为什么我测试速度时访问双线、多线的速度还没有电信的快？_威海佰年网络技术有限公司_网站建设_软件开发_私有云_商标注册_公众号_小程序_APP_物联网_ChatGPT

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为什么我测试速度时访问双线、多线的速度还没有电信的快？

很正常，因为双线、多线的速度是受线路质量限制的，在一定程度上也与用户的上网体验有关，可以相对比较一下，如果你追求速度，最好考虑电信特种线路。

Public @ 2023-03-04 17:48:08

为什么“部署自签SSL证书非常不安全”

威海网站建设威海SSL
2495

自签SSL证书是由网站所有者自行签署的数字证书，而不是通过认证机构（CA）签署的证书。因此，自签证书无法通过Internet Explorer、Safari等广泛采用的浏览器检查验证，其安全性无法得到保证。另外，自签SSL证书不受任何监管机构和权威机构的监管，在使用时对于一些攻击者来说，这是一个很大的优势。他们可以通过各种方式恶意篡改证书，从而给访问网站的用户带来诸多危险。此外，一些更新的

Public @ 2023-06-10 14:50:19

把握5元素，让页面文字阅读更舒适

上网在线阅读，是大多人获取信息的重要途径。用户会在网上阅读到大量的新闻及各类文章，特别是网络小说，这些页面展示的主体就是通篇大段的文字。对于这种看似简单的文字堆砌的页面，有没有人抱怨过：“这样的页面还需要出效果图啊?”作为网页设计师的你是怎样处理这样的界面的?把握5元素，让页面文字阅读更舒适设计师好文分享第1张是习惯性的使用宋体字或者微软雅黑?是直接设为12px或者14px的字号?你有想过为

Public @ 2019-08-28 15:45:19

页面秒打开，留住用户快人一步

百度搜索对用户行为的研究表明，用户对于页面的打开速度要求越来越高，首屏的加载时间过长会加速用户的流失。通过调研，小编发现部分站点和智能小程序页面加载速度慢的主要原因分别是页面关键子资源耗时严重和图片体积过大。为了方便开发者进行优化，小编特地邀请技术同学总结了优化方法给大家参考。【站点页面关键子资源耗时严重的优化方案】01清除不必要的资源及阻塞渲染的JS/CSS页面中往往会包含一些冗余资源，影响性能

Public @ 2015-09-17 15:37:03

WEB站点性能优化实践（加载速度提升2s）

感谢大CC的投稿：进行优化前，关键是剖析当前的web性能，找到性能瓶颈，从而确定最需改进的地方;如果精力有限，首先将精力放在能明显提升性能的改进点上;《高性能网站建设指南》提出了一个性能黄金法则：只有10%-20%的最终用户响应时间花在了下载HTML文档上;其余的80%-90%的时间花在了下载页面中的所有组件上。由于本文将实施一个完整的优化流程，所以，我们还是从后台开始;案例说明：优化之前的网站规

Public @ 2011-10-26 15:37:11

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[ DB ] CONNECT:[ UseTime:0.024250s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.017476s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.016255s ]
[ 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:0.017354s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.016146s ]
[ 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:0.017469s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6271 LIMIT 1 [ RunTime:0.016239s ]
[ 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:0.016614s ]
[ 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:0.016789s ]
[ 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:0.017488s ]
[ 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` = 6271 LIMIT 1 [ RunTime:0.016174s ]
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[ SQL ] update `ob_article` set views=views+2 where id=6271 [ RunTime:0.017833s ]
[ 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:0.025785s ]
[ 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` = '威海网站建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.051761s ]
[ 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` = '威海网站访问速度' AND `status` <> -1 LIMIT 1 [ RunTime:0.025776s ]
[ 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` = '威海网站访问速度' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.046043s ]
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