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Watchers

We support to use distributed messaging systems like etcd to keep consistence between multiple Casbin enforcer instances. So our users can concurrently use multiple Casbin enforcers to handle large number of permission checking requests.

Similar to policy storage adapters, we don't put watcher code in the main library. Any support for a new messaging system should be implemented as a watcher. A complete list of Casbin watchers is provided as below. Any 3rd-party contribution on a new watcher is welcomed, please inform us and I will put it in this list:)

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Watcher	Type	Author	Description
Etcd Watcher	KV store	Casbin	Watcher for etcd
NATS Watcher	Messaging system	Soluto	Watcher for NATS
ZooKeeper Watcher	KV store	Grepsr	Watcher for Apache ZooKeeper
Redis Watcher	KV store	@billcobbler	Watcher for Redis
GCP Pub/Sub Watcher	Messaging system	LivingPackets	Watcher for Google Cloud Platform PUB/SUB

Watcher	Type	Author	Description
Etcd Watcher	KV store	Casbin	Watcher for etcd
Redis Watcher	KV store	Casbin	Watcher for Redis

Watcher	Type	Author	Description
Redis Watcher	KV store	@Sbou	Watcher for Redis