PulseMeter

PulseMeter is a gem for fast and convenient realtime aggregating of software internal stats through Redis. This is a client part of it backported for ruby 1.8.x. It allows to create sensors and send data to them, but neither reduce nor visualize.

It is supposed to use a standalone newer installation of ruby to perform reducing and visualisation.

Client usage

Just create sensor objects and write data. Some examples below.

require 'pulse-meter'
PulseMeter.redis = Redis.new

# static sensor examples

counter = PulseMeter::Sensor::Counter.new :my_counter
counter.event(1)
counter.event(2)
puts counter.value
# prints
# 3

indicator = PulseMeter::Sensor::Indicator.new :my_value
indicator.event(3.14)
indicator.event(2.71)
puts indicator.value
# prints
# 2.71

hashed_counter = PulseMeter::Sensor::HashedCounter.new :my_h_counter
hashed_counter.event(:x => 1)
hashed_counter.event(:y => 5)
hashed_counter.event(:y => 1)
p hashed_counter.value
# prints
# {"x"=>1, "y"=>6}

# timeline sensor examples

requests_per_minute = PulseMeter::Sensor::Timelined::Counter.new(:my_t_counter,
  :interval => 60,         # count for each minute
  :ttl => 24 * 60 * 60     # keep data one day
)
requests_per_minute.event(1)
requests_per_minute.event(1)
sleep(60)
requests_per_minute.event(1)
requests_per_minute.timeline(2 * 60).each do |v|
  puts "#{v.start_time}: #{v.value}"
end
# prints somewhat like
# 2012-05-24 11:06:00 +0400: 2
# 2012-05-24 11:07:00 +0400: 1

max_per_minute = PulseMeter::Sensor::Timelined::Max.new(:my_t_max,
  :interval => 60,         # max for each minute
  :ttl => 24 * 60 * 60     # keep data one day
)
max_per_minute.event(3)
max_per_minute.event(1)
max_per_minute.event(2)
sleep(60)
max_per_minute.event(5)
max_per_minute.event(7)
max_per_minute.event(6)
max_per_minute.timeline(2 * 60).each do |v|
  puts "#{v.start_time}: #{v.value}"
end
# prints somewhat like
# 2012-05-24 11:07:00 +0400: 3.0
# 2012-05-24 11:08:00 +0400: 7.0

Installation

Add this line to your application's Gemfile:

gem 'pulse-meter-client-backport'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pulse-meter-client-backport

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request