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Varun Shrivastava

How To Become Financially Independent In India?

April 19, 2021 by Varun Shrivastava Leave a Comment

How to become financially independent

I've always talked about the importance of achieving financial freedom. Financial freedom can give your life a purpose. You can live your life fearlessly and do what you love without ever worrying about money. Travel around the world, play your favourite sport or do nothing. You have the freedom to do anything. In this article, I will talk about 5 Ways through which you … [Read more...] about How To Become Financially Independent In India?

Trie Data Structure Implementation | (PUT, GET, DELETE)

April 1, 2021 by Varun Shrivastava Leave a Comment

Trie Data Structure Implementation

What would you do if your professor ask you to come up with a solution for a symbol table that is targeted only for string-based keys which are Faster than Hashing and more Flexible than BSTs? Trie Data Structure is the solution that you will be looking for. Trie is a fast search and miss data structure when it comes to storing key-value pairs where key is a string. This … [Read more...] about Trie Data Structure Implementation | (PUT, GET, DELETE)

5 THINGS I WISH I KNEW When I Started Programming

March 16, 2021 by Varun Shrivastava Leave a Comment

5 Things I wish I knew when I started programming

I've been wanting to write this article for a long time. When I look back at my life and ask the question - What if I knew this already, how my career paths would have been different? And this is a good question to ask yourself. You learn a lot about yourself in ways you didn't know. So, in this article, I would share 5 Things That I Wish I Knew When I Started Programming … [Read more...] about 5 THINGS I WISH I KNEW When I Started Programming

3 Best Laptops (Mid-Range) For Every Use Case In India

February 16, 2021 by Varun Shrivastava 1 Comment

It has been a long time since I reviewed a product. But recently I had to research the best mid-range laptops that are available on the market because one of my friends called me and asked me to pick a laptop for her. I'm always waiting for such opportunities. So in this article, I will be sharing the top 3 best laptops that can be used for almost every normal use case. 1. … [Read more...] about 3 Best Laptops (Mid-Range) For Every Use Case In India

Distributed System Architectural Patterns

February 10, 2021 by Varun Shrivastava Leave a Comment

Distributed-System-Architectural-Patterns

Distributed Systems are complex. There is no doubt about it. But thanks to the experts and the years of experience and experimentation, we now have some of the reference architectures. In this article, I will be discussing four distributed architectural patterns along with their pros and cons. This will be a good reference point for someone who is just starting out or … [Read more...] about Distributed System Architectural Patterns

Basic Calculator Leetcode Problem Using Object-Oriented Programming In Java

February 4, 2021 by Varun Shrivastava Leave a Comment

Basic-Calculator-Leetcode-Problem

This is a medium difficulty problem in Leetcode. This is medium only if you are talking in terms of algorithm and time complexity. But let's say you have to build a calculator for an enterprise. The calculator that will be extensible, maintainable and optimized at the same time. How would you build such a calculator? Well the first thing would still be coming up with the … [Read more...] about Basic Calculator Leetcode Problem Using Object-Oriented Programming In Java

Advent Of Code 2020 – Day 7 – Handy Haversacks

December 18, 2020 by Varun Shrivastava 2 Comments

Advent of Code 2020 - DAY 7

Finally, Directed Weighted Graphs have made their way to the Advent Of Code 2020 on Day 7. If you are unfamiliar with graphs then I highly recommend you to go through the below articles: Undirected Graphs and Graph Processing This above article will give you enough information to get you started with today's problem. On this note, let's start with today's problem. We … [Read more...] about Advent Of Code 2020 – Day 7 – Handy Haversacks

Advent Of Code 2020 – Day 6 – Custom Customs

December 17, 2020 by Varun Shrivastava Leave a Comment

Advent of Code 2020 - DAY 6

This problem was a bit hard to understand at first because the information is not directly given, you have to derive it from the given input. The story goes like this, your aeroplane has reached a regional office where you will switch to a much larger plane, custom declaration forms are distributed to passengers. The form asks a series of yes-or-no questions marked from … [Read more...] about Advent Of Code 2020 – Day 6 – Custom Customs

Advent Of Code 2020 – Day 5 – Binary Boarding

December 16, 2020 by Varun Shrivastava Leave a Comment

Advent Of Code Day 5 - Binary Boarding

You've made it through the passport verification phase. Now, it's time to board the plane. You board the plane but then you realize that you have dropped your boarding pass. So, how are you going to handle this situation. Well, you are a developer, you know only one thing and that is to write code. That is what you are going to do. Somehow, you scanned all the nearby … [Read more...] about Advent Of Code 2020 – Day 5 – Binary Boarding

Advent Of Code 2020 – Day 4 – Passport Processing

December 12, 2020 by Varun Shrivastava Leave a Comment

Advent of Code 2020 - DAY 4 - Passport Processing

I just love the way Eric Wastl links the story. This time it's about passport processing. Do visit the link to read the story and understand the task better. But at a high-level, you need to understand this - there are two types of documents: North Pole CredentialsPassport The passport scanner machine is slow and facing some problem detecting which passport have … [Read more...] about Advent Of Code 2020 – Day 4 – Passport Processing

