Micro-services can improve the performance of Magento 2.0 applications by separating core application processes. The document discusses how sessions, stock processing, quotes, and image resizing could each be developed as independent micro-services. This would allow those processes to run asynchronously and in parallel rather than blocking the main application. Micro-services help control memory usage and ensure applications can utilize asynchronous I/O. The presenter provides examples and encourages attendees to learn more about building micro-services using technologies like ReactPHP and PHPFastCGI.

1. MICRO-SERVICES
MAGENTO 2.0 PERFORMANCE
by Ivan Chepurnyi

2. ABOUT ME
One of lucky former members of Magento 1.x Core Team
I love to optimize performance
I give trainings and independent consultancy

3. Let's talk about PHP APP evolution

4. All started from the good old Apache's
mod_php

5. mod_php
Spawns
new PHP process
Server
Thread
Executes
PHP script
PHP
Initialization
Executes
Business Logic
Application
Bootstrap
Rendering the
Page

6. DRAWBACKS
Dynamic server processes was not limited
PHP process is alive unless all bytes transfered to a
remote connection
Every new PHP process takes time to start

7. Who is still running mod_php on production?

8. Then started an era of PHP-FPM

9. PHP-FPM
Waits
for Response
Server
Thread
Executes
PHP File
Takes running
process
FPM
FastCGI Process
Manager
Process Pool
1..n
Executes
Business Logic
Application
Bootstrap
Rendering the
Page

10. DRAWBACK
Not controlling your memory usage, might results in
memory over-usage by one of the processes

11. Now the era of async I/O PHP apps is
emerging...

12. Application Process Manager
Waits
for Response
Server
Thread
Fork/Re-use Process
with Business Logic
Application
Master Process
Rendering the
Page

13. DRAWBACKS
You have to control used memory
You have to ensure async IO on any operation
If single line of code fails, all app crashes

14. Is it possible with Magento 2?

15. The answer is micro-services...

16. What is a micro-service?

17. Micro-service is a component that runs as a separate
application

18. MICRO-SERVICE CANDIDATES IN MAGENTO 2.0

19. SESSIONS
Every page load requires I/O operation to cache storage
Dynamic requests in Varnish bootstrap full application

20. SESSION APPLICATION
Start Server
GC Inactive
Sessions every 5
minutes
Stop Server
IO to Redis IO to Redis
Lazy Load a
Session
IO to Redis

21. STOCK PROCESSING
Every order place request requires database lock on stock
table
You usually sacrifice stock integrity for performance
reasons

22. STOCK APPLICATION
Live proof of concept demo

23. QUOTE (SHOPPING CARTS)
Every change shopping cart is a write DB operation

24. QUOTE APPLICATION
Store quotes in memory
Delayed DB syncronization
Endless BI possibilities

25. IMAGE RESIZE
Images has to be resized sequentially
Cold image cache perfromance hit

26. IMAGE MICROSERVICE
Image can be resized in parallel
Main Application can utilize Async I/O

27. LEARN MORE
ReactPHP:
PHPFastCGI:
Sample counter server:
http://reactphp.org/
http://phpfastcgi.github.io/
http://bit.ly/counter-sample

28. Q&A
@IvanChepurnyi
ivan@ecomdev.org