How does Nginx look-up cached resource?

[Sergey Brester]

Leave header format unchanged (I mean changes in header file 
'src/http/ngx_http_cache.h'), but not calculate and not compare crc32 
(unused / reserved up to "change cache header format next time")?

On 10.09.2015 16:47, Maxim Dounin wrote:

> This will break compatibility with old versions for no real
> reason. We may consider this change when we'll change cache
> header format next time.