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# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.NullCache do
@moduledoc """
A module simulating a permanently empty cache.
"""
@behaviour Pleroma.Caching
@impl true
def get!(_, _), do: nil
@impl true
def put(_, _, _, _ \\ nil), do: {:ok, true}
@impl true
def stream!(_, _), do: []
@impl true
def get(_, _), do: {:ok, nil}
@impl true
def fetch!(_, key, func) do
case func.(key) do
{_, res} -> res
res -> res
end
end
@impl true
def get_and_update(_, _, func) do
func.(nil)
end
@impl true
def expire_at(_, _, _), do: {:ok, true}
@impl true
def exists?(_, _), do: {:ok, false}
@impl true
def execute!(_, func) do
func.(:nothing)
end
@impl true
def del(_, _), do: {:ok, true}
end
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