What is solved by Serializable?

The Serializable isolation level in databases addresses the problem of preventing anomalies associated with concurrent transaction execution. Serializable guarantees that the result of concurrent transactions will be the same as if they were executed sequentially one after another.

This prevents issues such as:

• Phantom reads
• Non-repeatable reads
• Dirty reads

In Go (Golang), the language itself does not manage transactions, but when working with databases through drivers and ORM, you can specify the isolation level. Serializable is the strictest level, ensuring maximum data consistency but may reduce performance due to locking.

Example of setting the isolation level in Go using database/sql:

trx, err := db.BeginTx(ctx, &sql.TxOptions{
    Isolation: sql.LevelSerializable,
})
if err != nil {
    // handle error
}
// work with transaction
err = trx.Commit()

Thus, Serializable solves the problem of data correctness during concurrent access, providing strict transaction sequencing.