How would you design a logging system for something like Google , you should be able to query for the number of times a URL was opened within two time frames.

i/p : start_time , end_time , URL1 

o/p : number of times URL1 was opened between start and end time.

Some specs : Database is not an optimal solution A URL might have been opened multiple times for given time stamp. A URL might have been opened a large number of times within two time stamps. start_time and end_time can be a month apart. time could be granular to a second.