Are you using custom caching or built-in ? I've never had problems with component cache.

I've put your snippet inside com_content and it worked despite cache was on.

You can delete all site cache via model:

JModelLegacy::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_cache/models', 'Cache');
$model = JModelLegacy::getInstance('Cache', 'CacheModel');
$model->clean();
//$model->clean('_system'); SYSTEM_CACHE_ONLY

This is equivalent to:

$cache = JCache::getInstance('', 
            [
                'defaultgroup'=>'',             
                'cachebase' => JPATH_SITE.'/cache' or JPATH_ADMINISTRATOR for admin cache
            ]);
$cache->clean();

System cache will rebuild _system as quick as you hit administrator area again :)

Are you using custom caching or built-in ? I've never had problems with component cache.

I've put your snippet inside com_content and it worked despite cache was on.

You can delete all site cache via model:

JModelLegacy::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_cache/models', 'Cache');
$model = JModelLegacy::getInstance('Cache', 'CacheModel');
$model->clean();
//$model->clean('_system'); SYSTEM_CACHE_ONLY

This is equivalent to:

$cache = JCache::getInstance('output', 
            [
                'defaultgroup'=>'',             
                'cachebase' => JPATH_SITE.'/cache' or JPATH_ADMINISTRATOR for admin cache
            ]);
$cache->clean();

System cache will rebuild _system as quick as you hit administrator area again :)

Are you using custom caching or built-in ? I've never had problems with component cache.

I've put your snippet inside com_content and it worked despite cache was on.

You can delete all site cache via model:

JModelLegacy::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_cache/models', 'Cache');
$model = JModelLegacy::getInstance('Cache', 'CacheModel');
$model->clean();
//$model->clean('_system'); SYSTEM_CACHE_ONLY

Are you using custom caching or built-in ? I've never had problems with component cache.

I've put your snippet inside com_content and it worked despite cache was on.

You can delete all site cache via model:

JModelLegacy::addIncludePath(JPATH_ADMINISTRATOR.'/components/com_cache/models', 'Cache');
$model = JModelLegacy::getInstance('Cache', 'CacheModel');
$model->clean();
//$model->clean('_system'); SYSTEM_CACHE_ONLY

This is equivalent to:

$cache = JCache::getInstance('', 
            [
                'defaultgroup'=>'',             
                'cachebase' => JPATH_SITE.'/cache' or JPATH_ADMINISTRATOR for admin cache
            ]);
$cache->clean();

System cache will rebuild _system as quick as you hit administrator area again :)