diff --git a/day_2/tn_rails_concurrent/Gemfile b/day_2/tn_rails_concurrent/Gemfile
index b6d6d35..07453d2 100644
--- a/day_2/tn_rails_concurrent/Gemfile
+++ b/day_2/tn_rails_concurrent/Gemfile
@@ -23,6 +23,7 @@ group :development do
 end
 
 gem "parallel", "~> 1.26.3"
+gem "async"
 gem "sidekiq", "~> 7.3.6"
 
 gem "activerecord-import", "~> 2.0"
diff --git a/day_2/tn_rails_concurrent/Gemfile.lock b/day_2/tn_rails_concurrent/Gemfile.lock
index 1d38d4b..a7cff76 100644
--- a/day_2/tn_rails_concurrent/Gemfile.lock
+++ b/day_2/tn_rails_concurrent/Gemfile.lock
@@ -83,6 +83,10 @@ GEM
     annotate (3.2.0)
       activerecord (>= 3.2, < 8.0)
       rake (>= 10.4, < 14.0)
+    async (2.21.1)
+      console (~> 1.29)
+      fiber-annotation
+      io-event (~> 1.6, >= 1.6.5)
     base64 (0.2.0)
     benchmark (0.4.0)
     bigdecimal (3.1.8)
@@ -92,6 +96,10 @@ GEM
     builder (3.3.0)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
+    console (1.29.2)
+      fiber-annotation
+      fiber-local (~> 1.1)
+      json
     crass (1.0.6)
     date (3.4.1)
     debug (1.9.2)
@@ -99,6 +107,10 @@ GEM
       reline (>= 0.3.8)
     drb (2.2.1)
     erubi (1.13.0)
+    fiber-annotation (0.2.0)
+    fiber-local (1.1.0)
+      fiber-storage
+    fiber-storage (1.0.0)
     globalid (1.2.1)
       activesupport (>= 6.1)
     i18n (1.14.6)
@@ -108,9 +120,11 @@ GEM
       activesupport (>= 6.0.0)
       railties (>= 6.0.0)
     io-console (0.8.0)
+    io-event (1.7.5)
     irb (1.14.2)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
+    json (2.9.1)
     logger (1.6.3)
     loofah (2.23.1)
       crass (~> 1.0.2)
@@ -235,6 +249,7 @@ PLATFORMS
 DEPENDENCIES
   activerecord-import (~> 2.0)
   annotate
+  async
   bootsnap
   debug
   importmap-rails
diff --git a/day_2/tn_rails_concurrent/lib/tasks/task_to_be_optimized.rake b/day_2/tn_rails_concurrent/lib/tasks/task_to_be_optimized.rake
index cefe94c..1cd9a01 100644
--- a/day_2/tn_rails_concurrent/lib/tasks/task_to_be_optimized.rake
+++ b/day_2/tn_rails_concurrent/lib/tasks/task_to_be_optimized.rake
@@ -9,13 +9,17 @@ namespace :orders do
 
     Order.destroy_all
     # Оптимизировать тут
-    Array.new(200) { Order.create!(product_id: rand(1..100), quantity: rand(1..10), current_status: :pending) }
+    Parallel.map(Array.new(200)) do
+      { product_id: rand(1..100), quantity: rand(1..10), current_status: :pending }
+    end.tap { Order.insert_all(_1) }
 
     time = Benchmark.realtime do
       puts Order.pending.count
       # Оптимизировать тут
-      Order.pending.find_in_batches(batch_size: 50) do |batch|
-        process_batch_with_http(batch)
+      Async do
+        Order.pending.find_in_batches(batch_size: 50) do |batch|
+          Async { process_batch_with_http(batch) }
+        end
       end
     end
 
@@ -24,16 +28,18 @@ namespace :orders do
 
   def process_batch_with_http(batch)
     batch.each do |order|
-      # Оптимизировать тут
-      response = send_to_external_service
-      if response.code.to_i == 200
-        order.process!
-        puts "Successfully processed Order ##{order.id}"
-      else
-        raise "Failed to process Order ##{order.id}: #{response.body}"
+      Async do
+        # Оптимизировать тут
+        response = send_to_external_service
+        if response.code.to_i == 200
+          order.process!
+          puts "Successfully processed Order ##{order.id}"
+        else
+          raise "Failed to process Order ##{order.id}: #{response.body}"
+        end
+      rescue StandardError => e
+        Rails.logger.error("Error processing Order ##{order.id}: #{e.message}")
       end
-    rescue StandardError => e
-      Rails.logger.error("Error processing Order ##{order.id}: #{e.message}")
     end
   end
 
@@ -47,3 +53,8 @@ namespace :orders do
     http.request(request)
   end
 end
+
+# Processed orders in 20.1 seconds with HTTP request (перед оптимизацией)
+# Processed orders in 0.11 seconds with HTTP request (async при io bound)
+# Processed orders in 0.2 seconds with HTTP request (thread при io bound)
+# Processed orders in 0.24 seconds with HTTP request (parallel (для параллельного запуска обработки каждого заказа в батче) + async (для обработки каждого заказа) при io bound)