diff --git a/CHANGELOG.md b/CHANGELOG.md
index af88283ad..6bd2697d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ Write the date in place of the "Unreleased" in the case a new version is release
 - Use schemas for describing server configuration on the client side too.
 - Refactored Authentication providers to make use of inheritance, adjusted
   mode in the `AboutAuthenticationProvider` schema to be `internal`|`external`.
+- Improved type hinting and efficiency of caching singleton values
 
 ## v0.1.0-b16 (2024-01-23)
 
diff --git a/tiled/config.py b/tiled/config.py
index 98248f975..991d2bf48 100644
--- a/tiled/config.py
+++ b/tiled/config.py
@@ -8,7 +8,7 @@
 import warnings
 from collections import defaultdict
 from datetime import timedelta
-from functools import lru_cache
+from functools import cache
 from pathlib import Path
 
 import jsonschema
@@ -25,7 +25,7 @@
 from .validation_registration import validation_registry as default_validation_registry
 
 
-@lru_cache(maxsize=1)
+@cache
 def schema():
     "Load the schema for service-side configuration."
     import yaml
diff --git a/tiled/profiles.py b/tiled/profiles.py
index 35afa193c..b4e35755e 100644
--- a/tiled/profiles.py
+++ b/tiled/profiles.py
@@ -13,7 +13,7 @@
 import shutil
 import sys
 import warnings
-from functools import lru_cache
+from functools import cache
 from pathlib import Path
 
 import jsonschema
@@ -35,7 +35,7 @@
 ]
 
 
-@lru_cache(maxsize=1)
+@cache
 def schema():
     "Load the schema for profiles."
     import yaml
@@ -204,7 +204,7 @@ def resolve_precedence(levels):
     return combined
 
 
-@lru_cache(maxsize=1)
+@cache
 def load_profiles():
     """
     Return a mapping of profile_name to (source_path, content).
diff --git a/tiled/server/app.py b/tiled/server/app.py
index 468a6203a..54429b2c5 100644
--- a/tiled/server/app.py
+++ b/tiled/server/app.py
@@ -8,7 +8,7 @@
 import urllib.parse
 import warnings
 from contextlib import asynccontextmanager
-from functools import lru_cache, partial
+from functools import cache, partial
 from pathlib import Path
 from typing import List
 
@@ -437,15 +437,15 @@ async def unhandled_exception_handler(
         response_model=schemas.GetDistinctResponse,
     )(patch_route_signature(distinct, query_registry))
 
-    @lru_cache(1)
+    @cache
     def override_get_authenticators():
         return authenticators
 
-    @lru_cache(1)
+    @cache
     def override_get_root_tree():
         return tree
 
-    @lru_cache(1)
+    @cache
     def override_get_settings():
         settings = get_settings()
         for item in [
@@ -771,14 +771,14 @@ async def set_cookies(request: Request, call_next):
     app.dependency_overrides[get_settings] = override_get_settings
     if query_registry is not None:
 
-        @lru_cache(1)
+        @cache
         def override_get_query_registry():
             return query_registry
 
         app.dependency_overrides[get_query_registry] = override_get_query_registry
     if serialization_registry is not None:
 
-        @lru_cache(1)
+        @cache
         def override_get_serialization_registry():
             return serialization_registry
 
@@ -788,7 +788,7 @@ def override_get_serialization_registry():
 
     if validation_registry is not None:
 
-        @lru_cache(1)
+        @cache
         def override_get_validation_registry():
             return validation_registry
 
diff --git a/tiled/server/authentication.py b/tiled/server/authentication.py
index c9360a8a3..dc974fe04 100644
--- a/tiled/server/authentication.py
+++ b/tiled/server/authentication.py
@@ -26,7 +26,6 @@
 from fastapi.security.api_key import APIKeyBase, APIKeyCookie, APIKeyQuery
 from fastapi.security.utils import get_authorization_scheme_param
 from fastapi.templating import Jinja2Templates
-from pydantic_settings import BaseSettings
 from sqlalchemy.future import select
 from sqlalchemy.orm import selectinload
 from sqlalchemy.sql import func
@@ -62,7 +61,7 @@
 from . import schemas
 from .core import DEFAULT_PAGE_SIZE, MAX_PAGE_SIZE, json_or_msgpack
 from .protocols import InternalAuthenticator, UserSessionState
-from .settings import get_settings
+from .settings import Settings, get_settings
 from .utils import API_KEY_COOKIE_NAME, get_authenticators, get_base_url
 
