Today I wanted to talk about a useful pattern I started to use in my Go programs. Suppose you have some service that needs to connect to the database. This is how it probably looks like:
db, err := sqlx.Connect("postgres", DSN) if err != nil { return nil, errors.Wrap(err, "failed to connect to db") } Nice and familiar but why fail immediately? We can certainly do better!
We can just wait a little bit for a database in a loop because databases may come up later tha our service.

How to use the defer function in Golang to execute code at the beginning and the end of any function.

outils analyse code Go