To find max sum in tree(Expectations kept changing making question unsolvable)
React Developer Interview Questions
3,476 react developer interview questions shared by candidates
Motivations for wanting the role
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what api library do i use for reactjs
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1.Promise and settimeout output ques console.log("start") setTimeout(() => { console.log("settimeout") }, 1000); var data=new Promise((resolve, reject) => { setTimeout(() => { console.log("inner") resolve("resolves") }, 0); console.log("second") }); console.log("end")
Suppose you are designing an e-commerce system. There are millions of users, millions of orders, and a very high read/write frequency. How would you design the database schema to ensure: Fast lookups of orders by user, Scalability across multiple servers, Data consistency when multiple users are placing orders at the same time, And also ensure no user can see another user’s data? Explain whether you would use SQL or NoSQL, justify your choice, and discuss indexing strategies, sharding, and transaction isolation levels."
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