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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...这对大多数应用来说都可以容忍了。从1.9.2+，mongodb都会默认打开journal功能，以确保数据安全。而且journal的刷新时间是可以改变的，2-300ms的范围,使用 –journalCommitInterval 命令。Oplog和数据刷新到磁盘的时间是60s，对于复制来...
Best way to center a on a page vertically and horizontally? [duplicate]
...used a lot this method... but, problem come if element is much higher then screen height (where height is unknown) ... top of centered element would be cut. Even if element is putted in parent element where overflow is set to auto or scroll. Same problem using flex. Unfortunately, like last resort I...
What's the UIScrollView contentInset property for?
...good iOS Reference Library article on scroll views that has an informative screenshot (fig 1-3) - I'll replicate it via text here:
_|←_cW_→_|_↓_
| |
---------------
|content| ↑
↑ |content| contentInset.top
cH |content|
↓ |content| contentInset.bottom
|content| ↓
--...
Choosing a Java Web Framework now? [closed]
... far with coding and configuration to get a simple crud application on the screen with Spring (though Spring 3 has made it a lot easier).
Spring Security is awesome but it comes at the cost of complexity. Play's security module is very very simple and covers the needs of probably 90% of applications...
When should I use double instead of decimal?
...per precision here because I eventually round to an Int for drawing on the screen.
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With bash, how can I pipe standard error into another process?
... >(process2)
Here is a concrete example that sends stderr to both the screen and appends to a logfile
sh myscript 2> >(tee -a errlog)
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OAuth with Verification in .NET
...Replace(snip,"(?s)[^0-9]*([0-9]+).*", "$1").Trim();
That's a bit of HTML screen scraping.
After grabbing the pin, you don't need the web browser any more, so:
webBrowser1.Visible = false; // all done with the web UI
...and you might want to call Dispose() on it as well.
The next step is ...
How to save an activity state using save instance state?
...fectively makes onSaveInstanceState almost useless except just for case of screen orientation changes. In almost all other cases, you can never rely on it and will need to manually save your UI state somewhere else. Or preventing your app from being killed by overriding BACK button behavior. I don't...
Meaning of Choreographer messages in Logcat [duplicate]
... at which invalidated views are re-drawn (and animations tweened) with the screen vsync - typically 60fps.
The warning about skipped frames looks like an afterthought: The message is logged if a single pass through the 3 steps takes more than 30x the expected frame duration, so the smallest number ...
How can a time function exist in functional programming?
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-1: I'm unhappy with the RealWorld smoke screen. Yet, the most important thing is how this purported object is passed on in a chain. The missing piece is where it starts, where the source or connection to the real world is -- it starts with the main function which r...