KEY operation of the Redis database and transaction management

purpose

　　To understand and master a variety of data types the command mode of operation, and the operation of various types of data values. Meanwhile, the main train KEY ability to use the operation command. KEY master key management information, transaction management and transaction rollback routine operations.

Exercise KEYS command, the management of KEY information.

　　KEYS pattern

　　RENAME

　　OF THE

　　EXISTS

　　MOVE

　　RENAMENX

　　PERSIST

　　EXPIRE

　　EXPIREAT

　　TTL

 

Transaction Management

　　Transaction is normally performed by the following command.

　　　　the Mutlt

　　　　Incr

　　　　exec

Roll back the transaction operation

　　MULTI

　　DISCARD

 to sum up

Through this experiment, relevant experience and knowledge can be divided into points summarized as follows:

1. Through the experiment, learning how to use the command to manage the way KEY, and transaction-related content. MULTI and DISCARD command for transaction rollback operations, is very important.
2. A plurality of commands within the block transaction based on the order which is put into a queue, and finally execute atomically by the EXEC command.
3. If you are monitoring a (or some) key using the WATCH command, then cancel all monitoring, equivalent to execute the command UNWATCH. Cancel the transaction, giving up all the commands in a transaction block.