diff --git a/alembic.ini b/alembic.ini
index 4f70ed2..44c9a46 100644
--- a/alembic.ini
+++ b/alembic.ini
@@ -60,7 +60,7 @@ version_path_separator = os  # Use os.pathsep. Default configuration used for ne
 # are written from script.py.mako
 # output_encoding = utf-8
 
-sqlalchemy.url = postgresql://demo_user:user_pass@db:5432/serviceman_db
+sqlalchemy.url = postgresql://demo_user:user_pass@localhost:5432/serviceman_db
 
 
 [post_write_hooks]
diff --git a/api/app.py b/api/app.py
index d4e055d..574f82b 100644
--- a/api/app.py
+++ b/api/app.py
@@ -1,6 +1,6 @@
 from fastapi import FastAPI
 
-from api.router.user import router as user_router
+from api.routers.user import router as user_router
 
 
 def create_app() -> FastAPI:
diff --git a/api/config.py b/api/config.py
index a1c457d..c987da5 100644
--- a/api/config.py
+++ b/api/config.py
@@ -3,7 +3,7 @@ import os
 import yaml  # type: ignore
 from pydantic_settings import BaseSettings
 
-with open(os.getenv("CONFIG_PATH", "")) as f:
+with open(os.getenv("CONFIG_PATH", "./config/api_config.yml")) as f:
     config_data: dict = yaml.safe_load(f)
 
 if os.getenv("INDOCKER"):
diff --git a/api/di.py b/api/di.py
index 4beeb59..d461934 100644
--- a/api/di.py
+++ b/api/di.py
@@ -1,12 +1,13 @@
-from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+from sqlalchemy.ext.asyncio import (AsyncSession, async_sessionmaker,
+                                    create_async_engine)
 
 from api.config import get_settings
-from api.service.user import UserService
+from api.services.user import UserService
 from api.uow.uow_base import UnitOfWork
 
 async_engine = create_async_engine(
     url=get_settings().get_db_url,
-    echo=True,
+    echo=False,
 )
 
 async_session_factory = async_sessionmaker(
diff --git a/api/models/__init__.py b/api/models/__init__.py
index 71ab449..9d19859 100644
--- a/api/models/__init__.py
+++ b/api/models/__init__.py
@@ -1,7 +1,7 @@
-from .base import Base
-from .user import User
+from .base_model import Base
+from .user_model import UserModel
 
 __all__ = (
     "Base",
-    "User",
+    "UserModel",
 )
diff --git a/api/models/base.py b/api/models/base_model.py
similarity index 92%
rename from api/models/base.py
rename to api/models/base_model.py
index 75f6318..203f0b5 100644
--- a/api/models/base.py
+++ b/api/models/base_model.py
@@ -5,6 +5,8 @@ from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
 
 
 class Base(DeclarativeBase):
+    __abstract__ = True
+
     id: Mapped[uuid.UUID] = mapped_column(
         UUID(as_uuid=True),
         primary_key=True,
diff --git a/api/models/user.py b/api/models/user_model.py
similarity index 77%
rename from api/models/user.py
rename to api/models/user_model.py
index b9bc7bb..e6960bd 100644
--- a/api/models/user.py
+++ b/api/models/user_model.py
@@ -1,12 +1,12 @@
 from sqlalchemy import Boolean, Column, String
 from sqlalchemy.orm import Mapped
 
-from api.schemas.user_schema import UserSchema
+from api.schemas import UserReadDTO
 
-from .base import Base
+from . import Base
 
 
-class User(Base):
+class UserModel(Base):
     __tablename__ = "users"
 
     name: Mapped[str]
@@ -22,8 +22,8 @@ class User(Base):
             f"is_active={self.is_active})>"
         )
 
-    def to_read_model(self) -> UserSchema:
-        return UserSchema(
+    def to_read_model(self) -> UserReadDTO:
+        return UserReadDTO(
             id=self.id,
             name=self.name,
         )
diff --git a/api/repositories/__init__.py b/api/repositories/__init__.py
new file mode 100644
index 0000000..bf53d8f
--- /dev/null
+++ b/api/repositories/__init__.py
@@ -0,0 +1,7 @@
+from .repository import AbstractRepository
+from .user import UserRepository
+
+__all__ = (
+    "AbstractRepository",
+    "UserRepository",
+)
diff --git a/api/repositories/repository.py b/api/repositories/repository.py
new file mode 100644
index 0000000..ff7060e
--- /dev/null
+++ b/api/repositories/repository.py
@@ -0,0 +1,23 @@
+from abc import ABC, abstractmethod
+
+
+class AbstractRepository(ABC):
+    @abstractmethod
+    async def add_one(self, data: dict):
+        raise NotImplementedError()
+
+    @abstractmethod
+    async def find_all(self):
+        raise NotImplementedError()
+
+    @abstractmethod
+    async def find_one(self, filter: dict):
+        raise NotImplementedError()
+
+    @abstractmethod
+    async def update_one(self, filter: dict, data: dict):
+        raise NotImplementedError()
+
+    @abstractmethod
+    async def delete_one(self, filter: dict):
+        raise NotImplementedError()
diff --git a/api/repositories/user.py b/api/repositories/user.py
new file mode 100644
index 0000000..bb0d618
--- /dev/null
+++ b/api/repositories/user.py
@@ -0,0 +1,30 @@
+from sqlalchemy import insert, select
+from sqlalchemy.ext.asyncio.session import AsyncSession
+
+from api.models import UserModel
+from api.repositories import AbstractRepository
+
+
+class UserRepository(AbstractRepository):
+    def __init__(self, session: AsyncSession):
+        self.session = session
+
+    async def add_one(self, data: dict):
+        stmt = insert(UserModel).values(**data)
+        res = await self.session.execute(stmt)
+        return res.scalar_one()
+
+    async def find_all(self):
+        stmt = select(UserModel)
+        res = await self.session.execute(stmt)
+        res = [row[0].to_read_model() for row in res.all()]
+        return res
+
+    async def find_one(self, filter: dict):
+        return
+
+    async def update_one(self, filter: dict, data: dict):
+        return
+
+    async def delete_one(self, filter: dict):
+        return
diff --git a/api/repository/user.py b/api/repository/user.py
deleted file mode 100644
index 30e23ae..0000000
--- a/api/repository/user.py
+++ /dev/null
@@ -1,6 +0,0 @@
-import api.models as models
-from api.uow.repository import SQLAlchemyRepository
-
-
-class UserRepository(SQLAlchemyRepository):
-    model = models.User
diff --git a/api/router/__init__.py b/api/router/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/api/repository/__init__.py b/api/routers/__init__.py
similarity index 100%
rename from api/repository/__init__.py
rename to api/routers/__init__.py
diff --git a/api/router/user.py b/api/routers/user.py
similarity index 64%
rename from api/router/user.py
rename to api/routers/user.py
index 311cda8..00c923a 100644
--- a/api/router/user.py
+++ b/api/routers/user.py
@@ -1,16 +1,16 @@
 from fastapi import APIRouter, Depends
 
