Patterns for clearing Zend Cache -

i started using zend cache (apc backend) , in terms of returning cached values instead of hitting database each time. however, heres problem:

$cache_key = 'getrebates_'.$operator_code;  if(pp_model_cacheservice::exists($cache_key)) {     $cached_values = pp_model_cacheservice::load($cache_key); } else {    //hits db        $cached_values = $this->getall($operator_code);    pp_model_cacheservice::save($cached_values, $cache_key); } return $cached_values; 

each operator has own rebates vary between operators, if change database , need clear rebates operators, how this?

i can use $cache->clean(), clear other caches (not rebate cache each operator). if loop through operators:

foreach($operator_codes $operator_code) {    $cache_key = 'getrebates_'.$operator_code;    $cache->delete($cache_key) } 

that seems alot of work cache. there way clear section of cache.

//something like: $section_key = 'getrebates'; $cache[$section_key][$operator_code]; $cache->clearsection($section_key); 

is there array structure apc cache or cache key/value based?

you can apply tags values stored in cache. way can delete cache entries have tag.

$cache->save($huge_data, 'myuniqueid', array('taga', 'tagb'));  // clear cache entries tag taga or tagc $cache->clean(   zend_cache::cleaning_mode_matching_tag,   array('taga', 'tagc') ); 

refer page: http://framework.zend.com/manual/en/zend.cache.theory.html , api details clean method of zend_cache_core: http://framework.zend.com/apidoc/1.11/