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21 lines
544 B
Elixir
21 lines
544 B
Elixir
defmodule MyApp.ViewCounter do
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alias MyApp.Data
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# cache end points for 5 minutes based on the browser fingerprint
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@spec thread_view_count(String.t, integer) :: {:error, String.t} | {any, boolean}
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def thread_view_count(fingerprint, thread_id) do
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key = "#{fingerprint}:#{thread_id}"
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case Cachex.get(:myapp, key) do
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{:ok, _} -> {:error, "Already viewed."}
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{:missing, _} ->
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{1, nil} = Data.Thread.update_view_count(thread_id)
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Cachex.set(:myapp, key, true, ttl: :timer.minutes(5))
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end
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end
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end
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