When shoud I use ssl_session_cache paramter in nginx ssl settings

Question

What do I benefit from ssl_session_cache set in nginx.conf when I using https? See here.

score 15 · Accepted Answer · answered May 29 '15 at 12:30

15

When using SSL-Session-Cache, the performance of keep-alive connections over SSL might be enormously increased.

When the server does have it enabled, it is not necessary for the client to do a full SSL-handshake every request, thus saving time and cpu-resources.

You can read up more here: http://vincent.bernat.im/en/blog/2011-ssl-session-reuse-rfc5077.html

And here is a benchmark: http://www.peterbe.com/plog/ssl_session_cache-ab

Hope this helps.

answered May 29 '15 at 12:30

NeedCoffee

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Why is it set to none by default? – DylanYoung Apr 14 '20 at 21:44
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The question was raised here: https://serverfault.com/questions/998053/why-is-the-ssl-session-cache-ssl-session-cache-disabled-by-default-in-nginx It seems nobody knows. Maybe memory concerns? – NeedCoffee Apr 15 '20 at 05:41
lol, funny. Thanks for the link. – DylanYoung Apr 15 '20 at 15:34
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Without ssl_session_cache shared:SSL:10m; Apple products cannot access the nginx server via SLL – schoetbi Sep 07 '20 at 20:11

When shoud I use ssl_session_cache paramter in nginx ssl settings

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