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什么是ETag？ETag作用有哪些

ETag是HTTP协议提供的一种用于判断资源是否发生变化的机制。ETag是一个字符串，由服务器生成，在资源被更新时会发生变化。客户端请求资源时，服务器会将资源的ETag值一起返回，客户端可以缓存资源，并记录ETag值。当客户端再次请求该资源时，会将上次记录的ETag值一同发送给服务器。如果此时服务器返回的ETag值与客户端记录的值相同，就说明资源没有变化，客户端可以直接使用缓存的资源，减少网络请求。 ETag的作用主要有： 1.帮助客户端减少网络请求，提高网站性能。 2.减少对无需更新的资源的重复传输，节省带宽资源。 3.ETag可以让服务器能够更加精确地判断资源的变化，避免因缓存而出现缺失更新等问题。 4.ETag也可以用来实现简单的防重放攻击，防止攻击者重复发送已经收到的报文。

Public @ 2023-03-25 23:50:19

百度搜索资源平台-消息管理及主页管理下线公告

亲爱的搜索合作伙伴：由于业务调整，搜索资源平台移动专区消息管理与主页管理功能已下线，给您带来的不便敬请谅解。来源：百度搜索资源平台

Public @ 2013-03-29 16:05:24

百度站长平台升级为搜索资源平台并推新阿拉丁开放生态

近日，百度宣布将站长平台升级为搜索资源平台，同时推出新的阿拉丁开放生态。该平台的目的是帮助站长更好地管理和优化网站，提高网站的曝光率和搜索排名。搜索资源平台将提供更多的数据分析工具和优化建议，帮助站长了解网站的数据情况，并根据情况进行优化。同时，平台还会提供一些流量分析工具，帮助站长了解访客的行为轨迹和兴趣爱好，从而更好地满足访客的需求。阿拉丁开放生态是百度推出的一种开放性的搜索资源管理平

Public @ 2023-06-04 22:50:13

360搜索站长平台Sitemap提交流程

1、登陆360搜索站长平台，点添加网站2、添加您的网站并验证站长身份3、完成验证后，点添加新数据4、完成添加（根据文件大小，处理时间长短不等。提交后请耐心等待。）

Public @ 2022-09-04 16:11:52

如何生成站点地图

网上有很多站点地图生成的方法，比如在线生成、软件生成等，sitemap地图可以提交给各大搜索引擎，从而使搜索引擎更好的对网站页面进行收录，我们也可以通过robots.txt来告诉搜索引擎地图的位置。将制作好的网站地图上传至网站根目录下，最关键是把网站地图链接地址加入在 robots文件中以及做好网站地图在页面方便蜘蛛抓取的位置，一般把网站地图放在页眉和页脚位置。1、普通html格式的网站地图它的

Public @ 2020-08-31 16:11:49

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.021471s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.015866s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.014570s ]
[ 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:0.015282s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.014275s ]
[ 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:0.015578s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6318 LIMIT 1 [ RunTime:0.014451s ]
[ 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:0.014810s ]
[ 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:0.014893s ]
[ 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:0.015829s ]
[ 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` = 6318 LIMIT 1 [ RunTime:0.014447s ]
[ 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+1 where id=6318 [ RunTime:0.017659s ]
[ 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:0.022000s ]
[ 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:0.039431s ]
[ 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Sitemap' AND `status` <> -1 LIMIT 1 [ RunTime:0.021432s ]
[ 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Sitemap' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035078s ]
[ 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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