diff --git a/scanner/scanner/cache.py b/scanner/scanner/cache.py
index 65e38a50..5abefcc1 100644
--- a/scanner/scanner/cache.py
+++ b/scanner/scanner/cache.py
@@ -2,7 +2,6 @@ import asyncio
 from datetime import datetime, timedelta
 from functools import wraps
 from typing import Any, Optional, Tuple
-from providers.utils import ProviderError
 
 type Cache = dict[Any, Tuple[Optional[asyncio.Event], Optional[datetime], Any]]
 
diff --git a/scanner/scanner/scanner.py b/scanner/scanner/scanner.py
index c29f250c..91dee2a6 100644
--- a/scanner/scanner/scanner.py
+++ b/scanner/scanner/scanner.py
@@ -1,3 +1,4 @@
+from datetime import timedelta
 import os
 import asyncio
 import logging
@@ -11,7 +12,10 @@ from providers.provider import Provider
 from providers.types.collection import Collection
 from providers.types.episode import Episode, PartialShow
 from providers.types.season import Season, SeasonTranslation
-from .utils import batch, log_errors, provider_cache, set_in_cache
+from .utils import batch, log_errors
+from .cache import cache, exec_as_cache, make_key
+
+season_cache = {}
 
 
 class Scanner:
@@ -29,7 +33,6 @@ class Scanner:
 			self._ignore_pattern = re.compile("")
 			logging.error(f"Invalid ignore pattern. Ignoring. Error: {e}")
 		self.provider = Provider.get_all(client, languages)[0]
-		self.cache = {"shows": {}, "seasons": {}, "collections": {}}
 		self.languages = languages
 
 	async def scan(self, path: str):
@@ -122,7 +125,7 @@ class Scanner:
 			logging.warn("Unknown video file type: %s", raw["type"])
 
 	async def create_or_get_collection(self, collection: Collection) -> str:
-		@provider_cache("collection")
+		@cache(ttl=timedelta(days=1))
 		async def create_collection(provider_id: str):
 			# TODO: Check if a collection with the same metadata id exists already on kyoo.
 			new_collection = (
@@ -152,7 +155,7 @@ class Scanner:
 				r.raise_for_status()
 
 	async def create_or_get_show(self, episode: Episode) -> str:
-		@provider_cache("shows")
+		@cache(ttl=timedelta(days=1))
 		async def create_show(_: str):
 			# TODO: Check if a show with the same metadata id exists already on kyoo.
 			show = (
@@ -167,20 +170,32 @@ class Scanner:
 			# TODO: collections
 			logging.debug("Got show: %s", episode)
 			ret = await self.post("show", data=show.to_kyoo())
-			try:
-				for season in show.seasons:
+
+			async def create_season(season: Season):
+				try:
 					season.show_id = ret
-					await self.post("seasons", data=season.to_kyoo())
-					set_in_cache(key=["seasons", ret, season.season_number])
-			except Exception as e:
-				logging.exception("Unhandled error create a season", exc_info=e)
+					return await self.post("seasons", data=season.to_kyoo())
+				except Exception as e:
+					logging.exception("Unhandled error create a season", exc_info=e)
+
+			season_tasks = (
+				exec_as_cache(
+					season_cache,
+					make_key((ret, s.season_number)),
+					lambda: create_season(s),
+				)
+				for s in show.seasons
+			)
+			await asyncio.gather(*season_tasks)
+
 			return ret
 
 		# The parameter is only used as a key for the cache.
 		provider_id = episode.show.external_id[self.provider.name].data_id
 		return await create_show(provider_id)
 
-	@provider_cache("seasons")
+	# We use an external season cache because we want to edit this cache programatically
+	@cache(ttl=timedelta(days=1), cache=season_cache)
 	async def register_seasons(self, show_id: str, season_number: int) -> str:
 		# TODO: fetch season here. this will be useful when a new season of a show is aired after the show has been created on kyoo.
 		season = Season(
diff --git a/scanner/scanner/utils.py b/scanner/scanner/utils.py
index ff780119..d6f3c7ff 100644
--- a/scanner/scanner/utils.py
+++ b/scanner/scanner/utils.py
@@ -1,4 +1,3 @@
-import asyncio
 import logging
 from functools import wraps
 from itertools import islice
@@ -31,53 +30,3 @@ def log_errors(f):
 			logging.exception("Unhandled error", exc_info=e)
 
 	return internal
-
-
-cache = {}
-
-
-def provider_cache(*args):
-	ic = cache
-	for arg in args:
-		if arg not in ic:
-			ic[arg] = {}
-		ic = ic[arg]
-
-	def wrapper(f):
-		@wraps(f)
-		async def internal(*args, **kwargs):
-			nonlocal ic
-			for arg in args:
-				if arg not in ic:
-					ic[arg] = {}
-				ic = ic[arg]
-
-			if "event" in ic:
-				await ic["event"].wait()
-				if "ret" not in ic:
-					raise ProviderError("Cache miss. Another error should exist")
-				return ic["ret"]
-			ic["event"] = asyncio.Event()
-			try:
-				ret = await f(*args, **kwargs)
-				ic["ret"] = ret
-			except:
-				ic["event"].set()
-				raise
-			ic["event"].set()
-			return ret
-
-		return internal
-
-	return wrapper
-
-
-def set_in_cache(key: list[str | int]):
-	ic = cache
-	for arg in key:
-		if arg not in ic:
-			ic[arg] = {}
-		ic = ic[arg]
-	evt = asyncio.Event()
-	evt.set()
-	ic["event"] = evt