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How do I get the current time zone of MySQL?
...of functions that get the time right now, such as now(), unix_timestamp(), etc.; it doesn't tell you anything about what timezone the dates in the database data are using. You might choose to assume they were written using the server's timezone, but that assumption may well be flawed. To know the ti...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试不同的参数），最后选择在交...
nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
...Thanks for digging into this and providing an explanation to why deleting /etc/nginx/sites-available/default helps with the above error.
– Oliver
Mar 18 '13 at 11:31
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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时性较差。虽然可以通过加快轮询频率的方式来缓解这个问题，但相应付出的代价也不小：一来会使负载居高不下，二来也会让带宽捉襟见肘。
再来说说Long Polling，如果使用传统的LAMP技术去实现的话，大致如下所示：
Long Pol...
When to use static vs instantiated classes
...cally use objects when working with unique things like a photo, user, post etc and use static when its meant for general things?
– Robert Rocha
Apr 2 '16 at 21:29
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How to remove the querystring and get only the url?
...is a specific reason like better performance, lack of unneeded dependency, etc).
– RiaD
Dec 10 '15 at 17:53
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廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...同时读写可能会有IO异常,导致drbd设备失效
为了解决这个问题则使用 gfs + cman 实现分布式文件锁方案
3.3安装cman
yum –y cman
3.4 gfs集群文件系统
在 /usr/local/drbd-utils-8.9.4/etc/drbd.conf
在配置文件的 net 选项中
all...
“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...
...自提的鲜果说，还是送菜上门的七天买菜网，都因为价格问题导致的盈利困境而歇业，价格是上门送菜的最大障碍，要么狂砸补贴，要么把量做大，维持开支，没有别的路。笔者接触过一些做上门送菜的创业者，往往会问第一个...
Converting timestamp to time ago in PHP e.g 1 day ago, 2 days ago…
...on:
it works for future dates and will return something like in 2 months etc.
you can use localization to get other languages and the pluralization works fine
if you will start using Carbon for other things working with dates will be as easy as never.
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Difference between array_push() and $array[] =
...available at hand, unless it severely cripples readability, compatibility, etc (or if you need to obey certain style guides).
– Chris Kraszewski
Jul 10 '17 at 12:28
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