Tutorial / Help On Cache Functions

[Bluedge]

I'm a bit confused about the best way to use the cache functions (Module and Tools classes)

Let say:

I have a simple module that displays the product on the day on the homepage

1. I make a query to the Database to retrieve the product

2. I return the result to a tempate product_of_the_day.tpl

 

I would like to understand how to cache the result and the template for the current day.

I have tried a strategy based on this :$this->_clearCache('product_of_the_day.tpl', $this->getCacheId(date('z'))); but it seems to never be cached.

 

Can someone explain me the proper strategy to control the caching system or point me to a google tutorial on the web?

Thanks

[NemoPS]

I do have a lesson on cache in my modules course, but if you are only interested in that I guess it's a bit expensive. You need to set the cache with

return $this->display(__FILE__, 'leftColumn.tpl', $this->getCacheId('leftColumn'));

(leftColumn is just an example)

When you display a file, then you can check with isCached on the same method,

[Bluedge]

Hi Nemo1,

This is what i'm doing but checking with isCached always return false. (Actually returns nothing but I cast it with (int) )

[NemoPS]

Wait, what's your presta version? My local 1.6.1 doesn't work for example, it's bugged

[Bluedge]

Version is 1.6.0.14

[NemoPS]

See if any default module works (like homefeatured)
But being so close to 1.6.1 it might be bugged
Of course, make sure caching is enabled in the bo

Edited January 13, 2016 by Nemo1 (see edit history)

[Bluedge]

Any patch yet ?

[NemoPS]

my 1.6.1.2 works