'Can NATS JetStream partially replicate streams on different NATS Servers
I have Server A with NATS Jet Stream.I want some part of NATS Streams replicated on Server B and Server C (NATS Streams) mutually exclusive.
Solution 1:[1]
As far as the Stream's built-in replication goes you can not: all the messages are replicated in all the nats-servers (according to the number of replicas). But you can use tags to select which cluster (or which servers in a cluster) are used. You can also mirror streams and source streams from other streams (and subjects).
I should add that you can also effectively split a stream in multiple streams (like partitions) by using the partition function of subject name mapping since nats-server version 2.8. (https://docs.nats.io/nats-concepts/subject_mapping#deterministic-subject-token-partitioning)
Sources
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Source: Stack Overflow
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