Caching get_option(), set_option() and update_option()

[egorpromo]

I propose create caching for some wordpress function like get_option(), set_option() and update_option().
May be it's better not to request data from wp_options base of mysql all time. Better way is request all data from wp_options table at once and save it in global variable. So when we use get_option() we don't request data from database but request data from php global variable. And when we save data using set_option() we save data in wp_options table and save it in global variable yet. Later if we will use get_option() in script we will not request to mysql.

Options are already cached (at least with autoload = true) or did I miss something?

The Options API performs caching with the caching API which means that by default it's non-persistent (as you suggest with a global) and can also be persistent when using an external caching solution.

See the wp_cache_get(), wp_cache_set() and wp_load_alloptions() calls in functions.php in 3.3.1:

• update_option()
• get_option()