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[Redis] The difference between save and bgsave in redis

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Posted on 8/24/2017 5:04:16 PM | | |
Both the SAVE and BGSAVE commands call the rdbSave function, but they are called in different ways:
SAVE directly calls rdbSave, blocking the Redis main process until the save is complete. During the main process block,

The server cannot process any requests from the client.

BGSAVE forks out a child process that calls rdbSave and sends a signal to the main process after the save is complete, notifying the main process that the save is complete. The Redis server can still continue to process client requests while BGSAVE is running.

Persist save storage with the command:

./redis-cli -h ip -p port save
./redis-cli -h ip -p port bgsave






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