HTTP vs HTTPS performance

Question

Are there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current g

Answer 1

Is TLS fast yet? Yes.

• Watch: https://www.youtube.com/watch?v=0EB7zh_7UE4
• Read: https://istlsfastyet.com/

There are many projects out there that aim to blur the lines and to make HTTPS just as fast. Like SPDY and mod-spdy.