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dump redis in json and and reload into redis using python
1:dump redis data to file
dump from host db0
python redis-dump.py -H 127.0.0.1 -p 6379 -w passwd -d 0 -o road.txt
key filter with road_*:
python redis-dump.py -H 127.0.0.1 -p 6379 -w passwd -d 0 -k road_* -o road.txt
2:load data into redis db0 from dumped file
python redis-load.py -H 127.0.0.1 -p 6379 -w passwd -d 0 road.txt