Can you please show us an example how to realize tagged-memcache-caching with
this new two-level backend?


Fabien MARTY wrote:
> 
> Hi,
> 
> Please have a look at the "TwoLevels" backend in 1.7 trunk (or in 1.7
> PR), it's want you want.
> 
> It does exactly this.
> 
> Feedback welcome
> 
> Regards,
> 
> Fabien
> 
> 
> 
> 
> On Wed, Oct 22, 2008 at 5:34 PM, Diabl0 <[EMAIL PROTECTED]> wrote:
>> Colin Guthrie pisze:
>>>
>>> Diabl0 wrote:
>>>>
>>>> Hi
>>>>
>>>> As i seen this topic was discussed later, but i have new idea that IMHO
>>>> can throw new light.
>>>>
>>>> What about combining memory cache backends with file cache fallback for
>>>> tags? Ofcorse optional if someone wants this.
>>>>
>>>> This should give us benefits from fast memory cache and tagging system
>>>> with only small drawback on performance needed to update (or retreive)
>>>> tags
>>>> cache from filesystem.
>>>>
>>>> And what you think about this idea?
>>>
>>> It's interesting but why use the filesystem? Why not use the cache
>>> itself
>>> but use a different key structure to track this (e.g. cache an array of
>>> keys
>>> that match the tag "wibble" under the key name
>>> "Zend_Cache-keymap-wibble"?
>>> This approach could be implemented in a base class and those backends
>>> not
>>> supporting tags could simple extend it. I've not looked at the
>>> intricacies
>>> of this from a data integrity point of view so there could be several
>>> reasons why this wouldn't work :)
>>
>> Filesystem was my first idea, but db and any other "solid" backend is
>> good.
>> Memcached and other memory based backends aren't good because it's
>> content
>> can be deleted in any time.
>>
>>> Also as a related issue, would it be possible to implement a cache
>>> invalidation queue system backed by a database? The reason I say this is
>>> when considering multi-server environments (let's assume there is one
>>> database for all servers).
>>
>>   See my post with Mao_Cache. I didn't tested it with DB yet, but i was
>> also
>> thinking about clustered enviroments.
>>
>> --
>> K.
>>
>>
> 
> 
> 
> -- 
> Fabien MARTY
> [EMAIL PROTECTED]
> 
> 

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