Comments on: Creating a cache file in php for API requests

By: inversechi

inversechi — Wed, 03 Mar 2010 06:14:29 +0000

This helped me getting started with writing a simple caching plugin for API's to use within codeigniter – thank you

By: Php Ninza

Php Ninza — Wed, 03 Mar 2010 04:32:28 +0000

@inversechi

Sounds great, It would also help if you can share the link of that plugin. I myself have moved to CI and would love to use that plugin.

By: Php Ninza

Php Ninza — Tue, 22 Dec 2009 11:41:55 +0000

My pleasure @Lucas

By: Lucas

Lucas — Sun, 22 Nov 2009 00:00:01 +0000

Nice tutorial. Thanks!!

By: Php Ninza

Php Ninza — Mon, 24 Aug 2009 16:17:50 +0000

@h4cc

Thanks for clarifying !, Appreciated that !

By: h4cc

h4cc — Mon, 24 Aug 2009 15:23:48 +0000

A few comments to my rewrite.
The old function used 2 files to save the data. 1 file that kept the data, the other file was just there to keep the last changed timestamp.
This way it has several disadvantaged.
- Using 2 files is slower and needs more space.
- Using a timestamp file could be if problem if another program changed the cache file without changing timestamp file.
- The timestamp of the last change action on a file is stored within the filsesystem itself. This value can be accessed very quickly and is also very reliable.

There were also some security holes in this function. Reading and writing files should be controlled strictly. It is possible to read/write a file if you include ‘../’ to go to the upper directory and use a nullbyte at the end to select a other file then specified.

Plus Bug was fixed. If the get_yahoo_data() could not fetch the data and would return not the current XML, this wrong XML would by cached.

By: phpcollection

phpcollection — Mon, 24 Aug 2009 07:56:21 +0000

@h4cc Rewrote the post !, http://bit.ly/r9RbO With your reference and the modified function !, Please let me know if u are nt ok with that!

This comment was originally posted on Twitter

By: phpprofessional

phpprofessional — Mon, 24 Aug 2009 02:41:36 +0000

Create cache file for REST apis in PHP | PHP tutorials and Scripts Collection http://bit.ly/MjfPd

This comment was originally posted on Twitter

By: Php Ninza

Php Ninza — Sun, 23 Aug 2009 04:42:51 +0000

@Mardix

That’s a very valuable peace of advice , Surely it will help a lot of people.

However ,Saving cache in database has some future problems , One of the main problem is that at a point sql queries hurt as these heavy sql queries make server very slow.

Hope it helps

By: Mardix

Mardix — Sun, 23 Aug 2009 01:34:35 +0000

Surprisingly, yesterday I wrote something like that to cache results from: Twitter,Youtube and Flickr api in a database.

– This is what I did –

Before saving the results, I SERIALIZE the data, set an expire time and save it in the db.
To retrieve it, the script then check the expired time, if time has not expired yet, it will just get the serialized data to UNSERIALIZE it and return it as it’s native state. Otherwise it will access the api again, serialize it, set new expired time and save it.

I hope this help someone.