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    <p>Do you use Firefox's <a href="https://getfirebug.com/network" rel="nofollow noreferrer">Firebug</a>?</p> <p>Firebug has a "Net" panel with an "XHR" filtered view. You should be able to inspect the cache info via the request phase bar, checking the status and/or clicking the triangle to inspect "Headers".</p> <blockquote> <a href="https://getfirebug.com/network" rel="nofollow noreferrer">Cached or not cached</a> <p>Not all network requests are equal - some of them are loaded from the browser cache instead of the network. Firebug provides status codes for every request so you can quickly scan and see how effectively your site is using the cache to optimize page load times.</p> </blockquote> <p>Firebug <a href="https://getfirebug.com/wiki/index.php/Net_Panel" rel="nofollow noreferrer">Net Panel docs are here</a>.</p> <p>Chrome/Safari/Opera all have similar debugging tools. Just found a <a href="http://www.browserstack.com/debugging-tools" rel="nofollow noreferrer">good list here</a> (most should have tools to inspect XHR).</p> <hr> <h3>EDIT:</h3> <p>In order to somewhat redeem myself...</p> <p>As <a href="https://stackoverflow.com/a/13783596/922323">ibu has answered</a>, I'd also start by checking the status code of the response.</p> <p>If you're using jQuery:</p> <blockquote> <p><a href="http://api.jquery.com/jQuery.ajax/" rel="nofollow noreferrer">statusCode(added 1.5)</a> Map Default: {} A map of numeric HTTP codes and functions to be called when the response has the corresponding code. For example, the following will alert when the response status is a 404:</p> <pre><code>$.ajax({ statusCode: { 404: function() { alert("page not found"); } } }); </code></pre> <p>If the request is successful, the status code functions take the same parameters as the success callback; if it results in an error, they take the same parameters as the error callback.</p> </blockquote> <p>jQuery sure does make life easy. :)</p>
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    1. POHow to tell if an XMLHTTPRequest hit the browser cache
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    1. COI'd imagine OP is talking about checking from within a JavaScript program.
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    2. COAh, my mistake. :)
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    3. COI just updated the post to make that clear. Thanks for your answer, anyway!
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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