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Difference between Pragma and Cache-Control headers?

...a requests and the server receiving a request from the client. The http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.32 defines the scenario as follows: HTTP/1.1 caches SHOULD treat "Pragma: no-cache" as if the client had sent "Cache-Control: no-cache". No new Pragma directives wil...
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Do you have to put Task.Run in a method to make it async?

... var client = new HttpClient(); var html = await client.GetAsync("http://www.example.com/"); return html.Length; } So, the basic pattern of things is to have async code depend on "awaitables" in its await expressions. These "awaitables" can be other async methods or just regular methods return...
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What is the recommended approach towards multi-tenant databases in MongoDB?

...ere are no performance tradeoffs using lots of collections. See http://www.mongodb.org/display/DOCS/Using+a+Large+Number+of+Collections share | improve this answer | fol...
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Looking for a clear definition of what a “tokenizer”, “parser” and...

...he only book I could get my hands on (it being 1991, before Amazon and the WWW). I had that and a collection of text files produced by Jack W. Crenshaw called "LET'S BUILD A COMPILER" (thanks Jack!). This is still the book to get for a more complete understanding of the principles, but most programm...
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)

...ng Demi Magus's excellent instructions, I did something like this: cd /var/www/rails; rvm use ext-rbx-2.5.2@rails; SKB_FILE=/var/www/.secret_key_base; echo "export SECRET_KEY_BASE=$(RAILS_ENV=production rake secret)" > $SKB_FILE; . $SKB_FILE; echo ". $SKB_FILE" | tee -a ~/.bashrc ~/.bash_profile;...
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Pros and cons of AppSettings vs applicationSettings (.NET app.config / Web.config)

...xception messages are given. You can see/download the class here: http://www.drewnoakes.com/code/util/app-settings-util/ share | improve this answer | follow ...
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Java HTTPS client certificate authentication

...t; <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>some.examples&lt...
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jQuery: Return data after ajax call success [duplicate]

....com/domenic/3889970 http://promises-aplus.github.io/promises-spec/ http://www.html5rocks.com/en/tutorials/es6/promises/ Future of jQuery Future versions of jQuery (starting from 3.x - current stable versions as of May 2015 are 1.x and 2.x) will be compatible with the Promises/A+ specification (t...
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In Visual Studio C++, what are the memory allocation representations?

...ormation added to debug allocations. This table is more complete: http://www.nobugs.org/developer/win32/debug_crt_heap.html#table Address Offset After HeapAlloc() After malloc() During free() After HeapFree() Comments 0x00320FD8 -40 0x01090009 0x01090009 0x01090009 0x0109005A ...
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Which characters make a URL invalid?

... In your supplementary question you asked if www.example.com/file[/].html is a valid URL. That URL isn't valid because a URL is a type of URI and a valid URI must have a scheme like http: (see RFC 3986). If you meant to ask if http://www.example.com/file[/].html is a ...