Posts

All the articles I've posted.

• Java Interview Prep #5: Apache Kafka — Junior to Senior

  Published: 10 Aug, 2026 |  at  10:20 AM

  Event-driven systems on Kafka — delivery semantics, replication, partitioning for order, consumer lag, and the dead-letter queue every production consumer needs.

• Java Interview Prep #4: Database & SQL — Junior to Senior

  Published: 10 Aug, 2026 |  at  10:15 AM

  The database layer decides real-world scale. Senior candidates must speak fluently about indexing, transaction isolation, connection pooling, and the ORM trap.

• Java Interview Prep #6: Microservices — Junior to Senior

  Published: 10 Aug, 2026 |  at  10:10 AM

  Microservices at senior level is mostly about knowing when NOT to use them — resilience patterns, service communication, and distributed transactions.

• Java Interview Prep #2: OOP & Design Principles — Junior to Senior

  Published: 10 Aug, 2026 |  at  10:05 AM

  OOP at the senior level is applied SOLID, composition over inheritance, and interface design at scale — not reciting definitions. Junior names the principles; senior shows where each one costs you.