Add Activity Pub endpoints cache

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon/actors/actor.ex

@@ -377,4 +377,8 @@ defmodule Mobilizon.Actors.Actor do
       name -> name
     end
   end
+
+  def clear_cache(%Actor{preferred_username: preferred_username, domain: nil}) do
+    Cachex.del(:activity_pub, "actor_" <> preferred_username)
+  end
 end

lib/mobilizon/application.ex

@@ -37,12 +37,17 @@ defmodule Mobilizon.Application do
       worker(
         Cachex,
         [
-          :json,
+          :activity_pub,
           [
-            limit: 2500
+            limit: 2500,
+            expiration:
+              expiration(
+                default: :timer.minutes(3),
+                interval: :timer.seconds(15)
+              )
           ]
         ],
-        id: :cache_actor
+        id: :cache_activity_pub
       ),
       worker(Guardian.DB.Token.SweeperServer, []),
       worker(Mobilizon.Service.Federator, [])