codeigniter cache returns always empty

Question

I'm try to use the Codeigniter cache system, to cache some remote xml files into "file cache".

Every think looks great when I request the xmls, but codeigniter not cache the files, instead it return a empty cache, and the cache file contains just the data below:

a:3:{s:4:"time";i:1379515910;s:3:"ttl";i:120;s:4:"data";b:1;}

I'm using the code below to cache the xml:

$this->load->driver('cache');
$this->cache->file->save('first', $data, 120);

[UPDATED]

Now I can save the cache, but I can't rescue the saved data. When I run the command below the cache return false

$this->cache->get('show');

Where am I going wrong?

Thanks.

What does $this->cache->file->save('first', $data, 120); return? If the save fails it will return false. Have you tried saving something simple to the cache like a string to check if it's working? — Jeemusu
– Jeemusu, Commented Sep 20, 2013 at 14:20
have you checked logs and permissions? Could be a permission issue. — Jakub
– Jakub, Commented Sep 20, 2013 at 15:16
I did, the log not show errors and the cache directory permissions is 777. I can save the cache, but I can't get it back. — GodFather
– GodFather, Commented Sep 20, 2013 at 15:21
Have you tried $this->cache->get('first'); to get the data back? — Jeemusu
– Jeemusu, Commented Sep 20, 2013 at 15:38

GodFather · Accepted Answer · 2013-09-23 19:13:52Z

4

Problem solved, when I call the method to get the current cache I need to pass the used driver e.g.:

$this->cache->file->get('home');
OR
$this->cache->memcached->get('home');

Thanks.

answered Sep 23, 2013 at 19:13

GodFather

3,2064 gold badges28 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Praditha Over a year ago

where is the 'home' comes from? Could you explain the detail? I got the same issue, always return false when get the cached file.

S. Imp Over a year ago

This makes no sense. Your code above saves the item as first, your original post tries to fetch a cache item named show, and your solution fetches an item named home. This answer is not good.

The Alpha · Accepted Answer · 2020-01-22 18:21:03Z

4

You've saved it using

$this->cache->file->save('first', $data, 120);

Then get it using the right key and it should be first

$this->cache->get('first');

Also, to get information about cache you can use

var_dump($this->cache->cache_info());

Or you may use

var_dump($this->cache->get_metadata('first'));

This is useful for debugging. The get method accepts cache_item_id as parameter that you have used when you saved it

get(id['string'])

Check the documentation.

edited Jan 22, 2020 at 18:21

answered Sep 21, 2013 at 1:56

The Alpha

147k30 gold badges294 silver badges313 bronze badges

1 Comment

mickmackusa Over a year ago

The documentation link is broken.

pgrono · Accepted Answer · 2018-12-16 13:22:09Z

2

Just create folder "cache" in "application" directory. It works for me

answered Dec 16, 2018 at 13:22

pgrono

8168 silver badges6 bronze badges

1 Comment

Dulitha K Over a year ago

The best thing is to check whether the cache folder exists as you mentioned.

Levan Abashidze · Accepted Answer · 2016-11-27 20:21:44Z

0

I had same problem but in my case it was storage problems.

my hdd was 100% full (because of some error logs).

Maybe this information will help someone.

answered Nov 27, 2016 at 20:21

Levan Abashidze

1106 bronze badges

Comments

Firze · Accepted Answer · 2017-12-13 11:36:44Z

0

I stumbled here with similar issue. My problem was that APC cache wasn't installed. So if anyone else is using APC and having this issue. Try installing APC.

Example PHP 7.1 on ubuntu 1604:

sudo apt-get update
sudo apt-get install php7.1-apcu
sudo service php7.1-fpm restart

answered Dec 13, 2017 at 11:36

Firze

4,0956 gold badges52 silver badges63 bronze badges

Comments

Luca Angioloni · Accepted Answer · 2020-12-03 04:28:45Z

0

I get same problem too ...

$this->load->driver('cache', array('adapter' => 'apc', 'backup' => 'file'));
$this->cache->file->save('first', $data, 120);

I modified these two lines..

edited Dec 3, 2020 at 4:28

Luca Angioloni

2,2532 gold badges21 silver badges28 bronze badges

answered Dec 2, 2020 at 12:09

santhoshi

11 bronze badge

Collectives™ on Stack Overflow

codeigniter cache returns always empty

6 Answers 6

2 Comments

1 Comment

1 Comment

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

2 Comments

1 Comment

1 Comment

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related