准备阶段：

1. UltraEdit v14.10.0.1023 绿色版下载地址：http://www.greendown.cn/soft/737.html

2. 从ue官方网站下载wordfile扩展文件包：ALL WORDFILES IN ONE PACKAGE，
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pba化妆品旗舰店

先要配置好 ssh 的 key ，然后安装：
apt-get install pssh

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放着备查

–b 当file存在并且是块文件时返回真
-c 当file存在并且是字符文件时返回真
-d 当pathname存在并且是一个目录时返回真
-e 当pathname指定的文件或目录存在时返回真
-f 当file存在并且是正规文件时返回真
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韩都衣舍旗舰店

恩,又一个知识忘记了..看来要常做备忘才行…

explain 显示的filesort不是说”因为数据太大,内存不够,然后在文件中排序”..filesort的意思是”排序没有使用到索引“,跟文件(file)没啥关系..

当然了,sort这个不会是错的,算法是用quicksort,也就是快速排序

XMemcached 1.2.0-RC2 released,main highlights:

1、支持Kestrel。Kestrel是一个scala编写的简单高效的MQ，它是Twitter发布的开源产品，支持memcached协议，但并不完全兼容。更多信息看这里。Xmemcached提供了一个KestrelCommandFactory，用于对kestrel特性的支持。
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memcached: Benchmark of 4 Python libraries

Optimizations, don’t we just love them! Unfortunately most micro optimizations aren’t worth doing. The optimizations that are worth doing are those that affect everything… And if you use memcached, then memcached affects everything In this blog post I present a benchmark of 4 most popular Python memcached libraries (one of them pure Python, the 3 others C wrappers).

As my benchmark shows, there are lots of gains, basically you can speed up your memcached operations by 2x times – which is REALLY hard to do with any other optimization.

There are currently 4 Python memcached libraries and there aren’t any good benchmarks of these, so I have set a goal to benchmark these. The candidates:

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Tornado – The fastest WSGI server?

Tornado is a non-blocking web server from the FriendFeed hackers. There are different hello world benchmarks, but none that are really interesting to me since all of my web-applications are WSGI applications.

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昨天Facebook推出了Tornado，一项实时互联网架构技术。Facebook的开源社区负责人Dave Recordon说：
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dell官网服务器配置地址:Dell PowerEdge R410机架式服务器产品详细信息

http://www1.ap.dell.com/cn/zh/pub/Servers/server-poweredge-r410/pd.aspx?refid=server-poweredge-r410&s=pub

最新驱动地址:NetXtreme II 1 Gigabit Drivers

http://zh-cn.broadcom.com/support/ethernet_nic/netxtremeii.php

主要问题是:
1.网卡会自动掉线，手动更新驱动可以解决。
2.硬盘驱动也有问题,而且yum更新内核不能重启.直接报错.
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Vulnerability Note VU#180065
Nginx ngx_http_parse_complex_uri() buffer underflow vulnerability
Overview
A vulnerability in the nginx web server may allow remote attackers to execute arbitrary code on an affected system.
I. Des-c-r-i-p-tion
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