diff --git a/.gitignore b/.gitignore
index 282cabc..a2c10db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 **/.*.swp
 **/.DS_Store
 bin/
-vcpkg/
\ No newline at end of file
+vcpkg/
+/.idea/
diff --git a/README.md b/README.md
index 6185e84..1764cdf 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ TDLight Telegram Bot API is 100% compatible with the official version.
 ### TDLib replaced with TDLight
 [TDLight](https://github.com/tdlight-team/tdlight) provides constant memory usage, unlike tdlib that must be restarted to reduce the heap size.
 
+### Command `optimize_memory`
+Calling `optimize_memory` will remove old data from the in-memory cache and give the freed memory back to the os
 
 -----
 
diff --git a/telegram-bot-api/Client.cpp b/telegram-bot-api/Client.cpp
index 83f88ae..490d9d9 100644
--- a/telegram-bot-api/Client.cpp
+++ b/telegram-bot-api/Client.cpp
@@ -227,6 +227,7 @@ bool Client::init_methods() {
   methods_.emplace("getchatadministrators", &Client::process_get_chat_administrators_query);
   methods_.emplace("getchatmembercount", &Client::process_get_chat_member_count_query);
   methods_.emplace("getchatmemberscount", &Client::process_get_chat_member_count_query);
+  methods_.emplace("optimizememory", &Client::process_optimize_memory_query);
   methods_.emplace("leavechat", &Client::process_leave_chat_query);
   methods_.emplace("promotechatmember", &Client::process_promote_chat_member_query);
   methods_.emplace("setchatadministratorcustomtitle", &Client::process_set_chat_administrator_custom_title_query);
@@ -3782,14 +3783,44 @@ void Client::on_update_authorization_state() {
       send_request(make_object<td_api::setOption>("disable_time_adjustment_protection",
                                                   make_object<td_api::optionValueBoolean>(true)),
                    std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("disable_minithumbnails",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("disable_document_filenames",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("disable_notifications",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("ignore_update_chat_last_message",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("ignore_update_chat_read_inbox",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("ignore_update_user_chat_action",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("ignore_server_deletes_and_reads",
+                                                  make_object<td_api::optionValueBoolean>(true)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("delete_chat_reference_after_seconds",
+                                                  make_object<td_api::optionValueInteger>(3600)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("delete_user_reference_after_seconds",
+                                                  make_object<td_api::optionValueInteger>(3600)),
+                   std::make_unique<TdOnOkCallback>());
+      send_request(make_object<td_api::setOption>("delete_file_reference_after_seconds",
+                                                  make_object<td_api::optionValueInteger>(3600)),
+                   std::make_unique<TdOnOkCallback>());
 
       auto parameters = make_object<td_api::tdlibParameters>();
 
       parameters->use_test_dc_ = is_test_dc_;
       parameters->database_directory_ = dir_;
-      //parameters->use_file_database_ = false;
-      //parameters->use_chat_info_database_ = false;
-      //parameters->use_secret_chats_ = false;
+      parameters->use_file_database_ = false;
+      parameters->use_chat_info_database_ = false;
+      parameters->use_secret_chats_ = false;
       parameters->use_message_database_ = USE_MESSAGE_DATABASE;
       parameters->api_id_ = parameters_->api_id_;
       parameters->api_hash_ = parameters_->api_hash_;
@@ -6872,6 +6903,11 @@ td::Status Client::process_get_chat_member_count_query(PromisedQueryPtr &query)
   return Status::OK();
 }
 
+td::Status Client::process_optimize_memory_query(PromisedQueryPtr &query) {
+  send_request(make_object<td_api::optimizeMemory>(), std::make_unique<TdOnOkQueryCallback>(std::move(query)));
+  return Status::OK();
+}
+
 td::Status Client::process_leave_chat_query(PromisedQueryPtr &query) {
   auto chat_id = query->arg("chat_id");
 
diff --git a/telegram-bot-api/Client.h b/telegram-bot-api/Client.h
index 2abf934..174efca 100644
--- a/telegram-bot-api/Client.h
+++ b/telegram-bot-api/Client.h
@@ -453,6 +453,7 @@ class Client : public WebhookActor::Callback {
   Status process_get_chat_member_query(PromisedQueryPtr &query);
   Status process_get_chat_administrators_query(PromisedQueryPtr &query);
   Status process_get_chat_member_count_query(PromisedQueryPtr &query);
+  Status process_optimize_memory_query(PromisedQueryPtr &query);
   Status process_leave_chat_query(PromisedQueryPtr &query);
   Status process_promote_chat_member_query(PromisedQueryPtr &query);
   Status process_set_chat_administrator_custom_title_query(PromisedQueryPtr &query);