Golang

What problems can arise from a race condition when updating a user's balance, and what are some solutions in Go?

What factors influence latency when working with Garbage Collector?

How does WAL work? How does the write process occur?

Is it possible for duplicates to appear during replication? Can a user have two different balances?

What happens during a rolling update in Kubernetes?

What specific synchronization primitives are available in Go?

What is WAL Fallback? Describe the architecture.

What problems can arise when using Redis under high load?

Which components become bottlenecks when scaling from 1000 to 10000-20000 RPS?

How does the Garbage Collector work in Go?

What techniques for optimizing SQL queries and PostgreSQL will you use for rapid scaling?

What was the RPS on your services at Wildberries?

How does replication occur through WAL?

How does the Go scheduler work? Tell me about the GMP model.