Pocket FM Interview Questions, Process, and Tips

Q1. Video editing test
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Q1. What are React lifecycle Method
Ans. 
React lifecycle methods are functions that are called at different stages of a component's life.
• Mounting: constructor(), render(), componentDidMount()

• Updating: render(), componentDidUpdate()

• Unmounting: componentWillUnmount()

• Error Handling: componentDidCatch()
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Q2. How would you optimize the api call on input change(Debouncing)
Ans. 
Debounce the API call on input change to optimize performance.
• Implement a debounce function to delay the API call until the user has finished typing.

• Set a time interval for the debounce function to wait before making the API call.

• Cancel the previous API call if a new input change occurs before the time interval is up.

• Use a loading spinner to indicate to the user that the API call is in progress.

• Consider using a caching...read more
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Q3. A code where I have to apply memoize
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Q4. Tell me about yourself
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Q5. What is usememo hook
Ans. 
useMemo is a hook in React that memoizes the result of a function and returns the cached value when the inputs don't change.
• useMemo is used to optimize performance by avoiding unnecessary re-renders.

• It takes two arguments: a function that returns a value and an array of dependencies.

• If any of the dependencies change, the function is re-executed and the new value is cached.

• Example: useMemo(() => expensiveFunction(a, b),...read more
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Q1. Product Thinking, Content consumption understanding, stake holder management, basic tech and analytics
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Q1. Core product thinking, core customer behaviour, content consumption psyche
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Leet code question medium

Leetcode questions medium

Q1. Design barber shop booking system
Ans. 
Design a barber shop booking system to manage appointments and services.
• Allow customers to book appointments online or through an app

• Include a calendar for customers to choose available time slots

• Integrate payment processing for services

• Send reminders to customers about upcoming appointments

• Allow customers to cancel or reschedule appointments

• Include a feature for customers to leave reviews and feedback

• Provide a dashboa...read more
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Q2. How would you scale it
Ans. 
Scaling a software system involves increasing its capacity to handle more users or data.
• Implementing load balancing to distribute traffic evenly across multiple servers

• Using caching mechanisms to reduce database load

• Optimizing database queries and indexes for faster retrieval

• Horizontal scaling by adding more servers to the system

• Vertical scaling by upgrading hardware resources on existing servers
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