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大量死链对搜索引擎来讲，有什么影响?

威海seo技术提升威海死链
2284

死链对搜索引擎有负面影响。死链会导致搜索引擎无法正确索引和收录网站上的内容，降低了该网站的搜索可见度，影响 SEO 优化效果。死链也会影响搜索引擎页面排序，减慢收录速度。如果有大量的死链，网站会因此降低关键词排名，影响网站页面流量。

Public @ 2023-02-25 18:12:13

大量死链对搜索引擎来讲，有什么影响?

威海seo技术提升威海死链
2593

1、死链率过高，会影响搜索引擎对网站的评分。2、搜索引擎对每个网站每天抓取的频次是限额的，若网站存在大量死链，会浪费掉抓取配额并影响其他正常页面的抓取。3、过多死链对网站用户来讲也是体验不好的表现。来源：百度搜索资源平台百度搜索学堂

Public @ 2010-05-12 15:36:53

网站防止CC攻击的方法

1. 网络流量监测：检测大量的相同流量请求，并限制其访问频率。 2. IP黑名单：创建黑名单，自动封锁频繁访问的IP地址。 3. 人机验证：通过添加图形验证码或人机验证，防止机器自动攻击。 4. 限制连接速度：限制同一IP地址的连接速度，用于减缓强化攻击者的攻击速度。 5. 网络隔离：检测访问IP来源是否合法，对非法IP进行网络隔离，以避免流量攻击。 6. 防火墙：安装防火墙，规范网络访

Public @ 2023-04-24 04:50:13

叨叨死链这回事儿

叨叨死链（Toast Dead Link）是一种网页中常见的死链接，常常会发送访客一个404错误页面，表明页面找不到了。它们通常是来源于旧网站上错误的链接，或是网站本身不小心也犯了错误，把问题给留下来。叨叨死链不仅造成了一些糟糕的用户体验，还可能会影响SEO，引起搜索引擎抓取信息失效，影响网站的整体排名。

Public @ 2023-02-25 00:00:16

死链包括协议死链和内容死链两种形式

协议死链：指页面的TCP协议或者HTTP协议状态明确表示的死链，我们常见的404、403、503就属于协议死链；内容死链：指服务器返回状态是正常的，但是网页内容已经变更为不存在、已删除或需要权限等与网站原内容无关的信息页面。

Public @ 2016-03-17 15:56:21

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[ DB ] CONNECT:[ UseTime:0.022964s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016667s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5892 LIMIT 1 [ RunTime:0.015546s ]
[ 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:0.016036s ]
[ 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:0.016084s ]
[ 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:0.016132s ]
[ 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` = 5892 LIMIT 1 [ RunTime:0.015402s ]
[ 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=5892 [ RunTime:0.018128s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo技术提升' AND `status` <> -1 LIMIT 1 [ RunTime:0.022534s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo技术提升' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035934s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海死链' AND `status` <> -1 LIMIT 1 [ RunTime:0.022469s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海死链' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032317s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.438848s

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