Advent Of Code 2020 – Day 3 – Toboggan Trajectory

December 12, 2020 by Varun Shrivastava Leave a Comment

Advent of Code 2020 - DAY 3

Great job reaching here so far. Finally, we've logged in to Toboggan successfully, now we have to travel to the airport through a jungle. The path is not very good and has a lot of trees. So, here comes our next task. The trees in this area only grow on exact integer coordinates in a grid. You make a map (your puzzle input) of the open squares (.) and trees (#) you can see. … [Read more...] about Advent Of Code 2020 – Day 3 – Toboggan Trajectory

Advent Of Code 2020 – DAY 2 – Object-Oriented Way

December 9, 2020 by Varun Shrivastava Leave a Comment

Advent of code day 2 - Password Philosophy

The Password Philosophy is the topic of today's discussion. Since there is not much to do with today's problem apart from the string parsing, I thought of doing it in an object-oriented way. The problem statement is mostly based on the string parsing. You will get a list of lines with the password and password check policy. The task is to parse the policy and password from … [Read more...] about Advent Of Code 2020 – DAY 2 – Object-Oriented Way

Advent Of Code 2020 – Day 1 – Report Repair

December 7, 2020 by Varun Shrivastava Leave a Comment

Advent Of Code 2020 - Day 1

In this article, I'll discuss on the Day - 1 problem of "Advent of Code". And from today onwards, I will try to discuss everyday's problem. Make sure you subscribe to the blog to stay in touch. Feel free to share your ideas or even post your solutions in the comment section below. Let's start... PART - 1 of DAY - 1 The problem is simple - Given a list of years, … [Read more...] about Advent Of Code 2020 – Day 1 – Report Repair

Almost Sorted Hacker Rank Problem (Medium Difficulty)

November 27, 2020 by Varun Shrivastava Leave a Comment

Hackrank-Problem-Almost-Sorted-Medium-Difficulty

Recently I came across this problem in hacker rank. This problem is really fascinating as it teaches you to handle a lot of edge cases and variables at the same time. So, I thought of writing an article on this one. I hope you will enjoy it as much as I enjoyed solving it. Simplified Problem Statement You will be given an array of N integers. This array could be … [Read more...] about Almost Sorted Hacker Rank Problem (Medium Difficulty)

How To Start Your Career as a Computer Programmer (For Newbies)

November 5, 2020 by Varun Shrivastava Leave a Comment

Start Your Career as a Computer Programmer Infographics

In this pandemic, I got in touch with many undergraduates and I found a common pattern. They all seem to be confused, usually spread all over the place. On top of that, they are running after the wrong stuff. You see today the internet is filled with information. If you want to learn something, it is just a search away. And this is a good thing. But it can easily … [Read more...] about How To Start Your Career as a Computer Programmer (For Newbies)

Principles of Microservices – Deploy Independently

October 19, 2020 by Varun Shrivastava Leave a Comment

Principles-of-microservices-deploy-independently

This is one of the most important principles in the world of Microservices. This has a direct impact on the ability of an organization to roll-out new changes in less time and with more accuracy. The idea here is to be able to deploy a new version of any part of the functionality in isolation such that the consumers of that service won't even know that something has … [Read more...] about Principles of Microservices – Deploy Independently

Principles of Microservices – Decentralize All The Things

September 6, 2020 by Varun Shrivastava Leave a Comment

Decentralization Of Microservices

Decentralization is a tricky concept. There are many facets to it. In this article, I want to talk about decentralizing everything in a way it doesn't hurt you or your organization. When I think about decentralization the first thing that comes to my mind is Self Service. Self Service Self-service is very important in a truly decentralized system. The people working on … [Read more...] about Principles of Microservices – Decentralize All The Things

Principles of Microservices: Hide Implementation Details

September 2, 2020 by Varun Shrivastava Leave a Comment

Hide Implementation Details

Hiding the implementation of your service is a very important and crucial part of your overall architecture. It means protecting your service, data and implementation from the external world. It is so important that it has become a principle in itself. It is the 3rd principle of Microservice. I recommend you to read about the other two principles if you have not read it … [Read more...] about Principles of Microservices: Hide Implementation Details

Principles Of Microservices: Culture Of Automation

September 2, 2020 by Varun Shrivastava Leave a Comment

Culture Of Automation

This article is written in a succession of the previous article that talks about the first principle of microservices i.e. modelling of microservices around a business domain. Once you have modelled the microservices around your business models and you are confident that you have done a good job, then the next step is to focus on automating your infrastructure. Automation … [Read more...] about Principles Of Microservices: Culture Of Automation

iTerm2 – Colorize The Tailed Logs In ITerm2 Terminal

August 21, 2020 by Varun Shrivastava Leave a Comment

Color Your Teminal

Coloured logs are very helpful especially when you are going to deploy your application in production. The moment when the live traffic is shifted to your servers and you sit there eagerly watching the logs roll off in speed, only one thing in your mind that no warnings and errors should go by unnoticed. This is the best situation where colors play an important role. In this … [Read more...] about iTerm2 – Colorize The Tailed Logs In ITerm2 Terminal

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