[DISCUSS]Request optimization suggestions about ngx.decode_args

[hui li]

Hi, all.
The ngx.decode_args interface is time consuming. Is there a better
optimization method?
I have two ideas, the first, adding some judge before calling the
ngx.decode_args. Second, adjust the parameters. However, I looked through
the official documentation and best practices, and did not find this
function optimization technique.
Flame diagram see attachment.