How to make Voting api not cache
The function votingapi_add_results() is responsible for writing records to the votingapi_cache table. Immediately afterwards, it invokes hook_votingapi_results() which any module can use to wipe out the table.

For example: 

/**
 * Implements hook_votingapi_results().
 */
function MYMODULE_votingapi_results() {
  db_truncate('votingapi_cache')-&gt;execute();
}