Golang

What is the purpose of the Transactional Inbox pattern? Is it the reverse of the Transactional Outbox?

What data types can be used as keys in a map?

How to create a custom error in Go that can be passed through the error interface?

Can a slice be equal to nil? How does a nil slice differ from an empty slice?

Why was PostgreSQL chosen for storing posts? How to determine which technology handles the load without sharding and replication (Postgres, Kafka, Redis, service in Go)?

Why is ClickHouse suitable for storing trip history in Yandex.Taxi? Would reading specific user trips be a problem?