Java Backend Interview: The 15 Questions That Come Up
JVM memory model, GC algorithms, concurrency primitives, collections and Spring — the questions asked in nearly every round, with the answer depth interviewers want.
Interview Prep
High-frequency backend interview questions with clear, correct answers — plus system design practice.
All 4 tutorials
MySQL Interview: Indexes, Transactions and Locks
B+ tree structure, index failure patterns, isolation levels, MVCC and row/gap locks — the core of almost every MySQL interview.
Redis Interview: Model, Patterns and Failures
Single-threaded model, data types, persistence, eviction, cluster/sentinel, and the caching failure modes (penetration/breakdown/avalanche) interviewers drill on.
System Design Interview: URL Shortener to Feed System
The repeatable method: clarify → capacity estimation → API/DB → scale up → failure modes — worked on the three classics.