Embedded / IoT

What would you do if the service started responding in 3 seconds instead of 100 milliseconds?

What indexes are available in PostgreSQL?

What is a reverse proxy and how can it be implemented?

What is connection pool in the database/sql package? How does it work?

What is the Transactional Outbox pattern?

What are the types of anomalies and which levels of isolation address them?

Tell me about the principles of SOLID

Tell me about HTTP: what versions are there and how do they differ? What is Head-of-Line blocking?