Cache filedata

This brings down render time of a multipaste with 180 items from ~180ms
to ~80ms.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 18 insertions, 1 deletions

diff --git a/application/helpers/filebin_helper.php b/application/helpers/filebin_helper.php
index b5df4f877..7fd25d5f4 100644
--- a/application/helpers/filebin_helper.php
+++ b/application/helpers/filebin_helper.php
@@ -282,6 +282,23 @@ function stateful_client()
 	return true;
 }
 
+function init_cache()
+{
+	static $done = false;
+	if ($done) {return;}
+
+	$CI =& get_instance();
+	$CI->load->driver('cache', array('adapter' => $CI->config->item("cache_backend")));
+	$done = true;
+}
+
+function delete_cache($key)
+{
+	init_cache();
+	$CI =& get_instance();
+	$CI->cache->delete($key);
+}
+
 /**
  * Cache the result of the function call in the cache backend.
  * @param key cache key to use
@@ -291,8 +308,8 @@ function stateful_client()
  */
 function cache_function($key, $ttl, $function)
 {
+	init_cache();
 	$CI =& get_instance();
-	$CI->load->driver('cache', array('adapter' => $CI->config->item("cache_backend")));
 	if (! $content = $CI->cache->get($key)) {
 		$content = $function();
 		$CI->cache->save($key, $content, $ttl);