diff --git a/.idea/.gitignore b/.idea/.gitignore
deleted file mode 100644
index 73f69e0..0000000
--- a/.idea/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml
-# Editor-based HTTP Client requests
-/httpRequests/
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
deleted file mode 100644
index d25344e..0000000
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ /dev/null
@@ -1,20 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0">
-    <option name="myName" value="Project Default" />
-    <inspection_tool class="DuplicatedCode" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
-    <inspection_tool class="PyPackageRequirementsInspection" enabled="true" level="WARNING" enabled_by_default="true">
-      <option name="ignoredPackages">
-        <value>
-          <list size="1">
-            <item index="0" class="java.lang.String" itemvalue="nacl" />
-          </list>
-        </value>
-      </option>
-    </inspection_tool>
-    <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
-      <option name="processCode" value="true" />
-      <option name="processLiterals" value="true" />
-      <option name="processComments" value="true" />
-    </inspection_tool>
-  </profile>
-</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index 21c84a0..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (ptvp35)" project-jdk-type="Python SDK" />
-</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index 20fe4ca..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/ptvp35.iml" filepath="$PROJECT_DIR$/.idea/ptvp35.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/.idea/ptvp35.iml b/.idea/ptvp35.iml
deleted file mode 100644
index 74d515a..0000000
--- a/.idea/ptvp35.iml
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$">
-      <excludeFolder url="file://$MODULE_DIR$/venv" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index 94a25f7..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/ptvp35/__init__.py b/ptvp35/__init__.py
index 01ee527..364b6e2 100644
--- a/ptvp35/__init__.py
+++ b/ptvp35/__init__.py
@@ -1,4 +1,5 @@
 import asyncio
+import concurrent.futures
 import json
 import pathlib
 import pickle
@@ -101,6 +102,7 @@ class TransactionRequest(Request):
 class DbConnection:
     __mmdb: dict
     __loop: asyncio.AbstractEventLoop
+    __pool: concurrent.futures.Executor
     __queue: asyncio.Queue[Request]
     __file: IO[str]
     __buffer: StringIO
@@ -179,7 +181,7 @@ class DbConnection:
 
     async def _dump_compressed_buffer(self):
         buffer = self._compress_buffer()
-        await self.__loop.run_in_executor(None, self.__file.write, buffer.getvalue())
+        await self.__loop.run_in_executor(self.__pool, self.__file.write, buffer.getvalue())
 
     async def _do_dump_buffer(self):
         await self._dump_compressed_buffer()
@@ -196,7 +198,7 @@ class DbConnection:
 
     async def _save_error(self, line: str):
         with open(self.__path_error, 'a') as file:
-            await self.__loop.run_in_executor(None, file.write, line.strip() + '\n')
+            await self.__loop.run_in_executor(self.__pool, file.write, line.strip() + '\n')
 
     async def _handle_request(self, request: Request):
         if isinstance(request, self.factory.kvrequest_type):
@@ -225,13 +227,13 @@ class DbConnection:
             await self._background_cycle()
 
     async def _finish_recovery(self):
-        await self.__loop.run_in_executor(None, shutil.copy, self.__path_backup, self.__path)
+        await self.__loop.run_in_executor(self.__pool, shutil.copy, self.__path_backup, self.__path)
         self.__path_recover.unlink()
         self.__path_backup.unlink()
 
     async def _build_file(self, db: dict):
         with open(self.__path_backup, "w") as file:
-            self.__initial_size = await self.__loop.run_in_executor(None, self.db2io, db, file)
+            self.__initial_size = await self.__loop.run_in_executor(self.__pool, self.db2io, db, file)
         self.__path_recover.touch()
         await self._finish_recovery()
 
@@ -240,7 +242,7 @@ class DbConnection:
             await self._finish_recovery()
         self.__path.touch()
         with open(self.__path) as file:
-            await self.__loop.run_in_executor(None, self.io2db, file, db)
+            await self.__loop.run_in_executor(self.__pool, self.io2db, file, db)
         await self._build_file(db)
 
     async def _reload(self):
@@ -266,6 +268,7 @@ class DbConnection:
     async def _initialize(self):
         assert self.not_running
         self.__loop = asyncio.get_event_loop()
+        self.__pool = concurrent.futures.ThreadPoolExecutor()
         await self._initialize_queue()
         await self._initialize_mmdb()
         await self._start_task()
@@ -285,8 +288,10 @@ class DbConnection:
         self.__file.close()
         await self._build_file(self.__mmdb)
         self.not_running = True
+        self.__pool.shutdown()
         del self.__mmdb
         del self.__loop
+        del self.__pool
         del self.__queue
         del self.__file
         del self.__buffer
diff --git a/setup.py b/setup.py
index 2b1a7c0..863c09c 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ setup(
     packages=['ptvp35'],
     url='https://gitea.ongoteam.net/PTV/ptvp35',
     license='',
-    author='PARRRATE T&V',
+    author='PARRRATE TNV',
     author_email='',
     description=''
 )