Cache search results

[doncadavona]

Cache search results.

I am thinking of sorting the characters of query string alphabetically to get a consistent arrangement of the query string.
That way, the search results are consistent regardless of the order of the query string parameters:

example.com/users?created_at=1999-12-31&birth_date=2001-01-31
example.com/users?birth_date=2001-01-31&created_at=1999-12-31

Notice that the above query string are not equal in ordering, but has equal parameters and values.

By sorting them alphabetically, we can confirm their equality:

&----0001111112233999==__aaabcddeeehirrtttt
&----0001111112233999==__aaabcddeeehirrtttt

We can then cache them as the sorted query string as the key and the result as the value.

Optionally, we may need to hash the key to get a consistent and small key length, as query strings lengths are inconsistent and may get very lengthy.