[eluser]flash_back[/eluser]
I have develop small social network TuningTube about Tuning and Styling!
SQL server is slow and main problem is on forum index page, avenge time to load is above 6-7 seconds, sometimes over 10!
so caching will solve most problem, but there is a cache! take look a forum, when I am sing in and cache forum index page every visitor will se just my stuff, like avatar, PP inbox, most used room, even a hidden room for portal administracion!
so if anyone try to cache just some specific page elements, not entire page? I will take example for unread topic/room icon on forum! If user create let say new thread, can CI cache this file, and when somebody enter at forum index/room to open to just a thread from cache, not thread icon too?
is any way to to this?
[eluser]flash_back[/eluser]
anybody???
[eluser]cahva[/eluser]
Hi,
I used Phil Sturgeons Codeigniter-cache as I had the same problem(eCommerce site which had user specific parts). Check it out. Its easy to use and you can cache parts you want.
[eluser]flash_back[/eluser]
tnx a lot man, this is helpful  ziveo godina 100  be live for 100 years, that how we say 
[eluser]flash_back[/eluser]
i have contact Phil to help me to run this from model directly and to make it more simple, to cache just simple element whit a value
maybe I miss something in idea, and best way to "tune" this cache is to contact directly cache master
[eluser]flash_back[/eluser]
there is no answer from Phil so I am going to develop cache that will cache just some segments and keep them (that will be tricky) until the DB entry/data is changed..
I will see, maybe is better to generate cache from let say forum comment when comment is created then when first time there is a need for this kind of data.
I just release TT [url="http://translate.google.com/translate?hl=en&sl=sr&tl=en&u=http://www.tuningtube.rs/forum/pregled/Obavestenja/Beta-v1-0.html"]beta v1.0[/url] version, next step will be blogs and then cache..
so if anybody need this, contact me for about 15 - 30 days from now
rd.flash.back[at]gmail.com // flash_back[at]tuningtube.rs // all best, regards
[eluser]flash_back[/eluser]
here it is, is done for 25-30 minutes, I have not set trigger for change a cache file when let say a new comment on forum is add, but this is basic change Phil cache library is done and now you can cache specific element, not whole page
Code: public function funkcija($model, $funkcija, $ID, $vrednost, $expires = NULL)
{
return $this->_call($model, $funkcija, $ID, $vrednost, $expires);
}
private function _call($model, $funkcija, $ID, $vrednost = array(), $expires = NULL)
{
$this->ci->load->helper('security');
if(!is_array($vrednost))
{
$vrednost = (array) $vrednost;
}
// Clean given arguments to a 0-index array
$vrednost = array_values($vrednost);
$cache_file = $model.DIRECTORY_SEPARATOR.dohash($funkcija.serialize($ID), 'sha1');
// See if we have this cached
$cached_response = $this->get($cache_file);
// Not FALSE? Return it
if($cached_response)
{
return $cached_response;
}
else
{
// Call the model or library with the method provided and the same arguments
$new_response = $vrednost;
$this->write($vrednost, $cache_file, $expires);
return $new_response[0];
}
}
function get($filename = NULL, $use_expires = true)
{
// Check if cache was requested with the function or uses this object
if ($filename !== NULL)
{
$this->_reset();
$this->filename = $filename;
}
// Check directory permissions
if ( ! is_dir($this->path) OR ! is_really_writable($this->path))
{
return FALSE;
}
// Build the file path.
