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TokuMX vs. MongoDB 性能对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...产数据2亿多条导入测试
先建集合,创建3个索引,包括_id共4个索引。
TokuMX 5个多小时导完数据,官方MongoDB 2.2.4版本竟然花了2天2夜多,近58个小时
使用mongostat统计,每分钟取值一个,纵坐标为inserts/s,横坐标为分钟。
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Xenocode Postbuild 2010 for .NET 混淆工具的详细使用步骤 - 更多技术 - ...
...经被破解了,而且有序列号http: www.tsingfun.com html 2016 soft_0526...1,首先我们需要去下载这个工具,这里有一个下载的网址,已经被破解了,而且有序列号
https://www.tsingfun.com/down/soft/72.html
下载到本地---解压:如下
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PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connec...
PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connect()之解决方法【问题描述】PHP测试连接MySQL的程序如下:<?php$host='localhost';$user_name='root';$password='mysql';$conn=m...【问题描述】
PHP测试连接MySQL的程序如下:
<?php
$host='localh...
Linux平台编译curl:checking run-time libs availability... failed - 更...
...在/usr/local/lib目录下,其他的在/usr/lib64),
export LD_LIBRARY_PATH=/usr/local/lib:/usr/lib64:$LD_LIBRARY_PATH
再次configure,成功!显示各个模块的支持情况如下
curl version: 7.37.1
Host setup: x86_64-unknown-linux-gnu
Install prefix: /usr/lo...
PHP连接MySQL报错:Fatal error: Call to undefined function mysql_connec...
...
PHP测试连接MySQL的程序如下:
<?php
$host='localhost';
$user_name='root';
$password='mysql';
$conn=mysql_connect($host,$user_name,$password);
if (!$conn)
{
die('数据库连接失败:'.mysql_error());
}
echo '数据库连接成功!';
if (mysql_close($conn))
{
...
server { # 我们都知道(我们都应该知道),443是 https 的默认端口 list...
...p; listen 443 ssl;
server_name www.your-domain.com;
# 你要有证书,才能 https,免费申请一个吧,七牛云,阿里云都有免费一年的证书
ssl_certificate /home/ssl_certif...
您好,如果我想设置如果到某个时间就显示文字,怎么做 - App Inventor 2 中...
...:37,当这个文本是你想要的时间点时,就做那要做的事{:8_368:}获取当前时间和格式化,参考:https://bbs.tsingfun.com/thread-1534-1-1.html引用: App Inventor 2 发表于 2024-03-22 19:09
获取当前时间和格式化,参考:https://bbs.tsingfun.com/for...
How do I build a numpy array from a generator?
... lists. This is necessary so that space for each item can be consecutively allocated in memory. Consecutive allocation is the key feature of numpy arrays: this combined with native code implementation let operations on them execute much quicker than regular lists.
Keeping this in mind, it is techni...
Python ValueError: too many values to unpack [duplicate]
...
for k, m in self.materials.items():
example:
miles_dict = {'Monday':1, 'Tuesday':2.3, 'Wednesday':3.5, 'Thursday':0.9}
for k, v in miles_dict.items():
print("%s: %s" % (k, v))
share
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Make a negative number positive
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Note the edge cases, e.g. Math.abs(Integer.MIN_VALUE) = Integer.MIN_VALUE.
– Zach Scrivena
Jan 30 '09 at 0:24
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