Different ways to implement and manage threads in Java? Pros and cons of each approach. Why a thread pool size shouldn't be too large or too small? Different way of distributing/batching work across threads. Scaling with queues and databases. How would you implement a distributed rate limiter? (Hint: learn the rate-limiting algorithms). Pros and cons for every question asked.
Design a system that tracks files stored in S3. Given two API endpoints—one that lists the files and another that provides details such as file size—design a system that counts the total number of files and calculates their combined size.
Read a function, explain what it does, declare tests for it and find bugs.
How did you solve a performance optimization problem last time?
Which career achievement are you most proud of?"
Simple algorithm questions in live coding.
Lot about my experience and usual story of how you convince etc etc ., 2n round was design and one of the panelist is unprofessional and keeps interupting and never allowed me to explain solution. Not sure how Ikea still keeps him and allowing him to be as panelist.
Code base to modify. It had tests
Theory questions about DNS, TLS, HTTPS, Reverse Proxy, everything related security.
Check if string contains the exact same number of repetitions of every character. I.e. "aabb" - true, "aabbc" - false. Then check if removing a single character from the string can make it valid, i.e. "aabbc" - true, "aaabbbcc" - false
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