I have a web site, which was powered by Nginx 1.7. The SPDY 3.1 was enabled. Later last week, I upgraded it to Nginx 1.9.7 mainline version. HTTP/2 already built with Nginx from version 1.9.5. Why not enable HTTP/2? I just did a very rough test. 1. Pingdom testing tool SPDY 3.1: Performance Grade
Here is a notes for Email Server Settings. It is not just for Email server. It is mainly for DNS setting for Email server. The purpose of it is to prevent from your outgoing email into spam box. I have a web page, which use PHPMailer to send email. The problem of it is most
I have tried some tools to diagnose my SSL certificate installation. Some related to correct certificate, and more on certificate chain issues. SSL Certificates are trusted from its parent, or issued by its high lever certificate. It looks like a chain, one connect to other one and gos to the CA root. Say, I have
I am customer of CloudatCost, which is a VPS service provider at Ontario, Canada. I saw the Ads on twitter, or just someone make a tweet. The most interesting thing is the one time payment and no more recurring invoice. Only one time setup fee. It also has monthly plan. For example, the very basic
802.11ac is main stream as well as 802.11n. Because 802.11n has better distance and more power to pass-through wall. But 802.11ac is much fast than 802.11n. 802.11ac Technology Overview: 11n Specification: 2.4 and 5Ghz Supported Wider channels 40MHz Better modulation 64QAM Additional streams up to 4 streams Beam forming Backwards compatibility, with 11a/b/g 11ac introduces:
Got an email from Google last week. Your account settings in one place at My Account Yes, it is a new setting page which can do lots for your Google Account. There are some important part of settings. Privacy Checkup. Add a phone number, bind it with your Google Account.
I found some errors in Google Search Console — Crawl Error. More than 400 errors of Not-Found. After checking the details of these errors, I am noticed that they are the dead links which were brought after I converted this blog from MovableType to WordPress. Some links are changed and I forgot to implement the
Server Name Indication is an extension to the TLS computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. The most import reason to have this extension is to allow a server to present multiple SSL web site, or multiple certificates on
The same script php file, always works smoothly on HHVM 3.2 to HHVM 3.5. Until I upgrade it to HHVM 3.6. It is a simply script which use mysqli connection and so on. Now it is shown the error as below: I tried to find the answer and faild. So I upgrde the HHVM to
Received an email from Linode about the security updates. It happened on yesterday. The Email said: Linode recently received several Xen Security Advisories (XSAs) that require us to perform updates to our host servers. In order to apply the updates, hosts and the Linodes running on them must be rebooted. The XSAs will be publicly
