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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

...pending on the size of your project, you may also want the message passing component separate from your database, so that if one component experiences heavy load, it need not hinder the other's operation. As for the problems you mentioned: polling keeping the database buzy and low performing: Usi...
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Argparse: Required arguments listed under “optional arguments”?

... and --bar indicate optional arguments, which can always be omitted at the command line. Note: Required options are generally considered bad form because users expect options to be optional, and thus they should be avoided when possible. That being said, the headers “positional arguments”...
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iOS: Access app-info.plist variables in code

... As mentioned by @Answerbot in this post:stackoverflow.com/a/4059118/1210822 : "CFBundleVersion has been repurposed to be Build and Version is CFBundleShortVersionString", so now for retrieving the version number from plist, we need to use: NSString *version = [[NSBundle mainBund...
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Where can I find and submit bug reports on Google's Chrome browser?

...the Google build of Chrome, you could use the built-in reporting at google.com/support/forum/p/Chrome/… . The issue you've described, sounds like its not specific to the official build, but to the actual chrome project, so it might benefit to have that reported in Chromium itself. ...
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Detect if homebrew package is installed

...omebrew packages are installed in the system. Is there a way to use a brew command to achieve that? 4 Answers ...
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Express res.sendfile throwing forbidden error

...ad. Unless you specify the root directory parameter, as seen here: github.com/visionmedia/express/issues/1465 – Joe Aug 6 '13 at 10:51 2 ...
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How to show loading spinner in jQuery?

...rt and ajaxStop are jQuery events so you can namespace them: stackoverflow.com/questions/1191485/… docs.jquery.com/Namespaced_Events – David Xia Apr 16 '11 at 22:57 10 ...
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What is Python buffer type for?

... For memory usage see stackoverflow.com/questions/110259 for example. Sometimes it's easiest just to watch Python's usage in Task Manager/Activity Monitor/top. – Scott Griffiths Aug 6 '10 at 17:15 ...
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Which MIME type to use for a binary file that's specific to my program?

... I'd recommend application/octet-stream as RFC2046 says "The "octet-stream" subtype is used to indicate that a body contains arbitrary binary data" and "The recommended action for an implementation that receives an "application/octe...
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Android equivalent to NSNotificationCenter

...ng an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding. ...