ConcurrencyLimiter

A simple resource pool that limits concurrency up to a number. Processes can wait in queue with a timeout.

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Example usage:

{:ok, pid} = ConcurrencyLimiter.start_link(max_concurrency: 5)

ConcurrencyLimiter.run!(pid, 5000, fn ->
  # Do some work
end)

With a name:

ConcurrencyLimiter.start_link(name: MyLimiter, max_concurrency: 5)

ConcurrencyLimiter.run!(MyLimiter, 5000, fn ->
  # Do some work
end)

Or with a supervisor:

Supervisor.start_link([
  {ConcurrencyLimiter, name: LimiterA, max_concurrency: 5},
  {ConcurrencyLimiter, name: LimiterB, max_concurrency: 10},
  {ConcurrencyLimiter, name: LimiterC, max_concurrency: 50}
], strategy: :one_for_one)

ConcurrencyLimiter.run!(LimiterB, 5000, fn ->
  # Do some work
end)

Installation

The package can be installed by adding concurrency_limiter to your list of dependencies in mix.exs:

def deps do
  [
    {:concurrency_limiter, "~> 1.0"}
  ]
end

Documentation can be found at https://hexdocs.pm/concurrency_limiter.