1 files changed, 24 insertions, 0 deletions
diff --git a/app/workers/clear_database_cache_worker.rb b/app/workers/clear_database_cache_worker.rb
new file mode 100644
index 00000000000..c4cb4733482
--- /dev/null
+++ b/app/workers/clear_database_cache_worker.rb
@@ -0,0 +1,24 @@
+# This worker clears all cache fields in the database, working in batches.
+class ClearDatabaseCacheWorker
+  include Sidekiq::Worker
+  include DedicatedSidekiqQueue
+
+  BATCH_SIZE = 1000
+
+  def perform
+    CacheMarkdownField.caching_classes.each do |kls|
+      fields = kls.cached_markdown_fields.html_fields
+      clear_cache_fields = fields.each_with_object({}) do |field, memo|
+        memo[field] = nil
+      end
+
+      Rails.logger.debug("Clearing Markdown cache for #{kls}: #{fields.inspect}")
+
+      kls.unscoped.in_batches(of: BATCH_SIZE) do |relation|
+        relation.update_all(clear_cache_fields)
+      end
+    end
+
+    nil
+  end
+end