Enabling SSL session for Jetty to speed up HTTPS requests

Question

This is a follow up of my question here, where I found a big query time differences with HTTPS vs. HTTP requests: the larger the distance to the server was the bigger was this d

Answer 1

I'm not quite sure what you're actually asking for. Well HTTPS will always be slower than HTTP as it has more overhead.

However there's things you can probably do to reduce the response times. For example most Operating Systems are using a too small tcp initial congestion size. This leads to an additional roundtrip just for the TCP handshake. As the roundtriptime is usually somewhere between 20ms and up to several seconds (slow network to a server overseas) this can severly improve the time taken to establish a ssl connection.

Have a look at https://lwn.net/Articles/427104/ for linux systems. Kernels >2.6.39 or >3.x should do.