define redis record as url +parameters and access parameters in parse method

[ni-pixel]

I want to define my Redis record as URL + parameters and split the record into two parts (URL and parameters I mean that my record is not just a URL ) and then make a request. I also want to have access to parameters in the parse method which we define in our "myspider" class. I want to know in which method we read data from Redis and then make requests and how I can access to records in Redis in parse method in a class that we define (myspider class)