Dispatchers

Dispatchers propagate incremental policy updates to multiple enforcer instances (e.g. a cluster). They use a consistency protocol (e.g. Raft) so all enforcers eventually see the same policy. Casbin’s normal API (AddPolicy, RemovePolicy, etc.) is unchanged; the dispatcher sends updates to other nodes.

Two parts: (1) hooks inside Casbin that the dispatcher implements, and (2) dispatcher-specific setup (e.g. cluster membership, config).

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Dispatchers only sync changes after init. They do not fix existing divergence. Start all enforcers with the same policy (e.g. from the same DB or snapshot) before enabling a dispatcher.

Available dispatchers:

Adapter	Type	Author	Description
Hashicorp Raft Dispatcher	Raft	Casbin	A dispatcher based on Hashicorp Raft
KDKYG/casbin-dispatcher	Raft	@KDKYG	A dispatcher based on Hashicorp Raft

DistributedEnforcer

DistributedEnforcer wraps SyncedEnforcer to work with dispatchers.

    e, _ := casbin.NewDistributedEnforcer("examples/basic_model.conf", "examples/basic_policy.csv")