10 Beyond GenServer
This chapter covers
- Tasks
- Agents
- ETS tables
Chapters 8 and 9 introduced the distinction between worker and supervisor processes. Workers are the processes that provide some part of your service, whereas supervisors organize the worker processes into a tree. This allows you to start and stop processes in the desired order as well as to restart critical processes if they fail.
As was mentioned in section 9.1.6, all processes started directly from a supervisor should be OTP-compliant processes. Processes started with plain spawn and spawn_link are not OTP compliant, so you should refrain from running such processes in production. Modules such as Supervisor, GenServer, and Registry allow you to start OTP-compliant processes ...
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