Cassandra 4.0 PagingState token reuse after session closure remains undefined

Goal

Determine whether a PagingState token obtained from a query can be safely reused after the originating CQL session is closed.

Constraints and uncertainty

• The Cassandra 4.0 documentation describes PagingState as an opaque token for server‑side pagination but does not specify its lifecycle relative to session termination.
• Reusing a token across sessions may cause the server to return incomplete or duplicate rows because the token’s internal range may no longer match the current data distribution.
• Applications that cache tokens for resumable pagination lack clear guidance, increasing risk of memory leaks or inconsistent results.

Open questions

1. Is a PagingState guaranteed to remain valid after its session ends?
2. If not, what is the recommended pattern for persisting pagination progress across client restarts?
3. Are there version‑specific differences in token validity between Cassandra 3.11, 4.0, and 4.1?