Distributed realtime chat with Elixir in 5 hours

A pet project which showcases the power of the Elixir ecosystem by utilizing Mnesia, Phoenix channels and Distributed Erlang to build a distributed chat.
What makes this project unique is that it actually connects different Slack Teams by proxying messages between them. It also indexes all YouTube and SoundCloud links to provide a way to search all the songs linked inside these channels.

Transcript

3. Distributed realtime chat with Elixir
4. Distributed realtime chat with Elixir in 5 hours
5. The Problem The Solution Takeaways
6. The Problem
7. The Initial Solutions Problems
8. The Initial Solutions Problems The applications stops working Network issues Node maintenance
9. Demo
11. The Solution
13. Mnesia
14. Mnesia Mnesia Mnesia
15. Mnesia Mnesia Mnesia
17. The Solution
18. The Solution Failure of one node doesn’t affect the others Can withstand network splits and maintenance Extremely easy to reason about
21. is_master? == true
22. is_master? == false
25. Store All writes are persistent All writes are replicated Handled the “Split Brain”problem No need for an external dependency
26. NodeMonitor
34. Takeaways Has been running for 5 months :rpc.multicall/4 is great DB as part of your application gives a lot of power WebPack needs 15 hours worth of configuration
35. ! @BogdanHabic " bogdan@tenderly.app Thanks