Python

A little about OOP. What is the difference (between some OOP concepts)?

What is the storage in PostgreSQL responsible for replication and data recovery? How does it happen?

Have you worked with LLM for code generation?

Can you apply more than one decorator to a function?

Why was Python chosen as the language for server backend?

What creates vectors (embeddings)?

We added INSERT ON CONFLICT DO NOTHING, deployed to production. After some time, we check the logs — errors have almost disappeared, but sometimes very rarely they still appear. Can you suggest what might be going wrong?

What are p95, p99, and what other percentiles are there?

Can we make changes to the database within a GET request?

What is the algorithmic complexity of adding an element to a dictionary?

If we change the Primary Key not in one transaction, but in two different transactions, what problem can we encounter?

Can we create a table in PostgreSQL without a primary key? Will such a table work?

Have you worked with recursion? What happens if you create a loop in recursion and do not write an exit point correctly?