diff --git a/src/backend/database.py b/src/backend/database.py
index c8c7ccd..83f7a51 100644
--- a/src/backend/database.py
+++ b/src/backend/database.py
@@ -5,7 +5,7 @@ from pathlib import Path
 from src import settings
 from typing import Any, List, Optional, Tuple, Union
 import datetime
-from src import logger
+
 from src.backend.db import (
     CREATE_ELSA_FILES_TABLE,
     CREATE_ELSA_MEDIA_TABLE,
@@ -25,6 +25,20 @@ from src.logic.constants import SEMAP_MEDIA_ACCOUNTS
 from src.utils import create_blob, dump_pickle, load_pickle
 from .semester import Semester
 from string import ascii_lowercase as lower, digits, punctuation
+import sys
+from loguru import logger as log
+
+logger = log
+logger.remove()
+logger.add("logs/database.log", rotation="1 week", enqueue=True)
+log.add(
+    "logs/application.log",
+    rotation="1 day",
+    compression="zip",
+)
+
+# logger.add(sys.stderr, format="{time} {level} {message}", level="INFO")
+logger.add(sys.stdout)
 
 
 ascii_lowercase = lower + digits + punctuation
@@ -204,6 +218,7 @@ class Database:
             app_id (str): The apparat id where the book should be added to
             prof_id (str): The id of the professor where the book should be added to.
         """
+        logger.info(f"Adding book {bookdata.signature} to database")
         if app_id is None or prof_id is None:
             raise ValueError("Apparate ID or Prof ID is None")
         conn = self.connect()
@@ -387,7 +402,7 @@ class Database:
 
     def getBooks(
         self, app_id: Union[str, int], prof_id: Union[str, int], deleted=0
-    ) -> list[dict[int, BookData, int]]:
+    ) -> list[dict[str, Union[BookData, int]]]:
         """
         Get the Books based on the apparat id and the professor id
 
@@ -406,14 +421,14 @@ class Database:
         if qdata is None:
             return []
         for result_a in qdata:
-            data = {"id": int, "bookdata": BookData, "available": int}
+            data: dict[str, Any] = {"id": int, "bookdata": BookData, "available": int}
             data["id"] = result_a[0]
             data["bookdata"] = load_pickle(result_a[1])
             data["available"] = result_a[2]
             ret_result.append(data)
         return ret_result
 
-    def updateBookdata(self, book_id, bookdata: BookData):
+    def updateBookdata(self, book_id: int, bookdata: BookData):
         """
         Update the bookdata in the database
 
@@ -1183,7 +1198,7 @@ class Database:
             "UPDATE user SET password=? WHERE username=?", (new_password, user)
         )
 
-    def getRole(self, user):
+    def getRole(self, user: str) -> str:
         """get the role of the user
 
         Args:
@@ -1510,7 +1525,7 @@ class Database:
         else:
             return []
 
-    def getProfId(self, profdata: dict | Prof):
+    def getProfId(self, profdata: dict[str, Any] | Prof):
         """Get the prof ID based on the profdata
 
         Args: