Symfony2 killed me! - Speaker Deck

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Symfony2 killed me! Olivier Dolbeau sfPot Nantes #1

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@odolbeau Web Architect Olivier Dolbeau

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From monolithic to microservices.

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Front Admin API Workers Monolithic application

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“It does everything, even coffee” Every developer ever

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So big!

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406 187 NLOC There are “only” 268 041 NLOC for symfony/symfony

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29 582 Commits There are “only” 15 506 commits for symfony/symfony There are “only” 10 228 commits for joyent/node There are “only” 9 266 commits for twbs/bootstrap There are 44 809 commits for rails/rails (but it’s ruby… #troll)

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~ 75 contributors There are 1 193 contributors for symfony/symfony

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3 536 tests There are 17 593 tests for symfony/symfony

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20 minutes to run them all 28 minutes for symfony/symfony… #fake

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Cons ● Conflicts ● Time consuming ● Maintenance ● Learning curve ● Side effects

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“With minor change comes major bugs” Myself based on its personal experience.

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Objectifs Our technical objectives at Blablacar

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Exponential growth 20 million members in April 2015

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countries NEW IN 2015 India Mexico Hungary Romania Serbia Croatia 19

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BlaBlaCar is deploying multiple datacenters.

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We need to localize our data.

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MICRO-SERVICES

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Micro-services Users, ratings, notifications, moderation...

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Overview

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Overview

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NO API!

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Enter the gateway...

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● It’s code. ● It use DDD. ● Everyone love it! ● It’s very well organized. ● There’s a lot of (very) strict rules. ● It separate business logic & data access. ● It’s a vendor! It’s easy to use everywhere!

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Global organisation

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How to: Get a rating

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Business

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Request

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Usage

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Usage

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Usage

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Usage

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Usage

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Response

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Handler

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Global organisation

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Data

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● Cache ready ● backend agnostic

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● Cache ready ● backend agnostic Encapsulation FTW!

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D BALStorage

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RedisStorage

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Gateway ● Flexible ● Usable everywhere ● Very strict ● Easy to test ● Deployed when needed ● Used for all new projects

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V3 Previous ecosystem

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Gateway V3 W W W W W C W C C C W Current ecosystem W ● 90 workers ● 40 commands