Public @ 2018-12-05 15:45:59

经典正则表达式

以下是一些经典的正则表达式： 1. 匹配邮箱地址： ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ 2. 匹配电话号码： ^(?:\(\d{3}\)|\d{3})[- ]?\d{3}[- ]?\d{4}$ 3. 匹配 IP 地址： ^([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|

Public @ 2023-04-23 15:50:16

域名解析

域名解析是将域名转换为 IP 地址的过程。当用户在浏览器中输入一个域名时，浏览器会向 DNS 服务器发送一个查询请求，该 DNS 服务器会查找并返回该域名对应的 IP 地址。这样浏览器就可以使用该 IP 地址连接到服务器并获取网页内容。域名解析是实现域名访问的基础，也是互联网能够正常运作的重要环节之一。

Public @ 2023-06-04 09:00:06

什么是别名记录（CNAME）？

别名记录（CNAME）是一种DNS记录类型，它将一个别名（域名或子域名）映射到其对应的真实主机名。例如，如果您使用CNAME记录将sub.example.com指向www.example.com，DNS服务器会将该请求解释为请求www.example.com的IP地址，并将结果返回给客户端。此外，如果您更改了真实主机名的IP地址，所有使用CNAME记录的别名也将立即更新其解析后的IP地址。

Public @ 2023-06-28 06:50:14

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[ DB ] CONNECT:[ UseTime:0.025985s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.019071s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.017694s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.018927s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.017579s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.019215s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 3547 LIMIT 1 [ RunTime:0.017667s ]
[ 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:0.017987s ]
[ 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:0.017931s ]
[ 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:0.018505s ]
[ 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` = 3547 LIMIT 1 [ RunTime:0.017433s ]
[ 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=3547 [ RunTime:0.019026s ]
[ 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:0.024558s ]
[ 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:0.046061s ]
[ 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` = '威海域名' AND `status` <> -1 LIMIT 1 [ RunTime:0.025037s ]
[ 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` = '威海域名' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.036812s ]
[ 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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