From 8683bf75fa5f720fe3494bf60949e17aa4a75725 Mon Sep 17 00:00:00 2001
From: DualFroz <me@dualfroz.com>
Date: Mon, 24 Aug 2026 15:50:00 +0200
Subject: [PATCH] feat(expiry): add ttl sweep process

---
 lib/excache/expiry.ex | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 lib/excache/expiry.ex

diff --git a/lib/excache/expiry.ex b/lib/excache/expiry.ex
new file mode 100644
index 0000000..214774c
--- /dev/null
+++ b/lib/excache/expiry.ex
@@ -0,0 +1,23 @@
+defmodule Excache.Expiry do
+  @moduledoc false
+
+  use GenServer
+
+  def start_link(_arg), do: GenServer.start_link(__MODULE__, nil, name: __MODULE__)
+
+  @impl true
+  def init(_arg) do
+    interval = Application.get_env(:excache, :sweep_interval, 1000)
+    schedule(interval)
+    {:ok, interval}
+  end
+
+  @impl true
+  def handle_info(:sweep, interval) do
+    Excache.Store.sweep() |> Enum.each(&Excache.Notify.expired/1)
+    schedule(interval)
+    {:noreply, interval}
+  end
+
+  defp schedule(interval), do: Process.send_after(self(), :sweep, interval)
+end