Milliseid tehingu isolatsiooni tasemeid olete praktikas käsitsi seadistanud?

In practice with databases in Go, it is often necessary to manually set transaction isolation levels to control parallelism and prevent concurrency issues. The main isolation levels I have used:

• Read Uncommitted — the lowest level, allows reading uncommitted changes, which can lead to "dirty" reads.
• Read Committed — prevents reading uncommitted data but allows non-repeatable reads.
• Repeatable Read — guarantees that data read within a transaction will not change until it completes.
• Serializable — the strictest level, provides full transaction isolation as if they were executed sequentially.

In Go, using the database/sql package, the isolation level can be set via the BeginTx method with the parameter sql.TxOptions{Isolation: sql.LevelSerializable} and others. For example:

ctx := context.Background()
tx, err := db.BeginTx(ctx, &sql.TxOptions{Isolation: sql.LevelRepeatableRead})
if err != nil {
    // error handling
}
// work with the transaction