Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Slicing up a monolithic application Why and how?
Search
Olivier Dolbeau
October 02, 2015
Programming
0
870
Slicing up a monolithic application Why and how?
Talk given with Benjamin Fraud (@bench1ps) at Paris Web 2015
Olivier Dolbeau
October 02, 2015
Tweet
Share
More Decks by Olivier Dolbeau
See All by Olivier Dolbeau
Throw new \Exception(); Oui, mais laquelle ?
odolbeau
1
210
Jane & Webby
odolbeau
0
390
Translating a monolingual application
odolbeau
2
550
DX: Developer eXperience
odolbeau
1
89
DX: Developer eXperience
odolbeau
1
540
EasyAdminBundle introduction
odolbeau
0
170
REX API Platform
odolbeau
0
1.3k
Features flags at BlaBlaCar
odolbeau
5
1.1k
25+ million members in 22 countries, how to scale with Symfony2
odolbeau
2
500
Other Decks in Programming
See All in Programming
GoのWebAssembly活用パターン紹介
syumai
3
10k
事業戦略を理解してソフトウェアを設計する
masuda220
PRO
22
6.2k
Kotlin エンジニアへ送る:Swift 案件に参加させられる日に備えて~似てるけど色々違う Swift の仕様 / from Kotlin to Swift
lovee
1
250
Claude Codeの使い方
ttnyt8701
1
130
Bytecode Manipulation 으로 생산성 높이기
bigstark
2
360
CursorはMCPを使った方が良いぞ
taigakono
0
140
ReadMoreTextView
fornewid
1
450
既存デザインを変更せずにタップ領域を広げる方法
tahia910
1
240
型付きアクターモデルがもたらす分散シミュレーションの未来
piyo7
0
800
設計やレビューに悩んでいるPHPerに贈る、クリーンなオブジェクト設計の指針たち
panda_program
2
160
KotlinConf 2025 現地で感じたServer-Side Kotlin
n_takehata
1
220
なぜ「共通化」を考え、失敗を繰り返すのか
rinchoku
1
340
Featured
See All Featured
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
660
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
920
Typedesign – Prime Four
hannesfritz
42
2.7k
Designing Experiences People Love
moore
142
24k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.8k
Building a Modern Day E-commerce SEO Strategy
aleyda
41
7.3k
Adopting Sorbet at Scale
ufuk
77
9.4k
Code Review Best Practice
trishagee
68
18k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
29
9.5k
How to Ace a Technical Interview
jacobian
277
23k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.3k
Transcript
Slicing up a monolithic application Why and how?
None
None
None
Slicing up a monolithic application Why and how?
What is a monolithic application?
“It does everything, even coffee” - Every developer ever
Website
Mobile apps
So big!
406 187 NLOC There are “only” 268 041 NLOC for
symfony/symfony
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)
75 contributors There are 1 193 contributors for symfony/symfony
20 minutes to deploy the application
“Everything should be made as simple as possible but not
simpler” Albert Einstein
None
➚ Pragmatism “Just get it done, ok?” - God
➚ Processes - “Let’s sync!” - “No way man” -
A developer and an ops, on a friday evening
➚ Learning “It must be somewhere in that file” -
A struggling mentor
➘ Conflicts “I’ve been rebasing for years, kill me now”
- A Git enthusiast
➘ Time consuming “The script has been frozen for 30
minutes, should I worry?” - A worried developer
➘ Maintenance “It works, but I can’t figure out why”
- Both of us
➘ Lack of expertise “I’ve only been there for 3
years for God’s sake!” - A senior developer
➘ Side effects “The website is broken” - A user
on Twitter
With minor change comes major bugs.
With minor change comes major bugs. Olivier, based on its
personal experience.
Objectifs BlaBlaCar today.
countries NEW IN 2015 India Mexico Hungary Romania Serbia Croatia
19
Exponential growth 20 million members in April 2015
What are micro- services?
Users Ratings Notifications Moderation Trips
Objectives - Going worldwide - Fast growing community
BlaBlaCar is deploying multiple datacenters.
We need to localize our data.
Different needs mean different storage.
There are only two hard things in Computer Science: cache
invalidation and naming things. Phil Carlton
The gateway
Business Data
- How to make it easier for everyone to work
together? - How to avoid conflicts? - How to foster expertise?
- Micro-startups - Independant teams - Focus on a specific
domain - Multi-skills - Limited lifespan Team work
None
- Easy to understand - Fast to test, fast to
deploy - Framework - Open-source - No more conflicts
- Long to bootstrap - Specific projects to handle configuration
- Increases ops complexity
None
Micro services are not a silver bullet!
Migrate from monolithic to micro services can be a pain.
t is worth it if you need it!
• Micro services are not a silver bullet! • Migrate
from monolithic to micro services is a pain. • It is worth it if you need it! Benjamin Fraud @bench1ps Olivier Dolbeau @odolbeau