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新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...用性更高的架构。
最近的服务升级，我们为Elasticsearch安装了HDFS Snapshot插件，可以定期将index备份到HDFS，这个功能目前主要用于备份Kibana的配置index，用以恢复用户查看或配置可视化界面时的错误操作。
监控报警方面，System...
How do you get the magnitude of a vector in Numpy?
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numpy.linalg.norm contains safeguards against overflow that this implementation skips. For instance, try computing the norm of [1e200, 1e200]. There is a reason if it is slower...
– Federico Poloni
May 9 '18 ...
how do I make a single legend for many subplots with matplotlib?
...iable to put in the argument for legend ?
– patapouf_ai
Apr 10 '17 at 12:51
1
@patapouf_ai lines ...
腾讯Tencent开源框架介绍（持续更新） - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...采用C++编写，跨语种的RPC采用类似protobuf通信模式。源码安装部署请参考：
https://tarscloud.github.io/TarsDocs/installation/source.html，不得不说他们的文档写的还是非常详细的。
安装完成是这样的：
管理平台：
服务的开发及框...
Add custom icons to font awesome
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Hi, I have generated font icons with a folder containing svg icons. But later i want to add a single icon to that , Is it possible to add ? or again i have to generate with the folder?.
– Varadha31590
Mar 3 '16 at 12:24
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What is the best way to detect a mobile device?
...f(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|wind...
How does Dijkstra's Algorithm and A-Star compare?
I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm.
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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...nux 系统是没有 vmstat 这个命令的，如果你要使用它，必须安装一个包名叫 sysstat 的程序包。命令格式常用用法如下：
# vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
r b swpd free inact active si so bi ...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...th many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
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Need for predictable random generator
...ndomness in small runs of some games is undesirable -- it does seem too unfair for some use cases.
I wrote a simple Shuffle Bag like implementation in Ruby and did some testing. The implementation did this:
If it still seems fair or we haven't reached a threshold of minimum rolls, it returns a...