redis persistence operation 1

Persistence
　　　　1. redis is an in-memory database, when redis server restart, restart the computer acquisition, data will be lost, we can redis data memory persistence saved to the hard disk file.
　　　　2. redis persistence mechanisms:
　　 1. a RDB: default, do not need to be configured to use this mechanism default
　　　　* in a certain time interval, the detection of the change key, and persistent data
　　　　1. Edit redis.windwos. conf file
　　　　　　# After 900 sec (15 min) IF AT Least. 1 Key changed
　　　　　　Save 900. 1
　　　　　　# After 300 sec (. 5 min) IF AT Least 10 Keys changed
　　　　　　Save 300 10
　　　　　　# After 60 sec IF AT Least 10000 Keys changed
　　　　　　Save 60 10000

　　　　 2 restart redis server, and specify the configuration file name
　　　　　　D: \ redis-2.8.9> redis-server.exe redis.windows.conf

　　 2. AOF of: logging mode, you can record the operation of each command. Each operation command may, persistent data
　　　　1. File Edit redis.windwos.conf
　　　　　　appendonly no (off aof) -> appendonly yes (opening AOF)

　　　　　　# Appendfsync always: Each time operations are carried out persistent
　　　　　　appendfsync everysec: once every second persistence
　　　　　　# appendfsync no: not for persistence