matsimitsu

matsimitsu

Performance metrics
Name: `transaction_duration`        /Measurement  /`namespace`, `action`

Exception metrics
Name: `transaction_exception_count` /Counter      /`namespace`, `action`
Name: `transaction_exception_rate`  /Gauge        /`namespace`, `action`

Queue duration metrics
Name: `transaction_queue_duration`  /Measurement  /`namespace`

matsimitsu

namespace :database do
  task :current_visits => :environment do
    Appsignal.set_gauge("current_visits", CurrentVisit.count)
  end

  task :done do
    # Wait for data to flush
    Appsignal.stop
  end

matsimitsu

# Consumer that updates dashboards for an app
# through the AppSignal GraphQL API.

require 'rest-client'
require 'active_support'
require 'active_support/core_ext'

APPID = '' # app/site id, can be found in the url (/sites/<id>)
TOKEN = '' # Can be found on https://appsignal.com/users/edit

matsimitsu

-
  title: 'Heroku Postres'
  graphs:
    -
      title: Connections
      kind: gauge
      format: number
      draw_null_as_zero: false
      fields:
        - active_connections

matsimitsu

db.foo.insertMany([
  { email: 'wes@example.com', course: 'a', purchaseDate: 10 },
  { email: 'wes@example.com', course: 'b', purchaseDate: 20 },
  { email: 'wes@example.com', course: 'c', purchaseDate: 5 },
  { email: 'nancy@example.com', course: 'c', purchaseDate: 6 },
  { email: 'nancy@example.com', course: 'b', purchaseDate: 10 },
  { email: 'nancy@example.com', course: 'a', purchaseDate: 5 },
  { email: 'nancy@example.com', course: 'd', purchaseDate: 1 },
  { email: 'john@example.com', course: 'd', purchaseDate: 1 },
  { email: 'bob@example.com', course: 'a', purchaseDate: 1 }

matsimitsu

fn main() {
    let str = "000030.294";
    let float: f32 = str.parse().unwrap();
    println!("{:?}", float);
}

// Running this on a Raspberry Pi returns:
//pi@raspberrypi ~ $ RUST_BACKTRACE=1 ./p1-monitor
//0.000000000000000000000000000000000000000000042

matsimitsu

require "appsignal"

Appsignal.config = Appsignal::Config.new(
  File.expand_path(File.dirname(__FILE__)),
  "development"
)

Appsignal.start

class DailyProcessor

matsimitsu

-
  title: 'Sidekiq Queues'
  graphs:
    -
      title: 'Sidekiq Queue count'
      kind: count
      filter: queue_(.+)_count
      format: number
    -
      title: 'Sidekiq Queue durations'

matsimitsu

# config/initializers/sidekiq.rb
require 'socket'

class MemoryUsageMiddleware
  attr_reader :active, :max_oom, :shutdown
  cattr_reader :cached_mb, :last_checked_at, :hostname

  def self.start
    @@start ||= Time.now
  end