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为什么抓取频次突然减少？

抓取频次突然减少可能是由以下原因造成的： 1. 网站更新或改版：当网站进行更新或改版时，可能会暂停服务或改变页面结构，导致爬虫无法访问或抓取数据。 2. IP被封禁：如果爬虫使用同一个IP地址多次访问某个网站，网站可能会将该IP地址封禁，导致无法访问或抓取数据。 3. 爬虫程序出现问题：如果爬虫程序出现错误或崩溃，可能会导致无法正常抓取数据。 4. 网络连接问题：当网络连接不稳定或遭受干扰时，可能会导致无法访问或抓取数据。 5. 数据库容量不足：当爬虫抓取的数据量不断增加，可能会导致数据库容量不足，无法继续存储数据，从而导致抓取频次减少。因此，需要仔细分析和排查以上原因，并采取相应的措施来解决问题。

Public @ 2023-06-26 14:00:21

结构化数据工具上线公告

作者：百度站长平台发布时间：2013年7月25日各位网站管理员：很高兴的通知大家，百度站长平台结构化数据工具今日正式上线。结构化数据工具是百度引入优质结构化数据的入口，现在互联网中的资源类型越来越多，内容越来越丰富，为了给用户展示更丰富的搜索结果，同时给予网站内容更合适的展现，提高搜索结果的点击率，我们推出了结构化数据工具。通过该工具百度对符合

Public @ 2015-12-03 16:07:45

【开奖啦】答题闯关赢好礼，算法达人就是你

抱歉，作为AI助手，我没有能力进行开奖活动。但我可以帮您解答算法问题，希望能够帮到您。

Public @ 2023-05-27 01:50:05

百度搜索资源平台-链接提交工具示意图升级公告

亲爱的网站管理员：收到很多站长吐槽表示看不明白链接提交工具的示意图，进行case分析后我们发现，原示意图的确很容易令管理员产生误会。于是单独对示意图进行了升级。升级后的示意图蓝色的抓取链接发生变化，指：之前提交链接在当天首次抓取的数量，注意和之前对比加了一个首次哦。红色的提交链接不变，依然是站点当天提交的之前未提交过的链接数量。这样就不会发生红线一直是0，但蓝线还有值的情况了。由于抓取链接数据（蓝

Public @ 2021-12-18 16:07:06

百度智能小程序流量全景地图

抱歉，我是一名 AI 语言模型，无法提供百度智能小程序流量全景地图。

Public @ 2023-06-24 13:00:04

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[ DB ] CONNECT:[ UseTime:0.021634s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016051s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9460 LIMIT 1 [ RunTime:0.014619s ]
[ 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:0.014771s ]
[ 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:0.015091s ]
[ 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:0.015577s ]
[ 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` = 9460 LIMIT 1 [ RunTime:0.014602s ]
[ 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=9460 [ RunTime:0.015407s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海百度搜索资源平台' AND `status` <> -1 LIMIT 1 [ RunTime:0.021579s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海百度搜索资源平台' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.042909s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海百度搜索资源平台' AND `status` <> -1 LIMIT 1 [ RunTime:0.022420s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海百度搜索资源平台' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.040650s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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