The server is under pretty much load - few hundred requests per second. Vast majority of them is through SSL.
The problem is that first request through HTTPS to the server meets very slow response (like 10s) even if database is not involved. Next requests are realized in eye blink. At the same time without SSL it works fast constantly. Few days ago situation was inversed - most of the traffic was without SSL ant then it was fast without SSL and with SSL slow.
I want connections to go through SSL but the first reponse after some time of lack of activity at level of about 10 seconds is unacceptable. What could I change in probably apache2 config to avoid the first slow response?