 from api.di import get_user_service
-from api.schemas.user_schema import UserSchema
-from api.service.user import UserService
+from api.schemas import UserReadDTO
+from api.services import UserService
 
 router = APIRouter()
 
 
-@router.get("/users", response_model=list[UserSchema])
+@router.get("/users", response_model=list[UserReadDTO])
 async def get_user_list(
     user_service: UserService = Depends(get_user_service),
-) -> list[UserSchema]:
+) -> list[UserReadDTO]:
     return await user_service.get_all_users()
 
 
diff --git a/api/schemas/__init__.py b/api/schemas/__init__.py
new file mode 100644
index 0000000..678507a
--- /dev/null
+++ b/api/schemas/__init__.py
@@ -0,0 +1,9 @@
+from .base_schema import ReadDTO, WriteDTO
+from .user_schema import UserReadDTO, UserWriteDTO
+
+__all__ = (
+    "WriteDTO",
+    "ReadDTO",
+    "UserWriteDTO",
+    "UserReadDTO",
+)
diff --git a/api/schemas/base_schema.py b/api/schemas/base_schema.py
new file mode 100644
index 0000000..6faffa3
--- /dev/null
+++ b/api/schemas/base_schema.py
@@ -0,0 +1,13 @@
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+class WriteDTO(BaseModel):
+
+    class Config:
+        from_attributes = True
+
+
+class ReadDTO(WriteDTO):
+    id: UUID
diff --git a/api/schemas/user_schema.py b/api/schemas/user_schema.py
index 1b2870e..b59324b 100644
--- a/api/schemas/user_schema.py
+++ b/api/schemas/user_schema.py
@@ -1,11 +1,9 @@
-from uuid import UUID
-
-from pydantic import BaseModel
+from . import ReadDTO, WriteDTO
 
 
-class UserSchema(BaseModel):
-    id: UUID
+class UserWriteDTO(WriteDTO):
     name: str
 
-    class Config:
-        from_attributes = True
+
+class UserReadDTO(ReadDTO, UserWriteDTO):
+    pass
diff --git a/api/service/__init__.py b/api/service/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/api/services/__init__.py b/api/services/__init__.py
new file mode 100644
index 0000000..b30026f
--- /dev/null
+++ b/api/services/__init__.py
@@ -0,0 +1,3 @@
+from .user import UserService
+
+__all__ = ("UserService",)
diff --git a/api/service/user.py b/api/services/user.py
similarity index 100%
rename from api/service/user.py
rename to api/services/user.py
diff --git a/api/uow/repository.py b/api/uow/repository.py
deleted file mode 100644
index d0025dc..0000000
--- a/api/uow/repository.py
+++ /dev/null
@@ -1,26 +0,0 @@
-from typing import Generic, TypeVar
-
-from sqlalchemy import insert, select
-from sqlalchemy.ext.asyncio import AsyncSession
-
-import api.models as models
-
-ModelType = TypeVar("ModelType", bound=models.Base)
-
-
-class SQLAlchemyRepository(Generic[ModelType]):
-    model: type[ModelType]
-
-    def __init__(self, session: AsyncSession):
-        self.session = session
-
-    async def add_one(self, data: dict) -> ModelType:
-        stmt = insert(self.model).values(**data)
-        res = await self.session.execute(stmt)
-        return res.scalar_one()
-
-    async def find_all(self) -> list[ModelType]:
-        stmt = select(self.model)
-        res = await self.session.execute(stmt)
-        res = [row[0].to_read_model() for row in res.all()]
-        return res
diff --git a/api/uow/uow_base.py b/api/uow/uow_base.py
index fafe3e2..1f46aca 100644
--- a/api/uow/uow_base.py
+++ b/api/uow/uow_base.py
@@ -1,4 +1,4 @@
-from api.repository.user import UserRepository
+from api.repositories import UserRepository
 
 
 class UnitOfWork:
@@ -9,6 +9,8 @@ class UnitOfWork:
         self.session = self.session_factory()
 
         self.users = UserRepository(self.session)
+        print("session id:", id(self.session))
+        print("UoW obj id:", id(self))
 
     async def __aexit__(self, *args):
         await self.session.rollback()