Bypass cache when add to cart ?

[Guillaume Quintard]

On Dec 23, 2015 20:51, "Xavier Cardil Coll" <info at elsitar.com> wrote:
>
> No one knows then ? Not even a hint or something ?
>
> 2015-12-23 13:15 GMT+01:00 Xavier Cardil Coll <info at elsitar.com>:
>>
>> Also, how to write a function to bypass cache entirely when a user logs
in ?
>>
>> 2015-12-23 12:39 GMT+01:00 Xavier Cardil Coll <info at elsitar.com>:
>>>
>>> On Nginx cache, you can do this to avoid keep on caching when you add
something to the cart in Woocommerce :
>>>
>>> Skip cache for WooCommerce query string
>>>
>>> if ( $arg_add-to-cart != "" ) {
>>>       set $skip_cache 1;
>>> }
>>>
>>> Skip cache when WooCommerce cart is not empty
>>>
>>> if ( $cookie_woocommerce_items_in_cart != "0" ) {
>>>     set $skip_cache 1;
>>> }
>>>
>>> How can you do this in Varnish ? With this config, wich was made
specifically for Wordpress + Woocommerce, when you add something to cart,
cache is not disable store wide so you get a mix of cached and non cache
pages, cart gets emptied : http://pastebin.com/TuYeMtUZ
>>>
>>>
>>> --
>>>
>>> ELSITAR
>>>
>>>
>>
>>
>>
>> --
>>
>> ELSITAR
>>
>>
>
>
>
> --
>
> ELSITAR
>
>
>
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Chill out, most of the people are in vacation :-)

So, in varnish, by default, if the request contains a cookie, the cache is
bypassed.

But you can also force a pass, for example if the request contains a
"foo-bar" header like so :

sub vcl_recv {
   if (req.http.foo-bar) {
      return (pass);
   }
}

For your needs, look at the query string and cookie vmods, it will allow to
really fine-tune your workflow.

And should you need more help, we are here :-)
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