Very simple way to log events into a 1GB capped collection on the current Meteor server

Simple_capped_logging_collection.coffee

Logs = new Mongo.Collection 'logs'

# Collection capped at 1GB and
# http://docs.mongodb.org/manual/core/capped-collections/
# https://github.com/meteor/meteor/blob/07b6a2245a1e091830844881e7376c38adda3592/packages/mongo/collection.js
Logs._createCappedCollection 1000000000, 8000000

Meteor.methods
  'log': (source, event) ->
    @unblock()
    Logs.insert
     source: source,
     event: event,
     time: new Date
    console.log '[%s] %s', source, event