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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...组由10多人构成,一部分是对商业产品,核心增长指标做监控,挖掘和改进。一部分是搭建数据仓库完善跟各个部门的无缝数据流动,也用到很多技术例如使用 Scalding编写Hadoop MapReduce程序,也有人做AB testing框架, 推荐系统,尽...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的繁忙程度。因此,我们需要一个任务分配系统,其还能监控各个服务器的负载情况。
任务分配服务器有一些难点:
负载情况比较复杂。什么叫忙?是CPU高?还是磁盘I/O高?还是内存使用高?还是并发高?还是内存换页率高...
TCP 的那些事儿(下) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...主要对TCP Reno 做了些修改。这个算法通过对RTT的非常重的监控来计算一个基准RTT。然后通过这个基准RTT来估计当前的网络实际带宽,如果实际带宽比我们的期望的带宽要小或是要多的活,那么就开始线性地减少或增加cwnd的大小...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...,DisconnectData将被调用,在这里,可以释放对这个主题的监控,并不再为其获取新数据。
Heartbeat
确定RTD Server是不是依然可用,0和负数代表不可用,1代表可用。Excel会调用此方法确定服务是否断连。
RefreshData(TopicCount)
TopicCount...
Best way to check if a URL is valid
...
You can use a native Filter Validator
filter_var($url, FILTER_VALIDATE_URL);
Validates value as URL (according to » http://www.faqs.org/rfcs/rfc2396), optionally with required components. Beware a valid URL may not specify the HTTP protocol http:// so further validatio...
Laravel: Get base url
...t the answer seems quite hard to come by. In Codeigniter, I could load the url helper and then simply do
17 Answers
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Python : List of dict, if exists increment a dict value, if not append a new dict
...ary, this is easy:
# This example should work in any version of Python.
# urls_d will contain URL keys, with counts as values, like: {'http://www.google.fr/' : 1 }
urls_d = {}
for url in list_of_urls:
if not url in urls_d:
urls_d[url] = 1
else:
urls_d[url] += 1
This code f...
How do I find the absolute url of an action in ASP.NET MVC?
...tension methods. It's already baked in, just not in a very intuitive way.
Url.Action("Action", null, null, Request.Url.Scheme);
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Manipulate a url string by adding GET parameters
I want to add GET parameters to URLs that may and may not contain GET parameters without repeating ? or & .
15 Answe...
How to remove the querystring and get only the url?
Im using PHP to build the URL of the current page. Sometimes, URLs in the form of
16 Answers
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