How do I handle transactions in Redis using Go?

How do I handle transactions in Redis using Go?

You can use Redis transactions with the MULTI and EXEC commands. In Go, you can use the go-redis library to manage this.

Can you show me a code example?

Sure! Here's a simple example:

package main

import (
    "github.com/go-redis/redis/v8"
    "context"
)

func main() {
    ctx := context.Background()
    rdb := redis.NewClient(&redis.Options{
        Addr: "localhost:6379",
    })

    // Start a transaction
    pipe := rdb.TxPipeline()
    pipe.Set(ctx, "key1", "value1", 0)
    pipe.Set(ctx, "key2", "value2", 0)
    _, err := pipe.Exec(ctx)
    if err != nil {
        panic(err)
    }
}

This code sets two keys in a transaction.

What happens if one of the commands fails?

If one of the commands fails, the entire transaction will be aborted, and none of the commands will be executed.

Is there a way to watch keys before executing the transaction?

Yes, you can use the WATCH command to monitor keys. If any watched key is modified before the EXEC command, the transaction will fail.