Which databases have you worked with the most?

In working with Golang, I most often used the following databases:

• PostgreSQL — due to its reliability and support for complex queries, often used with libraries database/sql and pgx.
• MySQL — for projects with a simpler data structure and high load.
• Redis — for caching and session storage, used the go-redis client.

Example of connecting to PostgreSQL using pgx:

import (
    "context"
    "github.com/jackc/pgx/v4"
    "log"
)

func main() {
    conn, err := pgx.Connect(context.Background(), "postgres://user:password@localhost:5432/dbname")
    if err != nil {
        log.Fatal(err)
    }
    defer conn.Close(context.Background())

    var greeting string
    err = conn.QueryRow(context.Background(), "SELECT 'Hello, world!' ").Scan(&greeting)
    if err != nil {
        log.Fatal(err)
    }
    log.Println(greeting)
}

This stack allows for efficient work with different data types and scenarios.