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24 lines
658 B
Elixir
24 lines
658 B
Elixir
defmodule MyApp.RateLimiter do
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# map keys to integers to save memory
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def new_reply_key, do: 1
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def new_thread_key, do: 2
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@spec set_limit(String.t, integer, integer) :: {:ok, String.t}
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def set_limit(end_point, user_id, seconds) do
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key = "rl#{end_point}:#{user_id}"
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Cachex.set(:myapp, key, true, ttl: :timer.seconds(seconds))
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{:ok, "ok"}
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end
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@spec check_limit(String.t, integer) :: {:ok, String.t} | {:error, String.t}
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def check_limit(end_point, user_id) do
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key = "rl#{end_point}:#{user_id}"
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case Cachex.get(:myapp, key) do
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{:ok, _} -> {:error, "limit reached"}
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{:missing, _} -> {:ok, "ok"}
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end
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end
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end
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