Merging Redis Databases
Install the redis-rdb-tools and follow the way to export rdb file to command line file:
For example:
$ rdb -c protocol new.rdb.save > new.rdb.cmd
$ rdb -c protocol old.rdb.save > old.rdb.cmd
The cmd file contains the redis commands.
Start a new redis-server with an empty rdb file, and load the two command files with the redis-cli command:
$ cat old.rdb.cmd | redis-cli --pipe
All data transferred. Waiting for the last reply...
Last reply received from server.
errors: 0, replies: 2903
$ cat new.rdb.cmd | redis-cli --pipe
All data transferred. Waiting for the last reply...
Last reply received from server.
errors: 0, replies: 94
Save the database:
127.0.0.1:6379> save
OK