Redis sentinel support

[CarlosDominguezBecerril]

Proposed change

Hey, thanks for the people working on this repo, amazing work

My understanding is that we want to use traefik + redis to offer high availability on the proxy. Right now Redis is a single point of failure since the current implementation only allows to connect directly to the instance hosting it, so when redis is down all the components that rely directly or indirectly on it are going to stop working

I would like to consider support for Redis Sentinel for real HA

Thanks

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