Redis - Transactions

Redis transactions allow the execution of a group of commands in a single step. Following are the two properties of Transactions.

All commands in a transaction are sequentially executed as a single isolated operation. It is not possible that a request issued by another cpent is served in the middle of the execution of a Redis transaction.

Redis transaction is also atomic. Atomic means either all of the commands or none are processed.

Sample

Redis transaction is initiated by command MULTI and then you need to pass a pst of commands that should be executed in the transaction, after which the entire transaction is executed by EXEC command.

redis 127.0.0.1:6379> MULTI 
OK 
List of commands here 
redis 127.0.0.1:6379> EXEC

Example

Following example explains how Redis transaction can be initiated and executed.

redis 127.0.0.1:6379> MULTI 
OK 
redis 127.0.0.1:6379> SET tutorial redis 
QUEUED 
redis 127.0.0.1:6379> GET tutorial 
QUEUED 
redis 127.0.0.1:6379> INCR visitors 
QUEUED 
redis 127.0.0.1:6379> EXEC  
1) OK 
2) "redis" 
3) (integer) 1 

Redis Transaction Commands

Following table shows some basic commands related to Redis transactions.