[jira] [Updated] (SLING-5423) embedded raft based discovery mechanism

["Bertrand Delacretaz (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLING-5423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bertrand Delacretaz updated SLING-5423:
---------------------------------------
    Assignee: Timothee Maret

> embedded raft based discovery mechanism
> ---------------------------------------
>
>                 Key: SLING-5423
>                 URL: https://issues.apache.org/jira/browse/SLING-5423
>             Project: Sling
>          Issue Type: New Feature
>          Components: Extensions
>    Affects Versions: Discovery Standalone 1.0.2
>            Reporter: Timothee Maret
>            Assignee: Timothee Maret
>
> The Raft consensus algorithm [0] is a good pick for implenting the discovery API or more generally clustering solutions.
> Indeed, Raft algorithm design aims at being "easy" to understand and thus "easy" to be implemented/debugged maybe by mere mortals.
> One of the major implementation of Raft is etcd [1] which Sling can already leverage (SLING-4842).
> However, etcd requires an extra piece of infrastructure to be deployed (the etcd servers) which can't be shipped as part of the Sling quickstart (Go vs Java techs). 
> Using an embedded Raft based discovery and clustering mechanism would bring an easy to deploy solution (OOTB) and based on proven algorithm.
> As Raft is designed to be easy to implement, many implementations already exists [0].
> Ideally an existing implementation could be reused instead of reimplementing it though. 
> An interesting one is Copycat [2] which is now released and Apache 2 licensed.
> [0] https://raft.github.io
> [1] https://github.com/coreos/etcd
> [2] https://github.com/atomix/copycat



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