Redis dump.rdb appendonly.aof File path modification

# The working directory.
#
# The DB would be is written inside this directory, with the filename specified
# above using the ' dbfilename ' configuration directive.
#
# The Append only File would also is created inside this directory.
#
# Note that you must specify a directory here, not a file name.
Dir./

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The default is the relative path after startup, which is where your redis starts, dump.rdb files, or appendonly.aof
The file will be generated in the directory where it is launched;

This is why some people reboot after the key value disappears, it is because another Ump.rdb file or appendonly.aof

It is recommended to change to an absolute path.

dir/usr/local/redis/data/