I have added the file to IPFS using “https://ipfs.infura.io:5001/api/v0/add”.
The doc says the added file is automatically pinned.
my question is that
is this guaranting that this file will always exist in IPFS forever?
Or
is it removed from IPFS 6 months after the last access?
If the latter case is correct, should I use the “api/v0/pin/add” API if I want to keep the file persistently in IPFS no matter when that file is accessed?