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Where are my postgres *.conf files?
....0
#checkpoint_warning = 30s # 0 disables
# - Archiving -
#archive_mode = off # allows archiving to be done
# (change requires restart)
#archive_command = '' # command to use to archive a logfile segment
#archive_timeout = 0 # force a logfile segment switch a...
Tactics for using PHP in a high-load site
...completely different as well.
Databases
Don't use MySQLi -- PDO is the 'modern' OO database access layer. The most important feature to use is placeholders in your queries. It's smart enough to use server side prepares and other optimizations for you as well.
You probably don't want to break your...
Why cast unused return values to void?
...
@CiroSantilli巴拿馬文件六四事件法轮功: .... that is an interesting question. Currently, I don't know the answer to that. Please shared with me if you get know it anyhow.
– Nawaz
Jul 25 '16 at 9:08...
【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...-area: auto/auto/auto/span 3;
}
……
因代码过长，完整代码与文件 可进入粉丝群获取 ！
三、rem 布局
1、rem 如何适配
rem 是相对于 html 根元素的字体大小的单位。
我们通过修改 html 中 font-size 的字体大小来控制 rem 的大小。
比...
ab load testing
...d I consider an average response time valid if it is 2 seconds". Then just modify your -c level until you are hitting 2 seconds of average response time (but make sure the max response time and stddev is still valid) and see how big you can make -c.
I hope I explained this clear :) Good luck
...
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
...时日志分析的价值。为用户做好服务也不是修改几个配置文件，调优几个程序运行参数就能搞定的。为了提供更好的服务，我们在下面三个方向做了努力：
一、提升服务质量
我们首先做了Elasticsearch优化，Hardware Level由于我们...
Expand a random range from 1–5 to 1–7
...re are four big holes: (2..5), (7..10), (12..15), (17..21). Finally you do mod 7 and add 1, giving (2, 7, 5, 3, 1). So neither 4 nor 6 ever occur. But (see above shortcut) we knew there could only be 5 numbers in the resulting range all along, so there had to be two gaps.
– Dan...
What is the difference between a 'closure' and a 'lambda'?
... }
//filter for even numbers
filter([0,1,2,3,4,5,6], lambda(x) {return (x mod 2 == 0)});
A closure may be a named or anonymous function, but is known as such when it "closes over" variables in the scope where the function is defined, i.e., the closure will still refer to the environment with any...
Why is the order in dictionaries and sets arbitrary?
...7, hash('foo') is -4177197833195190597, hash('bar') is 327024216814240868. Modulo 8, that means these two keys are slotted in slots 3 and 4 then:
>>> hash('foo')
-4177197833195190597
>>> hash('foo') % 8
3
>>> hash('bar')
327024216814240868
>>> hash('bar') % 8
4
...
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...= new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYear()); 跟着...