Web applications scalability prolems - eslam mahmoud http://eslam.me

1. Web applications
Scalability problems
CAT Scope 12
Eslam Mahmoud
http://eslam.me

2. me
• Founder http://HuntEvents.net
• Web Developer http://AqarMap.com
• Started in software 2005
• My website http://eslam.me

3. What is Scalability ?

4. What is Scalability ?
“doing what you do in a bigger way”

5. When to start thinking about
Scalability ?

6. When to start thinking about
Scalability ?
“From Day 0”

7. How to think in Scalability ?

8. How to think in Scalability ?
the golden rule “Simplicity”

9. Scaling is like replacing all components
on a car while driving it at 100 km/h

10. 40+ Million user
*http://techcrunch.com/2012/04/12/how-to-scale-a-1-billion-startup-a-guide-from-instagram-co-founder-mike-krieger/

11. Do you really need to scale ?

12. Do you really need to scale ?
may be you just need a fix…

13. How to investigate ?

14. How to investigate ?
•Database ( Longest query & Most used query)
•Database connections
•Error logs ( Database & Logic )
•CPU ( Processing/User & Zompi )
•Large files
•When to cach & what to cach

15. Scalability lessons

16. Lesson #0 : Simplicity

17. Lesson #1 : Don’t over design

18. Lesson #2 : Iterate in scaling

19. Lesson #3 : Monitor every thing & ask

20. Lesson #4 : One tool for each task

21. Lesson #5 : surround yourself with
great advisors

22. Smile :)