An Nginx upstream module, used to save the request body(file) to Redis list
redis_pass
syntax: redis_pass <host>:<port>
context: location
Specify the Redis server backend
redis_db
syntax: redis_db <db index>
context: location
Specify db index, should be between 0 and 15
redis_key
syntax: redis_key <name>
context: location
Specify the redis key