-- Dan Wilson <d...@codeality.com> wrote
(on Thursday, 18 December 2008, 01:21 PM -0700):
> I've added Zend_Cache to my project, but have multiple environments.
> I'm using memcache as my backend, but only in one environment. In the
> other environment, I don't want caching enabled at all. When I try to
> disable caching however, it still tries to instantiate the Memcache
> object. I don't have memcache on that machine and so it barfs on me.
>
> Why doesn't the caching enabled flag prevent this? It looks to me
> like we might need an additional caching enabled flag for the backend
> as well as the frontend.
>
> Any thoughts?
I'm not sure why it works this way, actually; hopefully Fabien will be
able to fill us in on that.
As for using multiple environments... I made some changes to Zend_Cache
for either 1.7.0 or 1.7.1 that fixes an issue that existed when using
configuration -- basically, prior to the fix, you couldn't have specify
different frontend/backend combinations in your config file because the
differing options between them would cause exceptions to be raised. The
fix now ignores options that don't exist for the given adapter.
This allows you to do something like the following:
[production]
cache.frontendName = "Core"
cache.frontendOptions.caching = false
cache.frontendOptions.lifetime = 900
cache.frontendOptions.automatic_serialization = true
cache.frontendOptions.automatic_cleaning_factor = 20
cache.backendName = "File"
cache.backendOptions.cache_dir = APPLICATION_PATH "/../data/cache/files"
cache.backendOptions.read_control = false
cache.backendOptions.file_name_prefix = "cache"
[development : production]
cache.frontendOptions.caching = false
cache.backendName = "Sqlite"
cache.backendOptions.cache_db_complete_path = APPLICATION_PATH
"/../data/cache/cache-dev.db"
cache.backendOptions.automatic_vacuum_factor = 20
[testing : production]
cache.frontendOptions.caching = false
cache.backendName = "Sqlite"
cache.backendOptions.cache_db_complete_path = APPLICATION_PATH
"/../data/cache/cache-test.db"
cache.backendOptions.automatic_vacuum_factor = 20
Note that I have a different backend in production than in development
or testing. Using this approach, you can specify memcached for your
production environment, and then use File or Sqlite for the other
environments -- and have no ill effects due to lack of available
services.
--
Matthew Weier O'Phinney
Software Architect | matt...@zend.com
Zend Framework | http://framework.zend.com/
