Hello Community !
I just started with prefect and had a doubt.
I was going through the examples in the docs for Tasks caching and came across this one using the task_input_hash for the cache_key_fn.
example:
from datetime import timedelta
from prefect import flow, task
from prefect.tasks import task_input_hash
@task(cache_key_fn=task_input_hash, cache_expiration=timedelta(days=1))
def hello_task(name_input):
# Doing some work
print("Saying hello "+ name_input)
return "hello " + name_input
@flow
def hello_flow(name_input):
hello_task(name_input)
if name == “main”:
hello_flow(“world”)
When i run the flow everything works fine as expected , i.e when i rerun it i get the cached tasks result but the issue is in the UI under the task detail section i am getting Cache Key as None as well as Cache Expiration as None.
Why that so ? Am i missing something?