0001-add-redis-hostname-publishing.patch

diff --git a/app/workers/activitypub/delivery_worker.rb b/app/workers/activitypub/delivery_worker.rb
index 7c1c14766..51c4ac1d1 100644
--- a/app/workers/activitypub/delivery_worker.rb
+++ b/app/workers/activitypub/delivery_worker.rb
@@ -4,6 +4,7 @@ class ActivityPub::DeliveryWorker
   include Sidekiq::Worker
   include RoutingHelper
   include JsonLdHelper
+  include Redisable
 
   STOPLIGHT_FAILURE_THRESHOLD = 10
   STOPLIGHT_COOLDOWN = 60
@@ -32,6 +33,8 @@ class ActivityPub::DeliveryWorker
     @host           = Addressable::URI.parse(inbox_url).normalized_site
     @performed      = false
 
+    redis.publish('activitypub-outbound-hosts', Addressable::URI.parse(inbox_url).host)
+
     perform_request
   ensure
     if @inbox_url.present?
diff --git a/app/workers/activitypub/processing_worker.rb b/app/workers/activitypub/processing_worker.rb
index 1bb94b7f2..735154be8 100644
--- a/app/workers/activitypub/processing_worker.rb
+++ b/app/workers/activitypub/processing_worker.rb
@@ -2,6 +2,7 @@
 
 class ActivityPub::ProcessingWorker
   include Sidekiq::Worker
+  include Redisable
 
   sidekiq_options queue: 'ingress', backtrace: true, retry: 8
 
@@ -13,6 +14,8 @@ class ActivityPub::ProcessingWorker
 
     return if actor.nil?
 
+    redis.publish('activitypub-inbound-hosts', actor.domain)
+
     ActivityPub::ProcessCollectionService.new.call(body, actor, override_timestamps: true, delivered_to_account_id: delivered_to_account_id, delivery: true)
   rescue ActiveRecord::RecordInvalid => e
     Rails.logger.debug { "Error processing incoming ActivityPub object: #{e}" }