Re: alternative service probability parameter

On 9/05/2015 1:37 a.m., Bence Béky wrote:
> Hello httpbis,
> 
> This is a heads up about a parameter that we have been using in
> Alternate-Protocol headers, and are planning to use in Alt-Svc headers
> and ALTSVC frames.  It is "p=" (probability), that Google servers emit
> and Chrome observes.  This takes a numerical value between 0.0 and 1.0
> inclusive, and tells the client to only observe the alternative
> service with that given probability (and ignore it otherwise).  This
> parameter can be used for finer grade load balancing, for gradual
> rollout of a new protocol, and for performance testing.


Why not reusing the standard qvalue / ranking, like other standard
documents do?
  <http://tools.ietf.org/html/rfc7231#section-5.3.1>

Amos

Received on Friday, 8 May 2015 19:50:05 UTC