Caching is sometimes served as a “holy grail” for all performance problems. It is not surprising that users often puzzle the statement “enough to use caching” in my presentations, seminars and workshops. Some in the WordPress community have come to refer to me as “the guy who hates caching.” It’s time to clarify what I really think about this issue. When and in what situations is caching really worthwhile? How to abandon it? What alternative solutions exist? When should I use page caching? Let’s start with the largest – page caching. Here’s how it works in practice: Visitor A goes to abc.com/page. This page is not in the… [Read More]
Install and Configure Apache on Ubuntu Server
Apache is the first choice for many as open source web server due to its functionality and ability to deal with huge traffic. Install Apache Let’s connect to our Ubuntu server and give a simple command to install Apache2 :
1 | sudo apt-get install apache2 apache2-doc |
Only the first package is necessary for the operation but it can be convenient to install the second one, apache2-doc, to have inside the server all the official documentation always available. The same documentation is also available on the Apache2 website. The installation is already finished and we can immediately go to test its success by connecting from another… [Read More]
Compress the Apache Server Output with GZIP
To enable Apache Server output compression with GZIP we add this code to our .htaccess file:
1 2 3 4 5 6 7 8 9 10 | <ifModule mod_gzip.c> mod_gzip_on Yes mod_gzip_dechunk Yes mod_gzip_item_include file .(html?|txt|css|js|php|pl)$ mod_gzip_item_include handler ^cgi-script$ mod_gzip_item_include mime ^text/.* mod_gzip_item_include mime ^application/x-javascript.* mod_gzip_item_exclude mime ^image/.* mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.* </ifModule> |
How to Shutdown Linux System from a Terminal
Through the SSH terminal, it is possible to shutdown your linux server by using the specific command. Eg:
1 | sudo shutdown -h now |
will immediately shut down the system. If you want to shut down the computer within a set time you will use:
1 | sudo shutdown -h +30 |
(to turn off the computer in thirty minutes) or
1 | sudo shutdown -h 3103180830 |
(to turn off the computer on 31-03-2018 at 08:30) Alternatively, it is also possible to use:
1 | sudo halt |
or
1 | sudo poweroff |
How to Make Encrypted and Secret Chats with Skype
After WhatsApp, Facebook Messenger and Google Allo, Skype also jumped in the field of encrypted and safe chat. The software for VoIP calls and video calls owned by Microsoft is the latest instant messaging platform to integrate within their source code the protocol encryption end to end Signal. Made by the homonymous software house – and used by the homonymous instant messaging app – Signal is recognized by many as the best cryptographic protocol for the chat. With this addition, Skype joins the large group chat that allows their users to send private messages and safe (like Google incognito Allo, the secret conversations of Messenger and all conversations on WhatsApp and Signal). At the… [Read More]
Ten Tricks to Use Windows 10 as a Pro
Microsoft Windows 10 has some hidden features that will make you a pro user and in this article, we will unveil these tips and tricks. Customize Windows 10 With the release of Windows 10 by Microsoft, the company has won the praise of both specialized critics and users. After the complicated years of Windows 8, Microsoft is back on its feet listening to user requests and has made major changes to the operating system. First he “retired” the annoying tiles, the “bricks” theme of Windows 8. Thanks to the new user interface of Windows 10, the operating system is much easier to use and at the same time… [Read More]