Joomla自定义模块的TTL缓存

Please, help me... I can not set the TTL cache for the Joomla module. This is -

$cache->setLifeTime(20);

• not working.

My code:

$cache = & JFactory::getCache('my_custom_mod', '');
$cacheKey = (string)$urls->serialize();

if (!($data = $cache->get($cacheKey))){
    foreach ($urls as $i => $url){
        $data[$i] = file_get_contents($url);
    }
    $cache->setLifeTime(20);
    $cache->store($data, $cacheKey);
}

Any ideas? Thanks for your advice.

solved

$cache = JFactory::getCache('mod_jexchange_rates_cbr', ''); // Any unique name $cache->setCaching(true); // Force cache enable. If caching is disabled though, that would be why your data isn’t actually writing to cache. If you need it to persist regardless of global cache setting. $cache->setLifeTime(60); //Minutes