 ALGORITHM = "HS256"
@@ -214,7 +213,7 @@ async def get_decoded_access_token(
     request: Request,
     security_scopes: SecurityScopes,
     access_token: str = Depends(oauth2_scheme),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     if not access_token:
         return None
@@ -239,7 +238,7 @@ async def get_current_principal(
     security_scopes: SecurityScopes,
     decoded_access_token: str = Depends(get_decoded_access_token),
     api_key: str = Depends(get_api_key),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     authenticators=Depends(get_authenticators),
     db=Depends(get_database_session),
 ):
@@ -509,7 +508,7 @@ def build_auth_code_route(authenticator, provider):
 
     async def route(
         request: Request,
-        settings: BaseSettings = Depends(get_settings),
+        settings: Settings = Depends(get_settings),
         db=Depends(get_database_session),
     ):
         request.state.endpoint = "auth"
@@ -607,7 +606,7 @@ async def route(
         code: str = Form(),
         user_code: str = Form(),
         state: Optional[str] = None,
-        settings: BaseSettings = Depends(get_settings),
+        settings: Settings = Depends(get_settings),
         db=Depends(get_database_session),
     ):
         request.state.endpoint = "auth"
@@ -670,7 +669,7 @@ def build_device_code_token_route(authenticator, provider):
     async def route(
         request: Request,
         body: schemas.DeviceCode,
-        settings: BaseSettings = Depends(get_settings),
+        settings: Settings = Depends(get_settings),
         db=Depends(get_database_session),
     ):
         request.state.endpoint = "auth"
@@ -710,7 +709,7 @@ def build_handle_credentials_route(authenticator: InternalAuthenticator, provide
     async def route(
         request: Request,
         form_data: OAuth2PasswordRequestForm = Depends(),
-        settings: BaseSettings = Depends(get_settings),
+        settings: Settings = Depends(get_settings),
         db=Depends(get_database_session),
     ):
         request.state.endpoint = "auth"
@@ -962,7 +961,7 @@ async def apikey_for_principal(
 async def refresh_session(
     request: Request,
     refresh_token: schemas.RefreshToken,
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     db=Depends(get_database_session),
 ):
     "Obtain a new access token and refresh token."
@@ -975,7 +974,7 @@ async def refresh_session(
 async def revoke_session(
     request: Request,
     refresh_token: schemas.RefreshToken,
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     db=Depends(get_database_session),
 ):
     "Mark a Session as revoked so it cannot be refreshed again."
diff --git a/tiled/server/dependencies.py b/tiled/server/dependencies.py
index fd2d4d4e8..09b8d8233 100644
--- a/tiled/server/dependencies.py
+++ b/tiled/server/dependencies.py
@@ -1,4 +1,4 @@
-from functools import lru_cache
+from functools import cache
 from typing import Optional, Tuple, Union
 
 import pydantic_settings
@@ -24,25 +24,25 @@
 SLICE_REGEX = rf"^{DIM_REGEX}(?:,{DIM_REGEX})*$"
 
 
-@lru_cache(1)
+@cache
 def get_query_registry():
     "This may be overridden via dependency_overrides."
     return default_query_registry
 
 
-@lru_cache(1)
+@cache
 def get_deserialization_registry():
     "This may be overridden via dependency_overrides."
     return default_deserialization_registry
 
 
-@lru_cache(1)
+@cache
 def get_serialization_registry():
     "This may be overridden via dependency_overrides."
     return default_serialization_registry
 
 
-@lru_cache(1)
+@cache
 def get_validation_registry():
     "This may be overridden via dependency_overrides."
     return default_validation_registry
diff --git a/tiled/server/metrics.py b/tiled/server/metrics.py
index 2139fe132..d6e0d79ee 100644
--- a/tiled/server/metrics.py
+++ b/tiled/server/metrics.py
@@ -5,7 +5,7 @@
 """
 
 import os
-from functools import lru_cache
+from functools import cache
 
 from fastapi import APIRouter, Request, Response, Security
 from prometheus_client import CONTENT_TYPE_LATEST, Histogram, generate_latest
@@ -135,7 +135,7 @@ def capture_request_metrics(request, response):
             ).observe(metrics["compress"]["ratio"])
 
 
-@lru_cache()
+@cache
 def prometheus_registry():
     """
     Configure prometheus_client.
diff --git a/tiled/server/router.py b/tiled/server/router.py
index a1a5293be..836e8b801 100644
--- a/tiled/server/router.py
+++ b/tiled/server/router.py
@@ -13,7 +13,6 @@
 from jmespath.exceptions import JMESPathError
 from json_merge_patch import merge as apply_merge_patch
 from jsonpatch import apply_patch as apply_json_patch
-from pydantic_settings import BaseSettings
 from starlette.status import (
     HTTP_200_OK,
     HTTP_206_PARTIAL_CONTENT,
@@ -64,7 +63,7 @@
 )
 from .file_response_with_range import FileResponseWithRange
 from .links import links_for_node
-from .settings import get_settings
+from .settings import Settings, get_settings
 from .utils import filter_for_access, get_base_url, record_timing
 
