I noticed on the new farm, the result file doesn’t count towards the space limit (64MB) anymore.
How should we monitor the size of the result file so that it won’t pass the limit, if there is any?
You are correct that the results files do not count toward the quota, which means that you don’t have to monitor their size. However, it is good practice to delete results once you have saved them in a secure, backed-up location on your device: it frees up space on our servers, and the results are then solely in your possession as they no longer rest on our servers.