SDK to handle REST redirect from follower to leader on queries (GET)

[tock-ibm]

Queries (GET) may be directed to the leader or a follower depending on the “read-concern” specified in the transaction context. The query should specify its read-concern so that the server can redirect it if necessary.

The server's REST layer redirects the client from a follower to the leader using a status code 307 (temporary) / 308 (permanent). Since the leader seldom changes the SDK may remember the redirection and use the new target in all future requests (until another redirect).