Helps

• Any tips for reading HttpPerf?

• LogReplay, any good gems or tips to replay requests from server logs?

Interestings

• Jeff dean mentioned some strategies dealing with week based reporting, and the oddities that arise when week 0 bleeds into the next year.

  Use Date#strf_time

  Week number:
  The week 1 of YYYY starts with a Sunday or Monday (according to %U
  or %W).  The days in the year before the first week are in week 0.
    %U - Week number of the year.  The week starts with Sunday.  (00..53)
    %W - Week number of the year.  The week starts with Monday.  (00..53)