NUT-19: Cached Requests and Responses (#624)

* fast-api-cache setup

* testing the cache

* fix

* still not working

* asynccontextmanager

* move test

* use redis & custom caching setup (like CDK)

* make format

* poetry lock

* fix format string + log when a cached response is found

* log when a cahced response is found

* fix tests

* poetry lock

* try tests on github

* use docker compose

* maybe we dont need docker

* fix types

* create_task instead of run

* how about we start postgres

* mint features

* format

* remove deprecated setex call

* use global expiry for all cached routes

* refactor feature map and set default to 1 week

* refactor feature construction

* Cache NUT-19

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Co-authored-by: callebtc <93376500+callebtc@users.noreply.github.com>

cashu/wallet/helpers.py

@@ -171,10 +171,11 @@ async def send(
     await wallet.set_reserved(send_proofs, reserved=True)
     return wallet.available_balance, token
 
+
 def check_payment_preimage(
     payment_hash: str,
     preimage: str,
 ) -> bool:
-    return bytes.fromhex(payment_hash) == hashlib.sha256(
-        bytes.fromhex(preimage)
-    ).digest()
+    return (
+        bytes.fromhex(payment_hash) == hashlib.sha256(bytes.fromhex(preimage)).digest()
+    )