PhonePe prep

PhonePe Mid-level (3–5 years) Technical deep dive

#31

When would you choose microservices over a monolith? — PhonePe interview

Reported in PhonePe interview loops. Architecture trade-off question for mid-level backend and platform roles.

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PhonePe Mid-level (3–5 years) Technical deep dive

#32

Explain CI/CD and what a typical pipeline includes — PhonePe interview

Reported in PhonePe interview loops. DevOps fundamentals for mid-level engineers discussing automation and quality gates.

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PhonePe Mid-level (3–5 years) Technical deep dive

#33

What is the difference between unit and integration tests? — PhonePe interview

Reported in PhonePe interview loops. Testing strategy question covering pyramid, mocks, and confidence vs speed.

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PhonePe Mid-level (3–5 years) Technical deep dive

#34

How does HashMap work internally in Java? — PhonePe interview

Reported in PhonePe interview loops. Java-specific collections question on buckets, hashing, and resize behavior.

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PhonePe Mid-level (3–5 years) Technical deep dive

#35

Explain the JavaScript event loop, call stack, and task queues — PhonePe interview

Reported in PhonePe interview loops. Core JavaScript concurrency model question for frontend and Node.js roles.

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PhonePe Mid-level (3–5 years) Technical deep dive

#36

What is the Python GIL and how does it affect concurrency? — PhonePe interview

Reported in PhonePe interview loops. Python-specific question on threading limits and multiprocessing alternatives.

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PhonePe Mid-level (3–5 years) Technical deep dive

#37

When would you use useState versus useReducer in React? — PhonePe interview

Reported in PhonePe interview loops. React hooks question on local state complexity and predictable updates.

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PhonePe Mid-level (3–5 years) Technical deep dive

#38

How does Node.js handle concurrent requests with a single thread? — PhonePe interview

Reported in PhonePe interview loops. Node.js architecture question on libuv, event loop phases, and worker threads.

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PhonePe Mid-level (3–5 years) Technical deep dive

#39

Compare ACID and BASE consistency models in databases — PhonePe interview

Reported in PhonePe interview loops. Distributed data question bridging SQL transactions and NoSQL eventual consistency.

Medium Read answer →