Caching: Add caching behavior, add null implementation.
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Caching do
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@callback get!(Cachex.cache(), any()) :: any()
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@callback get(Cachex.cache(), any()) :: {atom(), any()}
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@callback put(Cachex.cache(), any(), any(), Keyword.t()) :: {Cachex.status(), boolean()}
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@callback put(Cachex.cache(), any(), any()) :: {Cachex.status(), boolean()}
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@callback fetch!(Cachex.cache(), any(), function() | nil) :: any()
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# @callback del(Cachex.cache(), any(), Keyword.t()) :: {Cachex.status(), boolean()}
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@callback del(Cachex.cache(), any()) :: {Cachex.status(), boolean()}
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@callback stream!(Cachex.cache(), any()) :: Enumerable.t()
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@callback expire_at(Cachex.cache(), binary(), number()) :: {Cachex.status(), boolean()}
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@callback exists?(Cachex.cache(), any()) :: {Cachex.status(), boolean()}
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@callback execute!(Cachex.cache(), function()) :: any()
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@callback get_and_update(Cachex.cache(), any(), function()) ::
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{:commit | :ignore, any()}
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end
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@ -21,9 +21,11 @@ def stream!(_, _), do: []
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def get(_, _), do: {:ok, nil}
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@impl true
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def fetch!(_, _, func) do
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{_, res} = func.()
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res
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def fetch!(_, key, func) do
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case func.(key) do
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{_, res} -> res
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res -> res
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end
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end
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@impl true
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