The current option style is very clumsy:

Cachex.start(:my_cache, [ fallback_args: [ db, conn ], default_fallback: fn(key, db, conn) ->
  do_something(db, key)
end)

It's extremely long-winded and doesn't really jive with other options. In addition, the use of arbitrarily long arguments is slow and far from optimal.

This should be reworked to make more sense, provide a nicer interface, and remove arbitrarily long argument lists to aid performance.