A snapshot named snapshot 1 is created for a Stream on Jan 1 2017 (For example)
Later I create a stream out of snapshot 1 and do some code delivery. (On Feb 2017)
After a month, I create another stream out a snapshot 1. (March 2017)
Will the snapshot 1 have the same code as created on Jan 1 2017 ?
Will the snapshot 1 have the same code as created on Jan 1 2017 ?
Yes, that is the idea behind a snapshot: it is immutable... unless tou delete it (which is possible since RTC4.0) and recreate one with the same name.
But if you have not deleted it, a snapshot content never change.
来源：https://stackoverflow.com/questions/38663901/consistency-of-snapshot-code-in-rtc