Software Engineering

Secure boot

Secure boot is a security standard implemented in the advanced UEFI to prevent malware from attacking the computer during boot up when the computer is most vulnerable.

Computer Architecture

UEFI and Legacy boot

Both UEFI and BIOS are firmware that specify an interface between the computer operating system and the underlying firmware. Legacy boot involves booting the computer using legacy firmware such as BIOS and UEFI boot involves booting a computer using the more advanced UEFI.

Computer Architecture

UEFI (Unified Extensible Firmware Interface)

UEFI(Unified Extensible Firmware Interface) is the interface between the operating system and the low-level initialization firmware. It initializes hardware components and is responsible for executing the OS stored in a boot device.

System Design

AWS Redshift in System Design

In this article, We will take a look at AWS Redshift and understand it using a real-time example.

System Design

MemCached in System Design

In this article, we have explored the idea of MemCached in System Design and how it is used in different systems.

System Design

Google Cloud BigQuery in System Design

Google BigQuery is a fully managed enterprise data warehouse that is serverless, highly scalable, and cost-effective for analyzing petabytes of data and billions of rows using ANSI SQL.

Computer Architecture

Types of memory devices

In this article, we have covered the different types of memory devices like CD-ROM, SD card and much more.

Computer Architecture

Firmware

In this article we discuss firmware - software that is directly programmed into hardware devices such as routers, cameras, network cards etc.

Computer Architecture

BIOS (Basic Input Output System)

We discuss BIOS - firmware stored in non-volatile memory e.g EPROM, responsible for startup procedures such as POST before passing control to the bootloader which loads the OS.

Linux

Types of Boot loaders

A boot-loader is responsible for loading the operating system to the Linux kernel and the Linux initial RAM disk. In this article we discuss different boot loaders for the Linux operating system.

Linux

GRUB bootloader

GRUB is one of the many Linux boot loaders responsible for loading an operating system into memory during startup. In this article we discuss the booting process involving GRUB and how to configure and customize GRUB.

Linux

Run levels in Linux

Run levels are modes of operation for computer operating systems. We discuss the different run levels in the Linux OS and demonstrate how to change the default run level.

Linux

Systemd Components

Systemd is a suite of utilities that provide an array of system components for the Linux OS. We look at various components within systemd.

Linux

Unit files in Linux

A unit file is responsible for specifying how systemd starts and runs. In this article, we discuss unit files, the contents of these files, service and target unit and unit files and how to create and edit unit files.

Linux

Systemctl and Systemd in Linux

The systemctl command is a systemd utility used to manage services, get information about service unit files and service states and therefore a useful utility to know for managing services on the server while systemd is an array of components for Linux OS.

System Design

Apache ZooKeeper in System Design

In this article, we will look at Apache ZooKeeper and how it is useful in distributed systems.

System Design

Bigtable in System Design

Bigtable is a revolutionary internal Google database system that helped to launch the NoSQL industry. The company desired to create a database capable of providing real-time access to petabytes of data. Bigtable was born as a result.

System Design

System Design of Snapchat

This article will give an overview of the architecture, infrastructure and System Design of Snapchat, as well as provide some insight to the company (Snap Inc.'s) history.

C++

Initialization of Multiset in C++

In this article, we have explored 6 different ways to initialize Multiset in C++ STL along with C++ code snippets for each approach.

System Design

Eager Loading and Over-Eager Loading

Eager Loading and Over-eager loading are methods of loading resources to web pages.

Software Engineering

Your Career as a Computer Research Scientist

In a world that is rapidly adopting new technologies, it’s no surprise that computer and information scientists are in high demand, with their employment rates projected to grow by 22% from 2020 to 2030.

Linux

Search for a file in Linux (Find command)

In this article, we have explored the approach to Search for a file in Linux (Find command).

System Design

Master-slave & Master-master replication in Databases

In this article, we will explore the basics of data replication techniques such as Master-slave and Master-master in databases.

C++

* vs ** pointer in C

In this article, we have explained the difference between * and ** pointer in C and C++.

System Design

Types of Storage Devices

In this article, we will take a look at the various Storage Devices that are used in computing cost, applications and their characteristics.