replace shelve with redis

app.py

@@ -1,7 +1,7 @@
 import locale
-
+import redis
 from flask import Flask, render_template, request, redirect
-
+from flask_caching import Cache
 from forms.SearchForm import SearchForm
 from arztapi.APIHandler import APIHandler
 
@@ -9,6 +9,14 @@ app = Flask(__name__)
 app.config.from_prefixed_env()
 app.secret_key = app.config["THERAPY_SECRET"]
 locale.setlocale(locale.LC_ALL, 'de_DE.UTF-8')
+app.config["CACHE_TYPE"] = "redis"
+app.config["CACHE_REDIS_HOST"] = "localhost"
+app.config["CACHE_REDIS_PORT"] = 6379
+app.config["CACHE_REDIS_DB"] = 0
+
+cache = Cache(app=app)
+cache.init_app(app)
+redis_client = redis.Redis(host='localhost', port=6379, db=0)
 
 
 @app.route('/')

arztapi/APIHandler.py

@@ -1,10 +1,12 @@
+import json
 from typing import List
 
 import requests
 from requests import JSONDecodeError
 import base64
-import shelve
 from datetime import datetime, timedelta
+
+from app import redis_client
 from arztapi.ArztPraxisDatas import ArztPraxisDatas
 from arztapi.DoctorInformation import DoctorInformation, PhoneTime
 from arztapi.DoctorPhoneTime import DoctorPhoneTime
@@ -23,7 +25,6 @@ class APIHandler:
         self.phone_times = []
         self.general_information = []
         self.processed_doctor_phone_times = []
-        self._cache = shelve.open("_therapydb.cache")
 
     def get_lat_lon_location_list(self, location):
         """
@@ -160,8 +161,9 @@ class APIHandler:
         return self.phone_times
 
     def get_current_doctor_information_data_in_cache_with_time_check(self, amount_of_days):
-        cached_data = self._cache.get(str(self.json_data))
+        cached_data = redis_client.get(str(self.json_data))
         if cached_data:
+            cached_data = json.loads(cached_data)
             cache_timestamp = cached_data["timestamp"]
             current_date = datetime.now()
             time_difference = current_date - cache_timestamp
@@ -170,7 +172,7 @@ class APIHandler:
 
     def set_current_doctor_information_data_in_cache(self):
         current_date = datetime.now()
-        self._cache[str(self.json_data)] = {"timestamp": current_date, "data": self.phone_times}
+        redis_client.set(str(self.json_data), json.dumps({"timestamp": current_date, "data": self.phone_times}))
 
     def filter_for_therapy_types(self, therapy_types):
         """

requirements.txt

@@ -14,8 +14,9 @@ MarkupSafe==2.1.5
 packaging==24.1
 pydantic==2.8.2
 pydantic_core==2.20.1
+redis==5.2.0
 requests==2.32.3
 typing_extensions==4.12.2
 urllib3==2.2.2
 Werkzeug==3.0.3
-WTForms==3.1.2
+WTForms==3.1.2