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I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
Reconciliation in React is the process of updating the virtual DOM to match the actual DOM.
Reconciliation is the process of comparing the virtual DOM with the actual DOM and making necessary updates.
React uses a diffing algorithm to efficiently update the DOM without re-rendering the entire component tree.
Key prop is important for React to efficiently reconcile elements and maintain component state.
Reconciliation can b...
Performance optimization in React is crucial for creating fast and efficient web applications.
Use React.memo and PureComponent to optimize rendering performance by preventing unnecessary re-renders.
Avoid unnecessary re-renders by using shouldComponentUpdate or React.memo with custom comparison functions.
Use code splitting and lazy loading to reduce initial load time and improve performance.
Optimize component rendering ...
Hooks in React are functions that let you use state and other React features in functional components.
Hooks were introduced in React 16.8 to allow state and lifecycle features in functional components.
useState() hook is used to add state to functional components.
useEffect() hook is used to perform side effects in functional components.
Custom hooks can be created to reuse stateful logic across components.
I applied via Recruitment Consulltant and was interviewed in Oct 2023. There were 4 interview rounds.
I applied via Naukri.com and was interviewed in Nov 2020. There were 3 interview rounds.
I applied via Recruitment Consultant and was interviewed in May 2019. There were 3 interview rounds.
I applied via LinkedIn and was interviewed before Jun 2021. There were 5 interview rounds.
Its a simple hackathon MCQ questions based on your skills.
posted on 20 Apr 2022
I applied via Recruitment Consulltant and was interviewed before Apr 2021. There was 1 interview round.
NoSQL databases are non-relational databases that store and retrieve data in a non-tabular format.
Document-oriented databases (MongoDB, Couchbase)
Key-value stores (Redis, Riak)
Column-family stores (Cassandra, HBase)
Graph databases (Neo4j, OrientDB)
Scaling refers to the process of increasing or decreasing the capacity of a system to handle more or less load.
Vertical Scaling: Adding more resources to a single node
Horizontal Scaling: Adding more nodes to a system
Load Balancing: Distributing the load across multiple nodes
Database Sharding: Splitting a database into smaller parts to distribute the load
Caching: Storing frequently accessed data in memory for faster acc
I applied via Referral and was interviewed before Apr 2021. There were 2 interview rounds.
A company designed the test basically to understand the nature of the interviewee. Simple test.
I applied via Naukri.com and was interviewed in Sep 2020. There were 3 interview rounds.
Event loop is a mechanism that allows non-blocking I/O operations in a single-threaded environment.
Event loop is used in programming languages like JavaScript and Python.
It manages the execution of multiple tasks by prioritizing them based on their priority level.
It continuously checks for new events and executes them in a loop.
It allows for efficient handling of I/O operations without blocking the main thread.
It is co...
let, var and const are used to declare variables in JavaScript with different scoping rules and mutability.
let and var are used to declare variables that can be reassigned later, but var has function scope while let has block scope.
const is used to declare variables that cannot be reassigned and have block scope.
Using const does not mean the value is immutable, only the variable reference is.
let and const were introduc...
I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.
I applied via Approached by Company and was interviewed before Apr 2021. There were 2 interview rounds.
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