Embedded / IoT

What indexes are available in PostgreSQL?

Reason for leaving the current job?

// ... call test code here? // ... some code here?

What are cyclic dependencies? Under which dependency injection method do we encounter them more often?

Why can't indexes be added to all columns of a table?

Why is the Inbox pattern needed if the Outbox already guarantees delivery?

The application has started to slow down, GC pauses have increased by 20 times. What should I do?

Questions about the PAM product?

What is java.lang.Error? How does it differ from Exception?

What are errors in Java? Have you encountered them in practice?

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

How to organize partitioning of the events table with 2 billion rows, growing by 10 million rows per day, with frequent range date queries?

What collection framework interfaces do you know? What common parent do List, Set, Queue, Map have?

// ... some code here?

Tell me more about the architecture: how many services were in your area of responsibility?

How to handle invalid messages in Kafka?

How was the batch size chosen?

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

How to prevent overbooking through PostgreSQL when booking the last seat simultaneously?

How is a partition with a key and without a key selected?