 router = APIRouter()
@@ -73,7 +72,7 @@
 @router.get("/", response_model=About)
 async def about(
     request: Request,
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     authenticators=Depends(get_authenticators),
     serialization_registry=Depends(get_serialization_registry),
     query_registry=Depends(get_query_registry),
@@ -375,7 +374,7 @@ async def array_block(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a chunk of array-like data.
@@ -453,7 +452,7 @@ async def array_full(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a slice of array-like data.
@@ -516,7 +515,7 @@ async def get_table_partition(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a partition (continuous block of rows) from a DataFrame [GET route].
@@ -565,7 +564,7 @@ async def post_table_partition(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a partition (continuous block of rows) from a DataFrame [POST route].
@@ -590,7 +589,7 @@ async def table_partition(
     format: Optional[str],
     filename: Optional[str],
     serialization_registry,
-    settings: BaseSettings,
+    settings: Settings,
 ):
     """
     Fetch a partition (continuous block of rows) from a DataFrame.
@@ -647,7 +646,7 @@ async def get_table_full(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch the data for the given table [GET route].
@@ -675,7 +674,7 @@ async def post_table_full(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch the data for the given table [POST route].
@@ -698,7 +697,7 @@ async def table_full(
     format: Optional[str],
     filename: Optional[str],
     serialization_registry,
-    settings: BaseSettings,
+    settings: Settings,
 ):
     """
     Fetch the data for the given table.
@@ -860,7 +859,7 @@ async def node_full(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch the data below the given node.
@@ -926,7 +925,7 @@ async def get_awkward_buffers(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a slice of AwkwardArray data.
@@ -963,7 +962,7 @@ async def post_awkward_buffers(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a slice of AwkwardArray data.
@@ -993,7 +992,7 @@ async def _awkward_buffers(
     format: Optional[str],
     filename: Optional[str],
     serialization_registry,
-    settings: BaseSettings,
+    settings: Settings,
 ):
     structure_family = entry.structure_family
     structure = entry.structure()
@@ -1044,7 +1043,7 @@ async def awkward_full(
     format: Optional[str] = None,
     filename: Optional[str] = None,
     serialization_registry=Depends(get_serialization_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     """
     Fetch a slice of AwkwardArray data.
@@ -1090,7 +1089,7 @@ async def post_metadata(
     path: str,
     body: schemas.PostMetadataRequest,
     validation_registry=Depends(get_validation_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     entry=SecureEntry(scopes=["write:metadata", "create"]),
 ):
     for data_source in body.data_sources:
@@ -1120,7 +1119,7 @@ async def post_register(
     path: str,
     body: schemas.PostMetadataRequest,
     validation_registry=Depends(get_validation_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     entry=SecureEntry(scopes=["write:metadata", "create", "register"]),
 ):
     return await _create_node(
@@ -1138,7 +1137,7 @@ async def _create_node(
     path: str,
     body: schemas.PostMetadataRequest,
     validation_registry,
-    settings: BaseSettings,
+    settings: Settings,
     entry,
 ):
     metadata, structure_family, specs = (
@@ -1189,7 +1188,7 @@ async def put_data_source(
     path: str,
     data_source: int,
     body: schemas.PutDataSourceRequest,
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     entry=SecureEntry(scopes=["write:metadata", "register"]),
 ):
     await entry.put_data_source(
@@ -1410,7 +1409,7 @@ async def patch_metadata(
     request: Request,
     body: schemas.PatchMetadataRequest,
     validation_registry=Depends(get_validation_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     entry=SecureEntry(scopes=["write:metadata"]),
 ):
     if not hasattr(entry, "replace_metadata"):
@@ -1473,7 +1472,7 @@ async def put_metadata(
     request: Request,
     body: schemas.PutMetadataRequest,
     validation_registry=Depends(get_validation_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
     entry=SecureEntry(scopes=["write:metadata"]),
 ):
     if not hasattr(entry, "replace_metadata"):
@@ -1563,7 +1562,7 @@ async def get_asset(
     id: int,
     relative_path: Optional[Path] = None,
     entry=SecureEntry(scopes=["read:data"]),  # TODO: Separate scope for assets?
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     if not settings.expose_raw_assets:
         raise HTTPException(
@@ -1660,7 +1659,7 @@ async def get_asset_manifest(
     request: Request,
     id: int,
     entry=SecureEntry(scopes=["read:data"]),  # TODO: Separate scope for assets?
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     if not settings.expose_raw_assets:
         raise HTTPException(
@@ -1707,7 +1706,7 @@ async def validate_metadata(
     structure,
     specs: List[Spec],
     validation_registry=Depends(get_validation_registry),
-    settings: BaseSettings = Depends(get_settings),
+    settings: Settings = Depends(get_settings),
 ):
     metadata_modified = False
 
diff --git a/tiled/server/settings.py b/tiled/server/settings.py
index 57015f166..e68c9b283 100644
--- a/tiled/server/settings.py
+++ b/tiled/server/settings.py
@@ -2,7 +2,7 @@
 import os
 import secrets
 from datetime import timedelta
-from functools import lru_cache
+from functools import cache
 from typing import Any, List, Optional
 
 from pydantic_settings import BaseSettings
@@ -79,6 +79,6 @@ def database_settings(self):
         )
 
 
-@lru_cache()
-def get_settings():
+@cache
+def get_settings() -> Settings:
     return Settings()