Позитив Технолоджис

What does a Hash Join operation mean in terms of a query? Are there alternatives?

What is bloating in PostgreSQL and why does the physical size of the table grow even after data deletion?

Tell me about complex projects or cases you can boast of.

What were you doing before 2020?

What is ACID? How do Atomicity and Isolation work in PostgreSQL?

Что такое TLS и зачем нужен сертификат?

Name the entries for product implementation (at shipment, main taxation system, VAT)

How to implement parallel processing within a single consumer with waiting for completion? (Virtual Threads)

What are temporary and permanent differences? How are they formed in the system?

What motivated you to leave your last job?

Tell me about your tasks as a developer in your current company ([company]), what did you do, what tasks did you handle? More about artificial intelligence and agents.

Describe how you will solve the problem of caching the car price: data structure, synchronization, update.

Please tell me about an interesting experience of yours, something you're proud of, or some difficulties you faced and solved. Share an interesting task.