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BEAM way of life
How you can solve problem in BEAM world
GPad
Born to be a developer with an interest in distributed system.
I develop using many languages like C++, C#, js and ruby. I had fallen in love with
functional programming, especially with elixir, erlang.
- Twitter: https://twitter.com/gpad619
- Github: https://github.com/gpad/
- Medium: https://medium.com/@gpad
CTO & founder of coders51
Functional Language
- Immutability
- No global variables
- Where do I put my state?
- How can we share state? (We can’t)
- Examples ...
GenServer
- Keep the state in the process
- “Share” state between other processes
- Synchronize
- But it’s a Bottleneck
- Spawn & reply
- Examples ...
Not only GenServer
- Gen_statem (ex gen_fsm)
- Implement a state machine
- Can be supervised
- Can manage timer of different type
- GenEvent
- GenStage
- Flow
- Supervisor
Supervisor
- Not only for GenServer
- Which type?
- One_for_one
- One_for_all
- Rest_for_one
- Simple_one_for_one
- Make some example
- You can add it dynamically (Example)
Console/Attach
- You are inside the same VM
- It’s not a different process on same DB
- You can inspect the behavior of some processes
- You can add code
- You can Fix the code
Console - Examples
Advice
- Try to use OTP construct
- Don’t reinvent the wheel
- Processes means concurrency
- Use if/when necessary
- Inspect a running system
- Enjoy with BEAM!!!!
Thank you!

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Beam way of life

  • 1. BEAM way of life How you can solve problem in BEAM world
  • 2. GPad Born to be a developer with an interest in distributed system. I develop using many languages like C++, C#, js and ruby. I had fallen in love with functional programming, especially with elixir, erlang. - Twitter: https://twitter.com/gpad619 - Github: https://github.com/gpad/ - Medium: https://medium.com/@gpad CTO & founder of coders51
  • 3. Functional Language - Immutability - No global variables - Where do I put my state? - How can we share state? (We can’t) - Examples ...
  • 4. GenServer - Keep the state in the process - “Share” state between other processes - Synchronize - But it’s a Bottleneck - Spawn & reply - Examples ...
  • 5. Not only GenServer - Gen_statem (ex gen_fsm) - Implement a state machine - Can be supervised - Can manage timer of different type - GenEvent - GenStage - Flow - Supervisor
  • 6. Supervisor - Not only for GenServer - Which type? - One_for_one - One_for_all - Rest_for_one - Simple_one_for_one - Make some example - You can add it dynamically (Example)
  • 7. Console/Attach - You are inside the same VM - It’s not a different process on same DB - You can inspect the behavior of some processes - You can add code - You can Fix the code
  • 9. Advice - Try to use OTP construct - Don’t reinvent the wheel - Processes means concurrency - Use if/when necessary - Inspect a running system - Enjoy with BEAM!!!!