IndexingScheduler: fetch and import in batches (#24285)

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

app/workers/scheduler/indexing_scheduler.rb

@@ -3,28 +3,26 @@
 class Scheduler::IndexingScheduler
   include Sidekiq::Worker
   include Redisable
-  include DatabaseHelper
 
-  sidekiq_options retry: 0, lock: :until_executed, lock_ttl: 30.minutes.to_i
-
-  IMPORT_BATCH_SIZE = 1000
-  SCAN_BATCH_SIZE = 10 * IMPORT_BATCH_SIZE
+  sidekiq_options retry: 0
 
   def perform
     return unless Chewy.enabled?
 
     indexes.each do |type|
       with_redis do |redis|
-        redis.sscan_each("chewy:queue:#{type.name}", count: SCAN_BATCH_SIZE).each_slice(IMPORT_BATCH_SIZE) do |ids|
-          type.import!(ids)
+        ids = redis.smembers("chewy:queue:#{type.name}")
 
-          redis.srem("chewy:queue:#{type.name}", ids)
+        type.import!(ids)
+
+        redis.pipelined do |pipeline|
+          ids.each { |id| pipeline.srem("chewy:queue:#{type.name}", id) }
         end
       end
     end
   end
 
   def indexes
-    [AccountsIndex, TagsIndex, PublicStatusesIndex, StatusesIndex]
+    [AccountsIndex, TagsIndex, StatusesIndex]
   end
 end