Cloud: Cluster-Wide Configuration Using HTTP
From Resin 4.0 Wiki
Configuration Sharing: Cluster-Wide Configuration Using HTTP
In most cases, Resin can handle HTTP(S) URLs interchangeably with file paths. This provides the handy ability to pull configuration files from a central configuration repository over HTTP. Although it adds a possible single point of failure (the configuration server), for large clustered deployments the convenience of not having to synchronize configuration files to each machine can not be understated.
Note: Resin can also use cloud repository based configuration, which is stored in the Triad and shared between cluster members using Resin's internal .git implementation. While cloud configuration is slightly harder to work with than HTTP, it has the added advantage of having no SPOF, and requiring no additional HTTP server. An administrator can make the choice which works best for their architecture, or both can be used at the same time if desired.