pub const PARTITION_KEY_HEADER: &str = "redis-partition-key";Expand description
The well-known header key for per-message routing / partitioning.
Set this header on outgoing messages to control key-based fan-out when the runtime is
configured with workers(N, by_key). The value is opaque bytes; the runtime hashes it to
assign a dispatch lane. Redis has no native partition concept on a single stream, so the key
travels as this header value and the sender is responsible for setting it.