Scalability

[splitice]

On review I noticed this module is prone to poor scalability.

Scales roughly O(n*m) where n is the number of languages supplied in the header and m is the number of languages supported.

If m is sufficiently large this module will cease to perform well.

[giom]

Hi, you're probably right, I only ever used it with m = 3 languages. I do not currently use this module since we switched to using a CDN in front of nginx for the use case I had and we now do the normalization in the CDN. However, I will spend time to clean up and look at any PR this week.

[splitice]

@giom I think replacing the array with a ngx_hash_t would work.

[splitice]

Closing in favor of #7