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社会化海量数据采集爬虫框架搭建 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...ache.commons.httpclient.methods.GetMethod; import org.apache.commons.lang.StringUtils; public class HttpCrawler { public static void main(String[] args) { String content = null ; try { HttpClient httpClient = new HttpClient(); ...
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What is the difference between an Azure Web Site and an Azure Web Role

... servers other users' sites. You can scale your site up and down (at some extra charge) to make it more elastic as your resource needs shift. share | improve this answer | f...
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What is the theoretical maximum number of open TCP connections that a modern Linux box can have

...a '64K' limit that is often cited, but that is per client per server port, and needs clarifying. Each TCP/IP packet has basically four fields for addressing. These are: source_ip source_port destination_ip destination_port < client > < server > Inside the...
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Python's “in” set operator

... This is not a very good test since string constants are often interned (try a = 'a'; b = 'a'; a is b). I tried it with a = (1, 2, 3); b = (1, 2, 3); a == b; hash(a) == hash(b); a is b; a in set([b]) instead. – Philipp Jan...
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ssh remote host identification has changed

I've reinstalled my server and I am getting these messages: 28 Answers 28 ...
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How to connect to Mysql Server inside VirtualBox Vagrant?

I mounted a new VirtualBox Machine with Vagrant, and inside that VM I installed Mysql Server. How can I connect to that server outside the vm? I already forward the port 3306 of the Vagrantfile , but when I try to connect to the mysql server, it`s resposts with the error: 'reading initial communica...
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GitHub Windows client behind proxy

...figuration() { WebProxy defaultProxy = WebProxy.GetDefaultProxy(); string str = defaultProxy.Address != (Uri)null ? defaultProxy.Address.ToString() : "(None)"; StartupLogger.log.Info((IFormatProvider)CultureInfo.InvariantCulture, "Proxy information: {0}", str); try { if (...
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Nginx 403 error: directory index of [folder] is forbidden

...t, including pretty ones. try_files $uri $uri/ /index.php?$query_string; } # Remove trailing slash to please routing system. if (!-d $request_filename) { rewrite ^/(.+)/$ /$1 permanent; } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:...
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Simplest way to detect a mobile device in PHP

... a mobile browser in PHP. The code detects a user based on the user-agent string by preg_match()ing words that are found in only mobile devices user-agent strings after hundreds of tests. It has 100% accuracy on all current mobile devices and I'm currently updating it to support more mobile devices...
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Is it possible to ping a server from Javascript?

...eck to see if remote servers are online or not. When I run it from the command line, my page load goes up to a full 60s (for 8 entries, it will scale linearly with more). ...