Flush the Lua scripts cache.
By default, SCRIPT FLUSH will synchronously flush the cache.
Setting the lazyfree-lazy-user-flush configuration directive to "yes" changes the default flush mode to asynchronous.
It is possible to use one of the following modifiers to dictate the flushing mode explicitly:
ASYNC: flushes the cache asynchronouslySYNC: flushes the cache synchronously
For more information about EVAL scripts please refer to Introduction to Eval Scripts.