Ruby Technologies Activating The Development of COOKPAD

Ruby Technologies
Activating The Development of
Kenta Murata
ͷ։ൃΛࢧ͑Δ Ruby ͷٕज़
2012/12/10 Ruby Business Seminar
Tuesday, December 11, 12

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@mrkn

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In COOKPAD:
DevInfra Dept.
In Private:
CRuby committer

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What is
Development of
Testing in

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What is

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20,000K+ users/month
1,300K+ recipes

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Recipe Sharing
only?

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Sharing Recipes

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Premium Categories

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Recommended Menus

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Pro’s Recipe Store

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Deliver Ingredients

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Cooking Schools
Search & Reservation

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Sales Information

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User Collaboration

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1. Recipe Sharing
2. Premium Categories
3. Recommended Menus
4. Pro’s Recipe Store
5. Deliver Ingredients
6. Cooking Schools
7. Recipe Request
8. Q & A
9. Everyone’s Cafe
10. Sales Information

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These features are
developed in
the last half-year

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Ruby and Rails
Accelerate
Service Development

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How do we develop
COOKPAD?

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Development of

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Idea
Data Product
Learn
Measure
Build

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Talk
today
Idea
Data Product
Learn
Measure
Build

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Idea
Data Product
Learn
Measure
Build

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Idea
Measure

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Idea
Measure
Ruby
Rails
Chanko
Sara
RSpec
Jenkins
Capistrano
Unicorn
Fluentd

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http://www.flickr.com/photos/june29/3396011694/
Chanko

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Chanko is:

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Chanko is:
Plug-in for Rails

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Chanko is:
Plug-in for Rails
Feature Flipping System

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Chanko is:
Plug-in for Rails
Feature Flipping System
Open Source

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http://github.com/cookpad/chanko

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http://github.com/cookpad/chanko_sample

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Building the new feature

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Using topic branch

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Using topic branch
Modifying the main code

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Using topic branch
Modifying the main code
Deploying to staging

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Master branch

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Master branch
Topic branch

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Problems:

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Problems:
Degrade Stability

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Problems:
Degrade Stability
Low-Quality Code

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Problems:
Degrade Stability
Low-Quality Code
Slowdown Development

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Requirements:

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Requirements:
Service Stability

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Requirements:
Service Stability
Code Quality

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Requirements:
Service Stability
Code Quality
Fast Development

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http://www.flickr.com/photos/june29/3396011694/
Chanko

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http://bit.ly/chanko-railsconf2012

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In COOKPAD

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10+ Teams
In COOKPAD

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10+ Teams
1-3 Developers per team
In COOKPAD

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10+ Teams
30-40 Chanko units
In COOKPAD

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Usage

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Time-limited Feature
Usage

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User-limited Feature
Usage

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User-limited Feature
A/B Testing
Usage

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Service Stability
Code Quality
Fast Development
Chanko

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Happy ending?
(20min should have passed since the beginning)

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Testing in

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Service Stability
Code Quality
Fast Development
Chanko

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For what purpose?

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Idea
Data Product
Learn
Measure
Build

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For Users

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10+ Teams
30-40 Chanko units
In COOKPAD

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You can deploy
whenever you want
the revisions at which
the CI was passed

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CI build should be fast

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git push git push
CI
git
build #k build #k+1

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git push
10min
git push
CI
git
build #k build #k+1

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git push
10min 10min
git push
CI
git
build #k build #k+1

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git push
10min 10min
git push
CI
git
This commit can be deployed after 20min
build #k build #k+1

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git push
build #k build #k+1
N min N min
git push
CI
git
This commit can be deployed after 2N min

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The maximum CI waiting minutes 2N min
Prescribed working time
8 hours
== 480 min
The maximum count of deploy
480 / 2N
== 240 / N
N : The CI waiting time to deploy 40 times
240 / 40
== 6 min

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Developers should guarantee
their changes doesn’t break any tests
when they pushes the changes
into the master branch

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Requirements:

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Fast CI
Requirements:

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Fast CI
Fast developer test
Requirements:

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Fast CI
Fast developer test
Accept coincidence of testing
Requirements:

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6000
6500
7000
7500
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05/01 06/01 07/01
Ti
Examples count
6000
6500
7000
7500
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05/01 06/01 07/01
Ti
Examples count
The number of examples in
COOKPAD’s spec ﬁles

View Slide

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05/01 06/01 07/01
Ti
Examples count

View Slide

Fast CI
Fast developer test
Requirements:

