Learn JavaScript™

Build real time applications with React JS, Express, Harper Db and Socket IO

https://www.freecodecamp.org/news/build-a-realtime-chat-app-with-react-express-socketio-and-harperdb

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Get to know Surreal Db databases by creating Express JS and Node JS backend applications

https://betterprogramming.pub/surrealdb-explained-with-express-js-node-js-and-typescript-98db891389c4

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A simple explanation of what a CRUD database is

https://www.freecodecamp.org/news/crud-operations-explained/

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#crud #surrealdb #nodejs #harperdb

freeCodeCamp.org

How to Build a Real-time Chat App with React, Node, Socket.io, and HarperDB

In this article, we will be using Socket.io and HarperDB to build a fullstack, real-time chat application with chat rooms. This will be a great project to learn how to put together fullstack apps, and how to create an app where the backend can commu...

357 views14:40

Learn JavaScript™

Some conditions where it is necessary to use multiple env in Node JS

https://blog.bitsrc.io/why-you-should-use-multiple-environments-node-js-ca3123f4566b

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Creating a Job Queue queuing system on the jS . Node

https://medium.com/nerd-for-tech/implementing-a-job-queue-in-nodejs-2bcfebf52d2b

#nodejs #queue #env

Medium

Why, When, and How to Use Multiple Environments for Node.js

I ran into a post by Suhail recently about engineers at Twitter building in production environments. It captured a lot of attention and…

397 views14:48

Learn JavaScript™

Forwarded from Programming World👨‍💻

𝗔𝗺𝗮𝘇𝗼𝗻'𝘀 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗚𝘂𝗶𝗱𝗲 (𝟮𝟬𝟮𝟮)

𝗔𝘃𝗲𝗿𝗮𝗴𝗲 𝘀𝗮𝗹𝗮𝗿𝘆 𝗶𝗻 𝘁𝗵𝗲 𝗨𝗦
SDE I (L4): 170K
SDE II (L5): 240K
SDE III (L6): 345K

𝗛𝗲𝗿𝗲 𝗶𝘀 𝘄𝗵𝗮𝘁 𝘁𝗼 𝗲𝘅𝗽𝗲𝗰𝘁 𝗶𝗻 𝗮𝗻 𝗔𝗺𝗮𝘇𝗼𝗻 𝗶𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗳𝗼𝗿 𝗮 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿:

➡ 𝗥𝗲𝗰𝗿𝘂𝗶𝘁𝗲𝗿 𝗣𝗵𝗼𝗻𝗲 𝗦𝗰𝗿𝗲𝗲𝗻 - Initial screening based on resume and team fit.
➡ 𝟭-𝟮 𝗢𝗻𝗹𝗶𝗻𝗲 𝗔𝘀𝘀𝗲𝘀𝘀𝗺𝗲𝗻𝘁𝘀 – Algorithm and coding questions.
➡ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗽𝗵𝗼𝗻𝗲 𝗶𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 - You will be interviewed either in person or via telephone with the hiring manager, who will be your direct manager. You will be asked one or two coding questions related to data structures and algorithms. Some questions from your resume.
➡ 𝗢𝗻𝘀𝗶𝘁𝗲 𝗟𝗼𝗼𝗽 (𝟱-𝟲 𝗶𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄𝘀) - Algorithm, System Design or Object Oriented Design, Behavioral questions.
◆ 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺𝘀 - Coding questions solved on a whiteboard.
◆ 𝗗𝗲𝘀𝗶𝗴𝗻 - Junior engineers will be asked Object Oriented Design questions, whereas senior engineers will be asked System Design questions.
◆ 𝗕𝗲𝗵𝗮𝘃𝗶𝗼𝗿𝗮𝗹 questions related to Amazon's leadership principles.
◆ 𝗕𝗮𝗿 𝗥𝗮𝗶𝘀𝗲𝗿 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 - A Bar Raiser is a skilled interviewer who acts as a neutral third party in the hiring process. Expect coding, design, and behavioral questions related to Amazon's leadership principles.

𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗧𝗶𝗽𝘀
𝟭) 𝗗𝗮𝘁𝗮 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲𝘀 - Practice common data structures like Array, String, HashTable, Tree, LinkedList, Stack, and Queue. Develop an understanding of the inner workings of these data structures. You will be expected to know the runtimes for common operations and how they use memory.
𝟮) 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺 - Practice divide and conquer, breadth-first search vs. depth-first search, and tree traversal algorithms.
𝟯) 𝗖𝗼𝗱𝗶𝗻𝗴 - Candidates are expected to write syntactically correct code.
𝟰) 𝗔𝗺𝗮𝘇𝗼𝗻'𝘀 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗣𝗿𝗶𝗻𝗰𝗶𝗽𝗹𝗲𝘀 -
https://www.amazon.jobs/en/principles

𝗧𝗼𝗽 𝗿𝗲𝗰𝗲𝗻𝘁 𝗔𝗺𝗮𝘇𝗼𝗻 𝘁𝗮𝗴𝗴𝗲𝗱 𝗖𝗼𝗱𝗶𝗻𝗴 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 𝗼𝗻 𝗟𝗲𝗲𝘁𝗖𝗼𝗱𝗲
1. Biggest Island (easy)
2. 'K' Closest Points to the Origin (easy)
3. Right View of a Binary Tree (easy)
4. Number of Islands (Medium)
5. Merge 'K' Sorted Lists (medium)
6. Tasks Scheduling (medium)
7. Merge Intervals (medium)
8. Zigzag Traversal (medium)
9. Minimum Meeting Rooms (hard)
10. Alien Dictionary (hard)

𝗥𝗲𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀
1) 14 Most Popular Amazon Coding Interview Questions
https://bit.ly/3eh6Q4m
2) Grokking the Coding Interview:
https://bit.ly/3yw1I3o
3) Grokking the Object Oriented Design Interview:
https://bit.ly/3EvLMSr
4) Grokking the System Design Interview:
https://bit.ly/3TaXBBK

#amazon #sde #datastructures #algorithms #systemdesign #leetcode