Roadmaps

What a loop actually asks, by role and language. Each roundup is the recurring cluster of questions - and a map straight to the topics that close them.

13 of 13

By role & stack

questions

"Frontend interview questions: JS internals, CSS, performance"

The frontend loop questions that actually repeat, from event-loop ordering to CLS diagnosis and ARIA, with the traps interviewers grade for.

July 11, 2026 questions

"React interview questions: re-renders, hooks, state"

Real React loop questions, junior to senior: why a component re-renders, stale closures in hooks, where state lives, hydration, controlled inputs.

July 11, 2026 questions

Backend interview questions in 2026: the full map

The questions a backend loop actually asks, from database internals to the system design round, with the traps interviewers grade and the lesson for each area.

July 11, 2026 questions

System design interview questions and how to answer them

The system design round decoded: the answer method, the URL shortener, feed and rate limiter problems, and the primitives each one quietly tests.

July 11, 2026

By language

PythonThe Python questions backend loops actually ask, from the GIL to asyncio blocking traps and mutable defaults, with the answers interviewers grade.JavaThe Java questions that repeat in real backend loops, junior to senior, with the traps interviewers grade. JVM memory, the JMM, HashMap, virtual threads.GoThe Go questions backend loops actually ask: channel semantics, goroutine leaks, the GMP scheduler, slice append, and the typed-nil trap.C#The C# questions that repeat in real .NET loops: boxing, the sync-over-async deadlock, ConfigureAwait, LINQ deferred execution and multiple enumeration.PHPPHP interview questions on the shared-nothing lifecycle, PHP-FPM and OPcache, == vs ===, the PHP 8 comparison change, enums and readonly. With traps.RustThe Rust questions that recur in backend loops, junior to senior, with the borrow-checker and async traps interviewers listen for. From our grading rubric.Node.jsReal Node.js loop questions: libuv phases, nextTick ordering, backpressure, memory leaks, and graceful shutdown, with the traps interviewers plant.SQLThe SQL questions that appear in real backend loops, junior to senior, with the traps interviewers listen for. From the rubric behind our grader.DatabasesThe database round past query syntax: EXPLAIN and index order, isolation anomalies, schema modeling, NoSQL choice, replication and sharding.

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