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

---------

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

cashu/mint/router.py

@@ -28,9 +28,11 @@ from ..core.models import (
 )
 from ..core.settings import settings
 from ..mint.startup import ledger
+from .cache import RedisCache
 from .limit import limit_websocket, limiter
 
-router: APIRouter = APIRouter()
+router = APIRouter()
+redis = RedisCache()
 
 
 @router.get(
@@ -237,6 +239,7 @@ async def websocket_endpoint(websocket: WebSocket):
     ),
 )
 @limiter.limit(f"{settings.mint_transaction_rate_limit_per_minute}/minute")
+@redis.cache()
 async def mint(
     request: Request,
     payload: PostMintRequest,
@@ -314,6 +317,7 @@ async def get_melt_quote(request: Request, quote: str) -> PostMeltQuoteResponse:
     ),
 )
 @limiter.limit(f"{settings.mint_transaction_rate_limit_per_minute}/minute")
+@redis.cache()
 async def melt(request: Request, payload: PostMeltRequest) -> PostMeltQuoteResponse:
     """
     Requests tokens to be destroyed and sent out via Lightning.
@@ -336,6 +340,7 @@ async def melt(request: Request, payload: PostMeltRequest) -> PostMeltQuoteRespo
     ),
 )
 @limiter.limit(f"{settings.mint_transaction_rate_limit_per_minute}/minute")
+@redis.cache()
 async def swap(
     request: Request,
     payload: PostSwapRequest,