WebMD Interview Questions, Process, and Tips

They have two round First Coding in this you have to score 300. It on Code Signal Platform.

Q1. Solve question on CodeSignal Platform (very easy).
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Q2. Solve question on CodeSignal Platform (medium)
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In memory database related question where I was asked to create class to satisfy test case written already, 4 level of question were there.

Q1. How does Nodejs differentiate and handle synchronous and asynchronous task
Ans. 
Node.js uses event-driven architecture to handle asynchronous tasks while synchronous tasks are executed in a blocking manner.
• Node.js uses event loop to handle asynchronous tasks by offloading them to the system, allowing other tasks to continue without waiting.

• Synchronous tasks are executed in a blocking manner, meaning the program waits for each task to complete before moving on to the next one.

• Node.js provides non-b...read more
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Q2. How do you deploy your application
Ans. 
I deploy my application using containerization and continuous integration/continuous deployment (CI/CD) pipelines.
• Utilize Docker to containerize the application for easy deployment and scalability

• Use CI/CD pipelines such as Jenkins or GitLab CI to automate the deployment process

• Deploy to cloud platforms like AWS, Azure, or Google Cloud for reliable hosting

• Implement monitoring and logging tools like Prometheus and ELK s
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Q3. How to implement caching using rabitmq
Ans. 
Caching can be implemented using RabbitMQ by storing frequently accessed data in memory.
• Set up a RabbitMQ server to act as a message broker

• Publish data to RabbitMQ when it is fetched from the database

• Subscribe to messages in your Node.js application and store the data in memory

• Check the cache before fetching data from the database
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Q1. How to make Nodejs handle multiple thread
Ans. 
Node.js is single-threaded, but can handle multiple threads using child processes or worker threads.
• Use child processes to run multiple instances of Node.js

• Use worker threads for CPU-intensive tasks

• Leverage the cluster module to create a pool of worker processes
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Q2. Fork vs spawn and when you used this
Ans. 
Fork creates a new process while spawn launches a new process asynchronously.
• Fork is used to create child processes in Node.js, typically for running separate instances of the same application.

• Spawn is used to launch a new process asynchronously, allowing for communication between the parent and child processes.

• Fork is commonly used in cluster mode for load balancing in Node.js applications.

• Spawn is used for executing
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Q3. Senerio based db question
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Medium questions dp array graph recurrin

Q1. Leetcod easy question
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Q1. CORE JAVA , COding questions
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Q1. What is joins in SQL
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Question to be code, got 4 questions, marks were given on the basis of the number of testcase passed.

Q1. Question related to strings
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Q2. Question related to project
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