What is default expiry, If we don't specify expiry while writing data to cache?

[rahulradixweb]

Hi,

We have implemented file driver for caching data, something like below.

Phpfastcache\CacheManager::setDefaultConfig(new Phpfastcache\Config\ConfigurationOption([
    "path" => "/tmp/",
]));
$InstanceCache = Phpfastcache\CacheManager::getInstance('files');
$cachedItem = $InstanceCache->getItem('sample_cache_key');
$cachedData['cache_key'] = "cache_value";
$cachedItem->set($cachedData)->addTag('sample_tag'); // We don't specify expiry here
$InstanceCache->save($cachedItem);

My question is , up-to when this data will be available in cached storage?

[Geolim4]

My question is , up-to when this data will be available in cached storage?

Immediately.
Default TTL is 900 second if left untouched.

[rahulradixweb]

Thanks for your response.

Means, If I get cache item (using getItem()) within 900 seconds, will it be extended (expiry time)?
And I don't get it within 900 seconds, it will be expired, is it so?
Any provision to override default TTL? without specifying to each write? (It seems , it can be done by setting global option defaultTtl when creating config, right?)

[rahulradixweb]

Do we have option to cache forever? untill we clear it explicitly?

[Geolim4]

Means, If I get cache item (using getItem()) within 900 seconds, will it be extended (expiry time)? And I don't get it within 900 seconds, it will be expired, is it so? Any provision to override default TTL? without specifying to each write? (It seems , it can be done by setting global option defaultTtl when creating config, right?)

It's 900 seconds that start at the time you requested the item via getItem().
See global options in Wiki:
https://github.com/PHPSocialNetwork/phpfastcache/wiki/%5BV4%CB%96%5D-Configuration-Options#global-options

Do we have option to cache forever? untill we clear it explicitly?

By definition a cache is not meant to be permanent, if you need permanent data use a database instead.