Long polling is a concept that was being used aggressively in the past. It was the technique that made web feel like real-time. I think a little history would help you to understand better. The Brief History Of Internet If you are old enough then you would know that web in its early days was very boring. And by boring I mean static, no moving parts. It simply … [Read more...] about Long Polling Implementation With Java and Spring Boot
A Beginners Guide to Understand Collections in JAVA
I learned about Collections framework in Java in the first week itself. In fact this was the second topic that I picked up after learning the basics of the language. Recently I was trying to teach Java to a beginner and I saw that the Collections framework is a bit hard to grasp for some people. And the reason that I think is the lack of knowledge about Java's basic features … [Read more...] about A Beginners Guide to Understand Collections in JAVA
Getting Started With Spring Framework in less than 30 minutes
When you first hear the word "Spring" your mind prints a beautiful picture like this, But for Java developers, Spring is different but the feeling is similar :) Spring makes it easy to develop web applications. It comes equipped with all sorts of different components that takes care of the important repetitive tasks for us. A simple example would be the Bean … [Read more...] about Getting Started With Spring Framework in less than 30 minutes
3 Best Laptops (Mid-Range) For Every Use Case In India
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
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
The Power of being in the Present
Last night I saw a beautiful, creative and adventurous dream. I did what I like, shifted from one place to another on my will and manipulated the objects inside my dream. It was really fun for the most part. I think it's not just me, this phenomena happens with other people as well. This is also not the first time I experienced such awareness while sleeping. Ever since … [Read more...] about The Power of being in the Present
Basic Calculator Leetcode Problem Using Object-Oriented Programming In Java
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
Study Abroad Destinations : Research and Review
It has been a year now since I started my journey as an abroad education aspirant. One year ago, I decided to persue my masters from an international and renowned university. Although, my plans took a setback due to the pendamic but s a silver lining I got plenty of time to research about various other countries and so I am eligible to write this article. If you are planning … [Read more...] about Study Abroad Destinations : Research and Review
Advent Of Code 2020 – Day 7 – Handy Haversacks
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
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
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
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
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 1 – Report Repair
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
Advent Of Code 2020 – DAY 2 – Object-Oriented Way
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
Almost Sorted Hacker Rank Problem (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)
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
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
Undirected Graphs [Examples, Implementation & Graph Processor]
This article is going to be all about Undirected Graphs. It is in the succession of the previous article Getting Started With The Algorithms that sets you up to learn algorithms. I suggest you read that article to learn about the origin of algorithms, why they are important and needs to be studied. In this article, I'll be talking about one of the most interesting topics in … [Read more...] about Undirected Graphs [Examples, Implementation & Graph Processor]
Principles of Microservices – Decentralize All The Things
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