Interview Questions

MySQL Interview Questions (2026): 30 Most Asked, With Answers

MySQL usage among developers dropped to 40.5 percent in the 2025 Stack Overflow Developer Survey, second place behind PostgreSQL’s 55.6 percent, a 15-point gap…

By Krishna Naga · July 30, 2026

Maven Interview Questions (2026): Build & Dependency Q&A, With Answers

Maven turned 21 in 2025, and it’s still the build tool most Java shops actually run. JetBrains’ State of Developer Ecosystem 2025 report puts…

By Dhanush · July 30, 2026

Linux Interview Questions (2026): 33 Commands & Scenarios, With Answers

The U.S. Bureau of Labor Statistics expects network and computer systems administrator jobs to shrink 4 percent between 2024 and 2034, even while the…

By Hari Priya Vemula · July 30, 2026

Hibernate Interview Questions (2026): Most Asked, With Answers

Hibernate ORM 7.0.0.Final shipped on May 19, 2025, finishing a namespace switch that started with version 6.0: every javax.persistence import became jakarta.persistence, with no…

By Prasanth Velithoti · July 29, 2026

GraphQL Interview Questions (2026): Most Asked, With Answers

On November 6, 2018, ten companies, Facebook, GitHub, Shopify, Airbnb, Twitter, Coursera, Apollo, Elementl, Hasura, and Prisma, agreed to hand GraphQL over to a…

By Shekhar Babu · July 29, 2026

Elasticsearch Interview Questions (2026): Most Asked, With Answers

Elastic’s own engineering guidance puts a healthy production shard somewhere between 20GB and 40GB, with 50GB quoted as the rough ceiling where things still…

By Prasanth Velithoti · July 29, 2026

Apache Spark Interview Questions (2026): Must-Know Q&A

Apache Spark’s official docs are versioned 4.1.2 as of this writing, sixteen years after Matei Zaharia and four coauthors described the project in a…

By Dhanush · July 29, 2026

Terraform Interview Questions (2026): IaC Q&A With Examples

Terraform showed up in 18.7 percent of professional developers’ toolchains in the 2025 Stack Overflow Developer Survey, just ahead of Ansible’s 11.2 percent and…

By Krishna Naga · July 29, 2026

REST API Interview Questions (2026): Design, Status Codes & Scenarios

REST is still the backbone of nearly every API interview loop in 2026, even after a decade of “GraphQL will replace it” takes. Postman’s…

By Prasanth Velithoti · July 28, 2026

MongoDB Interview Questions (2026): Most Commonly Asked, With Answers

A backend engineer candidate at a 40-person fintech startup lost the round in under two minutes in March 2026. The question wasn’t hard on…

By Hari Priya Vemula · July 28, 2026