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I applied via Approached by Company and was interviewed before Jul 2023. There were 2 interview rounds.
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Design a tagging system for organizing and categorizing data.
Consider the types of data to be tagged (e.g. text, images, videos)
Create a standardized set of tags and categories
Allow for multiple tags to be assigned to each piece of data
Implement a search function based on tags
Consider implementing a hierarchy of tags for more complex categorization
Medium questions, related to voting
Design a system for tagging system
Consider scalability and performance requirements
Use a unique identifier for each tag
Implement a search functionality for tags
Ensure data consistency and integrity
Consider security measures to prevent unauthorized access
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
Efficient database read design
Use indexing to quickly locate data
Minimize the number of reads by fetching only necessary columns
Consider denormalizing data for faster reads
Implement caching mechanisms to reduce database load
Optimize queries by avoiding unnecessary joins
Use indexing to access data directly without iterating
Implement a database with proper indexing on key fields
Utilize data structures like hash tables or binary search trees for quick access
Consider using caching mechanisms to store frequently accessed data
Optimize queries by using efficient algorithms like merge sort or quicksort
I applied via Recruitment Consultant and was interviewed in Jan 2020. There were 7 interview rounds.
Credit card transaction lifecycle involves authorization, clearing, and settlement processes.
Authorization: Initial approval of the transaction by the card issuer.
Clearing: The process of exchanging transaction details between the merchant and the card issuer.
Settlement: The final transfer of funds from the cardholder's account to the merchant's account.
Chargeback: A reversal of a transaction due to disputes or fraud.
I...
posted on 9 Mar 2022
I was interviewed before Mar 2021.
I applied via LinkedIn and was interviewed in Feb 2024. There were 2 interview rounds.
HashMap is not thread-safe while ConcurrentHashMap is thread-safe and allows concurrent modifications.
HashMap is not thread-safe and can lead to ConcurrentModificationException if modified concurrently.
ConcurrentHashMap allows concurrent modifications without the need for external synchronization.
ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple threads to operate on differen...
I applied via Recruitment Consultant and was interviewed in Jan 2020. There were 7 interview rounds.
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