In this code in func.inc, it looks like RC is caching a message both to the
database and to the local temp directory. Why does it cache 2 times?
// let's cache the message body within the database
if ($CONFIG['enable_caching'] && $cached && ($CONFIG['db_max_length']
-300) > $headers->size)
{
$DB->query("UPDATE ".get_table_name('messages')."
SET body=?
WHERE user_id=?
AND cache_key=?
AND uid=?",
$msg_source,
$_SESSION['user_id'],
$cache_key,
$uid);
return $msg_source;
}
// create dir for caching
if (!is_dir($cache_dir))
$dir = mkdir($cache_dir);
else
$dir = true;
// attempt to write a file with the message body
if ($dir && ($fp = fopen($cache_path, 'w')))
{
fwrite($fp, $msg_source);
fclose($fp);
}
else
{
raise_error(array('code' => 403, 'type' => 'php', 'line' => __LINE__,
'file' => __FILE__,
'message' => "Failed to write to temp dir"), TRUE,
FALSE);
}
return $msg_source;