$filepath = $this->path.$this->filename.'.cache';
// Check if the cache exists, if not return FALSE
if ( ! @file_exists($filepath))
{
return FALSE;
}
// Check if the cache can be opened, if not return FALSE
if ( ! $fp = @fopen($filepath, FOPEN_READ))
{
return FALSE;
}
// Lock the cache
flock($fp, LOCK_SH);
// If the file contains data return it, otherwise return NULL
if (filesize($filepath) > 0)
{
$this->contents = unserialize(fread($fp, filesize($filepath)));
}
else
{
$this->contents = NULL;
}
// Unlock the cache and close the file
flock($fp, LOCK_UN);
fclose($fp);
// Check cache expiration, delete and return FALSE when expired
if ($use_expires && ! empty($this->contents['__cache_expires']) && $this->contents['__cache_expires'] < time())
{
$this->delete($filename);
return FALSE;
}
// Check Cache dependencies
if(isset($this->contents['__cache_dependencies']))
{
foreach ($this->contents['__cache_dependencies'] as $dep)
{
$cache_created = filemtime($this->path.$this->filename.'.cache');
// If dependency doesn't exist or is newer than this cache, delete and return FALSE
if (! file_exists($this->path.$dep.'.cache') or filemtime($this->path.$dep.'.cache') > $cache_created)
{
$this->delete($filename);
return FALSE;
}
}
}
// Instantiate the object variables
$this->expires = @$this->contents['__cache_expires'];
$this->dependencies = @$this->contents['__cache_dependencies'];
$this->created = @$this->contents['__cache_created'];
// Cleanup the meta variables from the contents
$this->contents = @$this->contents['__cache_contents'];
// Return the cache
log_message('debug', "Cache retrieved: ".$filename);
return $this->contents[0];
}
$model // just used for folder where to set cache files
$funkcija // name of function that we are caching
$ID // ID of function or some value that is constant for caching value
$vrednost // value that we are caching
that is it, its just beta v0.1 version of cache which is done in 25-30 minutes but doing the job
[eluser]flash_back[/eluser]
now, this code caching single file from model, that was the point! now if you want to cache a array of files its easy, just add this changes to code
I just add a $this->masivni_cache check to see is is massive cache, array of files! code now look like this
Code: public function funkcija($model, $funkcija, $ID, $vrednost, $expires = NULL)
{
if(is_array($vrednost) AND count($vrednost) > 1):
$this->masivni_cache = TRUE;
endif;
return $this->_call($model, $funkcija, $ID, $vrednost, $expires);
}
// Depreciated, use model() or library()
private function _call($model, $funkcija, $ID, $vrednost = array(), $expires = NULL)
{
$this->ci->load->helper('security');
if(!is_array($vrednost))
{
$vrednost = (array) $vrednost;
}
// Clean given arguments to a 0-index array
$vrednost = array_values($vrednost);
$cache_file = $model.DIRECTORY_SEPARATOR.dohash($funkcija.serialize($ID), 'sha1');
// See if we have this cached
$cached_response = $this->get($cache_file);
// Not FALSE? Return it
if($cached_response)
{
return $cached_response;
}
else
{
// Call the model or library with the method provided and the same arguments
$new_response = $vrednost;
$this->write($vrednost, $cache_file, $expires);
// ako se ne vraca array vec pojedinacan element -> return $new_response[0];
if (isset($this->masivni_cache) AND $this->masivni_cache == TRUE):
$this->masivni_cache = FALSE;
return $new_response;
else:
return $new_response[0];
endif;
}
}
function get($filename = NULL, $use_expires = true)
{
// Check if cache was requested with the function or uses this object
if ($filename !== NULL)
{
$this->_reset();
$this->filename = $filename;
}
// Check directory permissions
if ( ! is_dir($this->path) OR ! is_really_writable($this->path))
{
return FALSE;
}
// Build the file path.
$filepath = $this->path.$this->filename.'.cache';
// Check if the cache exists, if not return FALSE
if ( ! @file_exists($filepath))
{
return FALSE;
}
// Check if the cache can be opened, if not return FALSE
if ( ! $fp = @fopen($filepath, FOPEN_READ))
{
return FALSE;
}
// Lock the cache
flock($fp, LOCK_SH);
// If the file contains data return it, otherwise return NULL
if (filesize($filepath) > 0)
{
$this->contents = unserialize(fread($fp, filesize($filepath)));
}
else
{
$this->contents = NULL;
}
// Unlock the cache and close the file
flock($fp, LOCK_UN);
fclose($fp);
// Check cache expiration, delete and return FALSE when expired
if ($use_expires && ! empty($this->contents['__cache_expires']) && $this->contents['__cache_expires'] < time())
{
$this->delete($filename);
return FALSE;
}
// Check Cache dependencies
if(isset($this->contents['__cache_dependencies']))
{
foreach ($this->contents['__cache_dependencies'] as $dep)
{
$cache_created = filemtime($this->path.$this->filename.'.cache');
// If dependency doesn't exist or is newer than this cache, delete and return FALSE
if (! file_exists($this->path.$dep.'.cache') or filemtime($this->path.$dep.'.cache') > $cache_created)
{
$this->delete($filename);
return FALSE;
}
}
}
// Instantiate the object variables
$this->expires = @$this->contents['__cache_expires'];
$this->dependencies = @$this->contents['__cache_dependencies'];
$this->created = @$this->contents['__cache_created'];
// Cleanup the meta variables from the contents
$this->contents = @$this->contents['__cache_contents'];
// Return the cache
log_message('debug', "Cache retrieved: ".$filename);
// ako se ne vraca array vec pojedinacan element -> return $this->contents[0];
if (isset($this->masivni_cache) AND $this->masivni_cache == TRUE):
$this->masivni_cache = FALSE;
return $this->contents;
else:
return $this->contents[0];
endif;
}
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