initialize the cache
the configuration of the cache
clear the entire cache The cache will abort output a warning: If error happened with browser storage
set cache with customized configuration
customized configuration
Return a new instance of cache with customized configuration.
the customized configuration
produce a JSON object with meta-data and data value
the value of the item
optional, the specified meta-data
Return all the keys in the cache.
return the current size of the cache
Get item from cache. It will return null if item doesn’t exist or it has been expired. If you specified callback function in the options, then the function will be executed if no such item in the cache and finally put the return value into cache. Please make sure the callback function will return the value you want to put into the cache. The cache will abort output a warning: If the key is invalid If error happened with browser storage
the key of the item
remove item from the cache The cache will abort output a warning: If error happened with browser storage
the key of the item
Set item into cache. You can put number, string, boolean or object. The cache will first check whether has the same key. If it has, it will delete the old item and then put the new item in The cache will pop out items if it is full You can specify the cache item options. The cache will abort and output a warning: If the key is invalid If the size of the item exceeds itemMaxSize. If the value is undefined If incorrect cache item configuration If error happened with browser storage
the key of the item
the value of the item
Customized storage based on the SessionStorage or LocalStorage with LRU implemented