Google has announced that HTTPS will be used as a criterion of a high quality site. In short, having encryption will help your SEO according to their article, “HTTPS as a ranking signal.”
This is great news for many of our clients who have wanted to go HTTPS only, but were nervous about the impact in search engines.
We have some tips for those working to convert:
Tip #1: Move to HTTPS before the pack
If all sites went to HTTPS, it seems to us that there will not be enough ipv4 addresses. Going ipv6 may slow things down or even require changes at your provider.
Tip #2: Consider Multi-Domain SSL Certificates
For sites that have multiple DNS hostnames and/or domain names, but are hosted on the same server and are functionally the same, multi-domain certificates are an often overlooked solution. These are not offered at many SSL providers and while you generally cannot add or remove domains once the certificate is created, the certificates make combining different domains easier than ever.
Tip #3: Use Keep-Alive Connections
One of the trade-offs of encryptions is that each time the browser connects to the server it must establish a secured TCP session, which takes far more round-trips than an unsecured session. By using Keep-Alives, these expensive sessions can be re-used for more than one item to be transferred. We all know, thanks to Jack Johnson, that reducing beats recycling, and it is true of TCP connections as well as garbage!
Tip #4: Use an HTTPS accelerator and/or proxy layer
Encryption adds overhead with CPU and also makes session startup take more requests, keeping web server threads open longer. Having a dedicated layer for handling transport data or for very busy sites, an ASIC to handle SSL encryption, can increase throughput and reduce latency.