A piece of code that aggregates log file data:
path count response time(mean) response time(median) response time(mode) hero dyno
GET /api/users/{user_id}\/count_pending_messages 2430 25 15 11 web.2
GET /api/users/{user_id}\/get_messages 652 62 32 23 web.11
GET /api/users/{user_id}\/get_friends_progress 1117 111 51 35 web.5
GET /api/users/{user_id}\/get_friends_score 1533 228 143 67 web.7
GET /api/users/{user_id} 0 0 0
POST /api/users/{user_id} 2022 82 46 23 web.11
run ruby start.rb to run the code.
There are tests <3: rspec. I did not get it the first time so I updated the sample log file for test using data I actually can compute and can compare.