visnup

Server.prototype.checkThreshold = function(metric, template, data) {
  var t = metric.threshold;
  if (t) {
    var last = this.lastValues[metric._id]
      , v = parseFloat(data[template.primary]);

    if (!isNaN(v))
      this.lastValues[metric._id] = v;

    if (last >= t && t > v)

visnup

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visnup

1. Hi, I'm Visnu. I'm a co-founder of Fortnight Labs, a data consultancy. This is a product we've been working on mostly for ourselves and as a future platform.

2. http://monitaur.net

   • monitaur is monitoring itself
   • this is real time
   • start focused with the server metrics vertical, but
   • we just added custom metrics (# people using the site)

3. sign up as a new user

• show threshold alert

visnup

    # throw this bad boy at the end of your application.rb.

    # rails will then treat these exceptions like it does
    # ActiveRecord::RecordNotFound and others by showing you a nice backtrace
    # on localhost and the static error pages in production.

    ActionDispatch::ShowExceptions.rescue_responses.update({
      'Mongoid::Errors::DocumentNotFound' => :not_found,
      'BSON::InvalidObjectId' => :not_found,
      'SecurityError' => :unauthorized

visnup

require "rubygems"
require "spec/spec_helper"

class Coffee
  include Mongoid::Document

  field :beany
  references_many :beans  #, :validate => false works
end

visnup

class Mongoid::Relations::Metadata
  # @return [ true, false ] False unless explictly set to true.
  def validate?
    self[:validate]
  end
end

visnup

require 'rubygems'
require 'spec/spec_helper'

class Coffee
  include Mongoid::Document
  references_and_referenced_in_many :beans #, :inverse_of => nil
end

class Bean
  include Mongoid::Document

visnup

visnup

require 'rubygems'
require 'benchmark'
require './spec/spec_helper'

p = Person.create

Benchmark.bm do |x|
  x.report("new")    { 10_000.times do Person.new end }
  x.report("reload") { 10_000.times do p.reload end }
  x.report("find")   { 10_000.times do Person.find(p.id) end }

visnup

require "spec_helper"

class ValInheritanceParent
  include Mongoid::Document

  field :parent_value

  embeds_many :val_inheritance_embed
  references_many :val_inheritance_ref