View Slide

Fast CI
Fast developer test
Requirements:
Scalable test system

View Slide

Solution:

View Slide

Remote Spec
Distributed CI
Solution:

View Slide

Mechanism of
Remote RSpec

View Slide

Three Steps:

View Slide

Three Steps:
RSync code tree

View Slide

Three Steps:
RSync code tree
Prepare middlewares

View Slide

Three Steps:
RSync code tree
Prepare middlewares
Run RSpec remotely

View Slide

Remote RSpec:

View Slide

Remote RSpec:
Group spec ﬁles

View Slide

Remote RSpec:
Group spec ﬁles
Assign these groups
to workers

View Slide

Remote RSpec:
Group spec ﬁles
Assign these groups
to workers
Collect results

View Slide

To minimize execution time
Use running time
of each spec ﬁle
in the execution log

View Slide

./spec/models/country_spec.rb:0.239013
./spec/integration/pr/event_spec.rb:11.48333
./spec/integration/recipes_spec.rb:159.893117
./spec/integration/device/info_spec.rb:3.592802
./spec/libs/symboliclink_check_spec.rb:2.024438
./spec/controllers/advertisement_module_2_spec.rb:27.125839
./spec/libs/mail_functions_spec.rb:0.123556
./spec/models/generic_recipe_spec.rb:0.716866
./spec/libs/ruby_syntax_spec.rb:18.92995
./spec/libs/cookpad_logger_spec.rb:0.233645
./spec/controllers/device/myfolder_controller_spec.rb:7.037313
./spec/integration/trend_keyword_spec.rb:1.224577
./spec/models/search_category_recipe_spec.rb:2.82474
./spec/controllers/hello_controller_spec.rb:0.846888
./spec/controllers/api_controller_spec.rb:0.936871
./spec/integration/recipes_hot_notification_spec.rb:27.260698
./spec/models/diary_mailer_spec.rb:1.156989
(snip)
spec_execution_times.log

View Slide

Condition Execution time
single rspec too long; unmeasurable
8-core parallel_tests over 1 hour
5 workers,
each have 6-cores
about 15 min

View Slide


View Slide

$ grep cookpad:spec ci.log
(11) cookpad:spec --> 0.020000 0.130000 495.010000 (164.655632)
(07) cookpad:spec --> 0.020000 0.120000 493.490000 (166.317008)
(03) cookpad:spec --> 0.020000 0.120000 604.060000 (217.101263)
(12) cookpad:spec --> 0.020000 0.130000 711.730000 (217.371807)
(10) cookpad:spec --> 0.020000 0.130000 550.990000 (224.883867)
(08) cookpad:spec --> 0.020000 0.130000 632.330000 (226.134510)
(04) cookpad:spec --> 0.010000 0.130000 615.030000 (233.176576)
(06) cookpad:spec --> 0.020000 0.120000 592.900000 (232.820875)
(01) cookpad:spec --> 0.020000 0.130000 562.510000 (242.002139)
(13) cookpad:spec --> 0.020000 0.130000 560.200000 (241.834410)
(09) cookpad:spec --> 0.030000 0.120000 750.040000 (268.914216)
(00) cookpad:spec --> 0.020000 0.130000 692.820000 (280.803856)
(05) cookpad:spec --> 0.020000 0.140000 726.640000 (289.625570)
(02) cookpad:spec --> 0.010000 0.130000 679.850000 (437.498087)

View Slide

Wrong balancing

View Slide

Wrong balancing
Group before execution

View Slide

Wrong balancing
Varying runtime condition

View Slide

Wrong balancing
Varying runtime condition
RSpec implementation

View Slide

Future plan:

View Slide

Future plan:
Dynamic distribution

View Slide

Future plan:
Producer-consumer pattern

View Slide

Future plan:
Monkey-patch for RSpec

View Slide

Today’s Summary

View Slide

Idea
Data Product
Learn
Measure
Build

View Slide

Idea
Measure
Ruby
Rails
Chanko
Sara
RSpec
Jenkins
Capistrano
Unicorn
Fluentd

View Slide

Service Stability
Code Quality
Fast Development
Chanko

View Slide

Remote Spec
Distributed CI
Faster Testing

View Slide

Future plan:
Monkey-patch for RSpec

View Slide

Ruby Technologies
Activating The Development of
Any Questions or Comments?
ͷ։ൃΛࢧ͑Δ Ruby ͷٕज़

View Slide

Ruby Technologies Activating The Development of COOKPAD

Ruby Technologies Activating The Development of COOKPAD

Kenta Murata

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