Snippet displaying cached createdon data. (How to ensure data displayed is not from cache)

126 Posts

smcilreavy Reply #1, 15 years ago

Hi Guys,

I have a snippet that is pulling a number of resources and displaying them.

The snippet is using

$created = $x->get('createdon'); $age = time() - strtotime($created);

to get the documents created date.

I'm finding that often the snippet displays an old cached date / time even though im calling the snippet uncached.

I've tried adding

$modx->cacheManager->clearCache(array(
    '/resource'
));

at the top of the snippet, which seems to help, but...Is resource the best folder to clear?

If i take the approach of clearing cache each time the snippet is executed, and the snippet is used widely on the site doesnt that mean the cache is almost useless because its being cleared everytime a user hits the site?

Is there another approach to ensuring that the snippet will not display the cached version of data such as created date.

MODX Staff
10,725 Posts

opengeek Reply #2, 15 years ago

Don't cache the snippet call.

Jason Coward
Chief Architect @ MODX
http://www.jasoncoward.com | http://twitter.com/drumshaman | https://github.com/opengeek

126 Posts

smcilreavy Reply #3, 15 years ago

Hi opengeek,

The snippet call isnt't cached.

I'm thinking, it is possibly its a browser cache issue. I will look into a solution to not allowing a browser server a cached version of the page.

Stuart

MODX Staff
10,725 Posts

opengeek Reply #4, 15 years ago

I'm confused, createdon doesn't change so it doesn't matter if it is cached or not...

Jason Coward
Chief Architect @ MODX
http://www.jasoncoward.com | http://twitter.com/drumshaman | https://github.com/opengeek

126 Posts

smcilreavy Reply #5, 15 years ago

Hi Opengeek,

Im using createdon, creating a time stamp and using it to display X days since published or, x hours since published etc etc,

So Every time the user loads the page it should change to some degree.

It hasnt been changing with every load while I have been testing. Thats me reloading the same page frequently.

Have added this, hopefully will help.

<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Expires" content="0">

24,544 Posts

BobRay Reply #6, 15 years ago

This code works for me -- it changes every time I reload the page. You might see if it works for you to find out whether it's a browser cache issue:

<?php
$created = $modx->resource->get('createdon'); $age = time() - strtotime($created);

return $age;

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126 Posts

smcilreavy Reply #7, 15 years ago

Hi Bob,

Thanks for your response.

After looking into it I also saw that the page was checked as cacheable, unchecking that helped. That browser cache code didn't seem to do much.

Stuart