def simple_function1():
return db_get(id=1)
def simple_function2():
return db_get(id=2)
def some_bigger_function():
return {"1": simple_function1(), "2": simple_function2(), "3": db_get(id=3)}
@cached('key1')
def simple_function1():
return db_get(id=1)
@cached('key2')
def simple_function2():
return db_get(id=2)
# SUPPOSE THIS IS IN ANOTHER MODULE
@cached('big_key1')
def some_bigger_function():
"""
this function depends on big_key1, key1 and key2
"""
def inner_workings():
db_set(1, 'something totally new')
#######
## imagine 100 lines of code here :)
######
inner_workings()
return [simple_function1(),simple_function2()]
if __name__ == '__main__':
simple_function1()
simple_function2()
a,b = some_bigger_function()
assert a == db_get(id=1), "this fails because we didn't invalidated cache properly"
@cached("key1")
def simple_function1():
return db_get(id=1)
@cached("key2")
def simple_function2():
return db_get(id=2)
# SUPPOSE THIS IS IN ANOTHER MODULE
@cached("key")
def some_bigger_function():
return {"1": simple_function1(), "2": simple_function2(), "3": db_get(id=3)}
if __name__ == "__main__":
simple_function1()
# somewhere else
db_set(1, "foobar")
# and again
db_set(3, "bazbar")
invalidate("key")
# ooops, we forgot something
data = some_bigger_function()
assert data["1"] == db_get(id=1), "this fails because we didn't manage to invalidate all the keys"
