API Headers giving me MISS even though response is cached

[ShantanuKudva]

Below is a piece of code that configures the cache (I am using python 3.8)

`from typing_extensions import AsyncIterator
from contextlib import asynccontextmanager

from fastapi import FastAPI
from starlette.requests import Request
from starlette.responses import Response

from fastapi_cache import FastAPICache
from fastapi_cache.backends.redis import RedisBackend
from fastapi_cache.decorator import cache

from redis import asyncio as aioredis

async def init_cache():
try:
redis = aioredis.from_url( # type: ignore
os.environ.get('REDIS_URL', 'redis://localhost'),
encoding='utf-8',
decode_responses=False,
)
FastAPICache.init(RedisBackend(redis), prefix='igw-cache')
print('Cache initialized successfully.')
except Exception as e:
print(f'Error initializing cache: {e}')
finally:
await redis.close()
print('Redis connection closed.')

@asynccontextmanager
async def lifespan(_app: FastAPI) -> AsyncIterator[None]:
await init_cache()
yield

app = FastAPI(root_path=os.environ.get("ROOT_PATH", ''), lifespan=lifespan)

app.include_router(r1.router)
app.include_router(r2.router)
app.include_router(r3.router)
app.include_router(r4.router)
app.include_router(r5.router)`

and below is the code in one of the routers

@router.get("/dashboard/topLocations") @cache(expire=60) def get_top_locations( count: Annotated[int, Query(ge=1, le=10)], fromTime:datetime.datetime = Query( default=(datetime.datetime.now(tz=datetime.timezone.utc)- datetime.timedelta(days=7)).replace(hour=0, minute=0, second=0, microsecond=0), description="End time of the range" ), toTime: datetime.datetime = Query( default=datetime.datetime.now(tz=datetime.timezone.utc).replace(hour=23, minute=59, second=59, microsecond=999999), description="Start time of the range" )) -> TopLocations:

The response is being cached, but in my headers i am getting a MISS rather than a hit.
I tried to change the cache contents to have a TTL of -1, which gave me a HIT.

Is this a predictible behaviour?