request_time much slower than upstream_response_time

Rt Ibmer rtibmx at
Mon Jun 23 20:30:03 MSD 2008

> You should use keepalive. 

I use this currently:
 keepalive_timeout   30;

The reason I have it at 30 is because typically only 1-3 requests will be made from a web site to hit us for static content. So if user A goes to and has references to our web service, user A will hit nginx 1-3 times on the first page visit to (which we then send the content with expires 1 day) and then not again at all unless on a subsequent day.

So my thought is that all 1-3 requests from user A will come to nginx within 30 seconds, and will not come back in subsequent page hits so I was thinking no need to keep that ssl connection open for more than 30 seconds.

However, perhaps I am misunderstanding this.  Does having a higher keep alive help users B, C, and D and so forth also on their first 1-3 requests? Or the keep alived connection only good for each user?

At any rate what would you recommend I set this at based on my usage scenario above?

> You may also try to use 56-bit and 128-bit ciphers first:
> ssl_ciphers     

Currently I use this:

   ssl_ciphers      DES-CBC-SHA:RC4-MD5:RC4-SHA:AES128-SHA:DES-CBC3-SHA;

So should I replace that line with what you put above or just preappend those settings to my existing line?

Thank you so much!!


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