大约有 40,000 项符合查询结果（耗时：0.0503秒） [XML]
What's the best way of scraping data from a website? [closed]
...negligence here is very unethical since this can be considered a denial of service attack. The acceptable rate varies depending on who you ask, 1req/s is the max that the Google crawler runs at but you are not Google and you probably aren't as welcome as Google. Keep it as slow as reasonable. I woul...
What are the differences between the threading and multiprocessing modules?
...ing "background tasks" without stopping the main thread from continuing to service network packets or GUI events. And that works just fine with Python threads. (In technical terms, this means Python threads give you concurrency, even though they don't give you core-parallelism.)
But if you're writi...
What is the most ridiculous pessimization you've seen? [closed]
...his database.
Me: Uh huh. So the consultant who sells database re-design services thinks we need a database re-design....
The conversation went on and on like this. Afterward, I took another look at the table in question and determined that it probably could be narrowed with some simple normaliza...
What's is the difference between include and extend in use case diagram?
...adding parts to existing use cases as well as for modeling optional system services" (Overgaard and Palmkvist, Use Cases: Patterns and Blueprints. Addison-Wesley, 2004).
This reads to me as:
Include = reuse of functionality (i.e. the included
Node.js Best Practice Exception Handling
...both sync and async errors and forward to the middleware
try {
customerService.addNew(req.body).then(function (result) {
res.status(200).json(result);
}).catch((error) => {
next(error)
});
}
catch (error) {
next(error);
}
//Error handling middleware, we delegate t...
How to bring back “Browser mode” in IE11?
...the things most devs need to test, and replacing it with cludgy VMs or pay services. Color me not impressed. And I am one of the Microsoft supporters, work primarily in a .NET shop. And I think this is DUMB.
– LocalPCGuy
Aug 6 '13 at 7:06
...
Avoid synchronized(this) in Java?
...e it as synchronized. Let's also imagine that you provide a public hosting service based on your container implementation.
I'm your customer and deploy my "good" servlet on your site. It happens that my code contains a call to getAttribute.
A hacker, disguised as another customer, deploys his mali...
How is AngularJS different from jQuery
... structures and concepts that apply to various projects, like Controllers, Services, and Directives. jQuery itself can be used in multiple (gazillion) ways to do the same thing. Thankfully, that is way less with Angular.Js, which makes it easier to get into and out of projects. It offers a sane way ...
What happens when a computer program runs?
...ed the address at 0x21*4 and far-jumped to that
| | location to service the interrupt.
+-----------+ 0x0
You can see that DOS allowed direct access to the operating system memory, with no protection, which meant that user-space programs could generally directly access or overwrite anyth...
高并发服务端分布式系统设计概要 - C/C++ - 清泛网 - 专注C/C++及内核技术
...预才能修复。在GFS + Bigtable里，这个Global Heartbeat叫做Lock Service。
现在接着设计我们的“山推”系统。有了前面两篇的铺垫，我们的系统现在已经有了五脏六腑，剩下的工作就是要让其羽翼丰满。那么，是时候，放出我们的“...