Claudio Ortolina
7cf9b4e7f8
- spec public functions (skipping controllers, views, live views and components) - use types instead of explanations in docs - remove redundant docs - fix typos
43 lines
1.2 KiB
Elixir
43 lines
1.2 KiB
Elixir
defmodule MusicLibrary.Assets.Cache do
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@spec new() :: :ets.table()
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def new do
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:ets.new(__MODULE__, [:named_table, :public, :compressed, read_concurrency: true])
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end
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@spec set(String.t(), String.t(), binary()) :: true
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def set(payload, format, content) do
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inserted_at = DateTime.utc_now() |> DateTime.to_unix()
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:ets.insert(__MODULE__, {{payload, format}, inserted_at, content})
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end
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@spec get(String.t(), String.t()) :: {:found, binary()} | :not_found
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def get(payload, format) do
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case :ets.lookup(__MODULE__, {payload, format}) do
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[{{^payload, ^format}, _inserted_at, content}] -> {:found, content}
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[] -> :not_found
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end
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end
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@spec total_content_size() :: non_neg_integer()
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def total_content_size do
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:ets.foldl(
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fn {_key, _inserted_at, content}, acc -> acc + byte_size(content) end,
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0,
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__MODULE__
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)
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end
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@spec prune(non_neg_integer()) :: non_neg_integer()
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def prune(older_than_seconds) do
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threshold =
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DateTime.utc_now()
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|> DateTime.add(older_than_seconds * -1, :second)
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|> DateTime.to_unix()
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:ets.select_delete(
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__MODULE__,
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[{{:"$1", :"$2", :"$3"}, [{:<, :"$2", threshold}], [true]}]
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)
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end
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end
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