A warm Hello to all the readers! There is another data structure in computer science. This is the Stack data structure. To understand a stack, it is easy to relate to the stack of plates racked in the kitchen. A plate is put on top of other plates. See the image below. Similarly talking in…
A warm Hello to all the readers! In this post, we will understand about Headless CMS. CMS stands for Content Management System. Going by the name, it manages content and presentation of a website. WordPress is by far the most popular CMS in the market till date. What is a Monolithic CMS? WordPress is a…
A warm Hello to all the readers! I am back with a small tutorial on PostgreSQL. In this I’ll explain how to create roles and users in PostgreSQL database. User is a fundamental component of database. DB users are different from operating system users. Users are assigned permissions what database objects they can access. There…
A warm Hello to all the readers! If you are from computer science background or pursuing computer science jobs, IT jobs, then you must have heard at some point of the word “Algorithm”. Let’s understand in easy and simple terms as to what is an algorithm. In simple terms, we define computer algorithm as “A…
A warm Hello to all the readers! I have been implementing TOTP based authentication in one of my php based application. It is a modern times authentication method to verify that user is real and not a hacker. TOTP stands for “Time Based One Time Password”. You must be aware of OTP. OTPs are singe…
I am back with a simple Linux command. This command will let you sum up the numbers line by line on Linux shell. There are two most commonly used and easiest ways to do so. Create a file named “numbers” containing following random numbers: Sum Numbers using Awk Sum Numbers using jq jq is a…
A warm Hello to all the readers! I am back with yet another article. This article is about how to monitor a Linux host with Prometheus. Prometheus provides an exporter called the Node Exporter. This scrapes various metrics from any linux machine. Let’s begin in installing and configuring the node exporter. Installing and Running Prometheus…
A warm Hello to all the readers! You must be trying out Prometheus in your infrastructure. While doing so, you have encountered some rules in Prometheus. Those are called recording rules and alerting rules. Here in this article, we are going to talk about the recording rules. What are Recording Rules? Recording rules are those…
A warm Hello to all the readers! You must be trying out Prometheus in your infrastructure. While doing so, you have encountered some rules in Prometheus. Those are called recording rules and alerting rules. Here in this article, we are going to talk about the alerting rules. What are Alerting Rules? Alerting rules are those…
A warm Hello to all the readers! I have posted multiple articles about getting started with Prometheus. It talks about installing, configuring and monitoring system through Prometheus. In this section, we will learn how to instrument our golang code to export interesting metrics to Prometheus. Today’s world is about white box monitoring than old school…