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

HTTPS has encryption/decryption overhead so it will always be slightly slower. SSL termination is very CPU intensive. If you have devices to offload SSL, the difference in latencies might be barely noticeable depending on the load your servers are under.