OSEE/ReqAndDesign

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Contents

Logging

Requirements

  • handle thousands of entries per second
  • quickly accessable based on any combination of server, user, timestamp, log type

Design

id, time, agent, source, type, details (maybe in json format), duration

log event are defined as tokens with long and name (which is not in db)


at runtime enable/disable logging by agent, source, and type even progress is reported using logger

need to see what is still running even if server is unresponsive need to to cross server analysis

http://www.precisejava.com/javaperf/j2ee/JDBC.htm#JDBC104

-7 is used for duration on instantaneous events otherwise the actual duration in ms is updated upon completion (in the meantime -1 is used)


Exception Handeling

Requirements

Design