diff --git a/api/ovdashboard_api/dav_calendar.py b/api/ovdashboard_api/dav_calendar.py
index a4f8566..cea94f0 100644
--- a/api/ovdashboard_api/dav_calendar.py
+++ b/api/ovdashboard_api/dav_calendar.py
@@ -11,6 +11,7 @@ from vobject.icalendar import VEvent
 
 from .async_helpers import get_ttl_hash, run_in_executor, timed_alru_cache
 from .dav_common import caldav_principal
+from .settings import SETTINGS
 
 _logger = logging.getLogger(__name__)
 
@@ -123,13 +124,13 @@ class DavCalendar:
     @property
     async def calendar(self) -> Calendar:
         return await _get_calendar(
-            ttl_hash=get_ttl_hash(20),
+            ttl_hash=get_ttl_hash(SETTINGS.cache_seconds),
             calendar_name=self.calendar_name,
         )
 
     @property
     async def events(self) -> list[CalEvent]:
         return await _get_calendar_events(
-            ttl_hash=get_ttl_hash(20),
+            ttl_hash=get_ttl_hash(SETTINGS.cache_seconds),
             calendar_name=self.calendar_name,
         )
diff --git a/api/ovdashboard_api/dav_file.py b/api/ovdashboard_api/dav_file.py
index 137e7a0..acaa22c 100644
--- a/api/ovdashboard_api/dav_file.py
+++ b/api/ovdashboard_api/dav_file.py
@@ -7,6 +7,7 @@ from webdav3.client import Resource
 
 from .async_helpers import get_ttl_hash, run_in_executor, timed_alru_cache
 from .dav_common import webdav_resource
+from .settings import SETTINGS
 
 _logger = logging.getLogger(__name__)
 
@@ -34,7 +35,7 @@ class DavFile:
     @property
     async def __buffer(self) -> BytesIO:
         return await _get_buffer(
-            ttl_hash=get_ttl_hash(20),
+            ttl_hash=get_ttl_hash(SETTINGS.cache_seconds),
             remote_path=self.remote_path,
         )
 
diff --git a/api/ovdashboard_api/settings.py b/api/ovdashboard_api/settings.py
index 554e42c..b55f4f2 100644
--- a/api/ovdashboard_api/settings.py
+++ b/api/ovdashboard_api/settings.py
@@ -32,6 +32,7 @@ class Settings(BaseSettings):
     dav_path: str = "ovdashboard"
 
     ticker_separator: str = " +++ "
+    cache_seconds: int = 30
 
     @property
     def caldav_url(self) -> str: