25 Best CDN Providers 2021

A content delivery network also referred to as a content distribution network (CDN), is a geographically distributed network of data centers containing proxy servers. CDN providers serve internet content, including web objects (text, graphics, and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, to name closer to and thus faster, to end-users. Some of […]

Observability, Getting Started – 50 Free Access and Open-Source Solutions

This article discusses APM and observability while highlighting free observability solutions and tools. I’ve also included several quotes collected from observability companies who offer free-level access to their platforms and composed a list of 40 noteworthy paid and open-source observability solutions. Lastly, I hope to urge observability providers to extend free and open access to […]

df command in Linux with examples

This article is a follow up to the previous 90 Linux Commands frequently used by Linux Sysadmins post. Every week, as time allows, I will publish articles on the ~ 90 commands geared toward Linux sysadmins and Linux power users. Use the df command when you need to know how much space is available on […]

Linux top: Here’s how to customize it

The top command – referred to below as Linux top – is a command on Unix and Unix-like systems such as Linux, which provides a dynamic real-time overview of a running system. It can display system summary information and a list of processes or threads currently being managed by the Linux kernel. The types of […]

ls command in Linux, with examples

This is a follow up of my previous 90 Linux Commands frequently used by Linux Sysadmins article. Every week, as time allows, I will publish articles on the ~ 90 commands geared toward Linux sysadmins and Linux power users. Let’s begin with the ls command. Ls (short for list) is used on Linux and other […]

Is Cloudflare Argo worth it?

Cloudflare Argo reduces network latency on average by 35% and connection errors by 27%. Traditional network technologies use static routing information, which can be slower and often use congested paths. Slow loading times and connection timeouts increase the likelihood of poor user experience. The Cloudflare company routes 10% of all HTTP/HTTPS Internet traffic. This provides […]

90 Linux Commands frequently used by Linux Sysadmins

There are well over 100 Unix commands shared by the Linux kernel and other Unix-like operating systems. If you are interested in the commands frequently used by Linux sysadmins and power users, you’ve come to the place. Recently, I published a five-part series covering commands often used by Linux sysadmins. Below I’ve listed the 90 […]

Linux Commands frequently used by Linux Sysadmins – Part 5

This is the final part of the five-part series entitled: Linux Commands frequently used by Linux Sysadmins. So far, we’ve covered over 50  commands regularly used by Linux sysadmins and power users. Refer to part 1, part 2, part 3, and part 4. This article will look into another set of commands and command-line tools […]

PHP memory_limit – understanding and increasing this setting

PHP memory_limit is per-script, just as a highway’s speed limit is per-vehicle. For example, although PHP’s memory limit may be set high to 1GB, that does not mean that scripts will pile up to use that 1GB. Let’s take a quick look at understanding PHP’s memory_limit setting.   PHP memory_limit is a per-script setting PHP.net’s […]