This is kind of an addition to earlier “System design notes” medium post and I am creating a new post here , just dedicated to “how and why we choose any database/component for a system design purpose?”. I will try to add all my notes on why choice1 over choice2…

Below are my collection of resources to learn about system design/operating systems related concepts. As I continue on my journey of learning new things, I will keep on adding to this list ! :) Happy Learning !! p.s. I have created a new post dedicated to “Databases related notes w.r.t…

Problem Statement: Given a huge number of hosts in multiple regions, how will you deploy code and handle error detection, high availability etc. ? Before we dive down how can we deploy in multiple regions, lets try to understand how and what strategies need to be taken into consideration when…

Design a search autocomplete system for a search engine. Users may input a sentence (at least one word and end with a special character '#'). You are given a string array sentences and an integer array times both of length n where sentences[i] is a previously typed sentence and times[i]…

Given a grid G of numbers representing heights of persons standing next to each other. A person can see another person in the grid if the height of everyone in between is shorter than them A person can see to the right and down Return a grid A where A[x][y] is…

System calls provide transition from ‘user space’ to ‘kernel space’; These are not just a routine calls. In newer systems, kernel code for system calls do exist inside the address space of the process itself ( top of the address space stack). process cant access them in general, but only…