A caller-owned supervisor for a pool of isolated compiler workers.

Letterpress does not start this supervisor automatically. Add it to the host application's supervision tree on nodes that perform authoring work. Nodes that only render stored artifacts do not need a compiler pool or Node.

Each pool has a registered :pool name. Pass that name as :compiler_pool to the functions in Letterpress when using a non-default pool.

Example

children = [
  {Letterpress.Compiler.Supervisor,
   pool: MyApp.LetterpressCompiler,
   pool_size: 2,
   max_frame_bytes: 2_000_000}
]

Supervisor.start_link(children, strategy: :one_for_one)

A protocol failure restarts only the affected worker. Calls already queued on that worker receive an explicit error.