Timothee Maret created SLING-4968:
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Summary: ZooKeeper based discovery mechanism
Key: SLING-4968
URL: https://issues.apache.org/jira/browse/SLING-4968
Project: Sling
Issue Type: New Feature
Components: Extensions
Reporter: Timothee Maret
As described in SLING-2939, an embedded ZK still is not optimal since
1. Still uses System.exit statements in its code
2. Requires Netty server dependencies (Sling ships Jetty)
- extra dependencies to manage / embed
- most probably requires to run on a new port
However, using ZooKeeper as discovery mechanism in a non embedded mode
(dedicated infrastructure) still makes a lot of sense in large deployments.
Indeed, considering that ZK is widely adopted in 3rd party products a large
deployment would typically already deploy a ZK infrastructure which could be
reused by a Sling discovery implementation.
Furthermore, in terms of efficiency (# of requests), a ZK discovery
implementation is expected to score high as it provides an efficient (non
polling based) mechanism for receiving notifications. This would guarantee a
fast propagation of Sling instances properties and state.
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