Jitsi Meet: our tale of blood, sweat, tears and love

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Our story about scaling meet.jit.si amidst the COVID-19 worldwide crisis. Video here: https://youtu.be/APVp-20ATLk?t=850

Technology

Jitsi Meet
Our tale of blood, sweat, tears and love.
Open Tech Will Save Us 2020

"Calm waters" by Abevil is licensed under CC BY-NC-ND 2.0
It’s calm before the storm

Getting Ready
"hope" by siette is licensed under CC BY-NC-ND 2.0

The Italian Flood
"Mexico City - Tourist Bus Ride" by CarlosVanVegas is licensed under CC BY 2.0

What went wrong?
"Collapse" by Jon Scally is licensed under CC BY-NC-ND 2.0

Hunders of support emails 
and forum posts

ulimit -n
Too small! We used prlimit to raise it in production.

Ephemeral port exhaustion
Add more IP addresses to our load balancers and HAProxys.

Inter-server traﬃc
Having so many servers was killing us, 
we made each JVB connect only to its shard.

This lasted for days
Standup turned into a Situation Room.

Reacting to Feedback
"File:Feedback Terminal With A Touchscreen.jpg" by Littokki is licensed under CC BY-SA 4.0

We’ll always have Paris
"File:Eiffel Tower - Tour Eiffel (34377053374).jpg" by Nan Palmero from San Antonio, TX, USA is licensed under CC BY 2.0

AWS Global Accelerator
Instrumental to balance the load across regions.

The numbers (so far)
"XYZ" by Marina Lewandowska is licensed under CC BY-NC-ND 4.0

Optimize our use of resources
Optimize for transit cost by moving JVBs out of AWS

Move away from 
HAProxy stick tables
Split-brains are unavoidable with the current scheme.

Jitsi Meet: our tale of blood, sweat, tears and love

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Jitsi Meet: our tale of blood, sweat, tears and love

1. Jitsi Meet Our tale of blood, sweat, tears and love. Open Tech Will Save Us 2020

2. "Calm waters" by Abevil is licensed under CC BY-NC-ND 2.0 It’s calm before the storm

3. meet.jit.si architecture

7. 📍 📍 📍 📍 📍 📍 📍

8. Getting Ready "hope" by siette is licensed under CC BY-NC-ND 2.0

9. The Italian Flood "Mexico City - Tourist Bus Ride" by CarlosVanVegas is licensed under CC BY 2.0

10.

11.

12. 🔥 🔥 🔥

13. 🔥 🔥 🔥 🔥 🔥 🔥

14. 🔥 🔥 🔥 🔥 🔥 🔥 🔥 🔥

15. 🔥 🔥 🔥 🔥 🔥 🔥 🔥 🔥 🔥

16. What went wrong? "Collapse" by Jon Scally is licensed under CC BY-NC-ND 2.0

17. Panic Mode ON 😱😱😱🙀🙀🙀

18. Tens of millions of  dropped packets

19. Pagers going oﬀ non-stop

20. Users getting 504s  left and right

21. Tons of ⭐ reviews on  mobile stores

22. Hunders of support emails  and forum posts

23. ulimit -n Too small! We used prlimit to raise it in production.

24. Ephemeral port exhaustion Add more IP addresses to our load balancers and HAProxys.

25. Inter-server traﬃc Having so many servers was killing us,  we made each JVB connect only to its shard.

26. This lasted for days Standup turned into a Situation Room.

27. Reacting to Feedback "File:Feedback Terminal With A Touchscreen.jpg" by Littokki is licensed under CC BY-SA 4.0

28.

29.

30. Turning it up to 11

31. Turning it up to 11

32. We’ll always have Paris "File:Eiffel Tower - Tour Eiffel (34377053374).jpg" by Nan Palmero from San Antonio, TX, USA is licensed under CC BY 2.0

33. 📍 📍 📍 📍 📍 📍 📍 📍

34. AWS Global Accelerator Instrumental to balance the load across regions.

35. The numbers (so far) "XYZ" by Marina Lewandowska is licensed under CC BY-NC-ND 4.0

36. 60x More conferences

37. 108x More participants

38. 180x More traﬃc

39. 1000s of servers Instead of 10s

40. Going Forward

41. Optimize our use of resources Optimize for transit cost by moving JVBs out of AWS

42. Move away from  HAProxy stick tables Split-brains are unavoidable with the current scheme.

43. Address more feedback Keep it coming!

44. Thank you 🙏

Jitsi Meet: our tale of blood, sweat, tears and love

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