Be gentle with your prod!

PHP Tour Clermont-Ferrand 2016 - Be gentle with your production
@odolbeau & @genes0r Benjamin de Bernardi & Olivier Dolbeau Benjamin de Bernardi & Olivier Dolbeau

@odolbeau & @genes0r @genes0r Lead Engineer Benjamin de Bernardi

@odolbeau & @genes0r @odolbeau Web Architect Olivier Dolbeau

@odolbeau & @genes0r 100€ 25€ 25€ 25€ 100€ 25€

@odolbeau & @genes0r 15M 20M 10M 5M 1M 2015 2014 2013 2012 2011 2010 2009 25M members worldwide Over 25 million members and growing 1.5 million+ joining each month

@odolbeau & @genes0r

@odolbeau & @genes0r 100+ people in the tech team

@odolbeau & @genes0r Lots of projects...

@odolbeau & @genes0r A lot of features to test.

@odolbeau & @genes0r Deploying big features is too risky. It can’t be done for everyone at the same time anymore.

@odolbeau & @genes0r It’s not always our fault!

@odolbeau & @genes0r Medias

@odolbeau & @genes0r Angry ops.

@odolbeau & @genes0r An angry ops is too dangerous! We need to find a solution to maintain the website up even when the traffic is high.

@odolbeau & @genes0r Let’s define our needs.

@odolbeau & @genes0r Deactivate a feature in production

@odolbeau & @genes0r Activate a feature

@odolbeau & @genes0r Slowly rollout a new feature

@odolbeau & @genes0r Change A/B test configuration.

@odolbeau & @genes0r Feature Y is only for 10% of the Italian users... Feature Y is only for 10% of the Italian users... Feature X is for France and maybe Belgium Feature X is for France and maybe Belgium ✓ ? 10% 10%

@odolbeau & @genes0r Device agnostic

@odolbeau & @genes0r No deployement

@odolbeau & @genes0r Feature flags Feature flags Feature flags Feature flags Feature flags

@odolbeau & @genes0r A 'Feature Flag' (or Feature Toggle) is the ability to turn features (sub- sections) of your application on/off at a moments notice. Wikipedia

@odolbeau & @genes0r What do we need? • a storage to store all feature flags and their rules • a admin interface to create / update / delete features flags • a PHP library to use in our application

@odolbeau & @genes0r Existing solutions • etsy / features • joshuaestes / feature-toggle • opensoft / rollout • qandidate / toggle

@odolbeau & @genes0r Existing solutions • etsy / features • joshuaestes / feature-toggle • opensoft / rollout • qandidate / toggle deprecated

@odolbeau & @genes0r Existing solutions • etsy / features • joshuaestes / feature-toggle • opensoft / rollout • qandidate / toggle deprecated no storage logic

@odolbeau & @genes0r Existing solutions • etsy / features • joshuaestes / feature-toggle • opensoft / rollout • qandidate / toggle deprecated no storage logic Good choice!

@odolbeau & @genes0r Existing solutions • etsy / features • joshuaestes / feature-toggle • opensoft / rollout • qandidate / toggle deprecated no storage logic Good choice! Even better!

@odolbeau & @genes0r http://labs.qandidate. com/blog/2014/08/18/a-new-feature- toggling-library-for-php/

@odolbeau & @genes0r Meet Qandidate\Toggle

@odolbeau & @genes0r Checking values: operators

@odolbeau & @genes0r Context

@odolbeau & @genes0r Putting it all together

@odolbeau & @genes0r http://labs.qandidate.com/blog/2014/08/19/ open-sourcing-our-feature-toggle-api-and-ui/ API UI

@odolbeau & @genes0r How it works for us?

@odolbeau & @genes0r What will we explain? Storages Operators & Context Strategies Devices Administration

@odolbeau & @genes0r Storages

@odolbeau & @genes0r Storages APCu Our own implementations.

@odolbeau & @genes0r • Primary data store • 1 key containing all toggles • 1 key / toggle containing its configuration (encoded JSON)

@odolbeau & @genes0r • Cache layer (60 seconds) • Encapsulation FTW • Encoded JSON APCu

@odolbeau & @genes0r Strategies

@odolbeau & @genes0r Operators

@odolbeau & @genes0r >= >= LessThan LessThanEqual MatchesRegex Percentage Available operators EqualsTo GreaterThan GreaterThanEqual InSet = [...] < %% % >

@odolbeau & @genes0r Implementation

@odolbeau & @genes0r Implementation - Context

@odolbeau & @genes0r Implementation - Context Mainly focused on the user.

@odolbeau & @genes0r Implementation - Context Can be website centric.

@odolbeau & @genes0r Implementation - Context Can also be feature centric.

@odolbeau & @genes0r Implementation - Manager

@odolbeau & @genes0r Implementation - Views

@odolbeau & @genes0r Devices

@odolbeau & @genes0r Mobile apps API Flags Native flags

@odolbeau & @genes0r Internal Flags Export JSON Get JSON

@odolbeau & @genes0r Internal Flags

@odolbeau & @genes0r Name Internal Flags

@odolbeau & @genes0r Strategy Internal Flags

@odolbeau & @genes0r Conditions Internal Flags

@odolbeau & @genes0r Context key Internal Flags

@odolbeau & @genes0r Flaggr Open Source Android : blablacar/flaggr-android iOS : blablacar/flaggr-ios (soon)

@odolbeau & @genes0r We have 100+ toggles.

@odolbeau & @genes0r We can define toggles / devices

@odolbeau & @genes0r Name Strategy Conditions summary Actions

@odolbeau & @genes0r Example

@odolbeau & @genes0r Rules : 1. Displayed in France only a. Will be activated for other countries later (BE, PL, NL) 2. Two kinds of results a. Beginners only b. Cheapest rides 3. Only for logged users 4. Activate for 50% of the users to control the impact

@odolbeau & @genes0r Flag

@odolbeau & @genes0r Implementation

@odolbeau & @genes0r Feature flags?

@odolbeau & @genes0r Yes.

@odolbeau & @genes0r Questions?

@odolbeau & @genes0r Thank you https://joind.in/talk/202e1 BlaBlaCar is hiring !

Be gentle with your prod!

Be gentle with your prod!

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