Add option to ignore startup failures

[gunnarlium]

This will allow the server to start even when Redis is unavailable. As caching is sometimes just a nice performance enhancement, it can be too drastic to prevent the Hapi-server from start when the cache is unavailable.

GET/SET operations already fail silently for intermittent connection errors.

This should maybe be amended to allow reconnection attempts on startup as well.

[FGRibreau]

👍 nice addition !

[LoicMahieu]

Hi

Great addition indeed. This is a annoying behavior for us too and I like the idea of being able to set it.
It obviously related to the discussion began by @FGRibreau hapijs/catbox#173

I just made the test, if the client failed to connect at startup, never reconnect ... until the restart the process.
I am trying to look at in redis, but I can't find a way to do reconnect it later.

[gunnarlium]

Yeah, not too happy about the "single try" approach. Due how the caches are designed, there's no obvious clean way to handle this. But I'd really like to address that issue as well.

[LoicMahieu]

Hi @gunnarlium
catbox-redis@3.0.1 is out. We switch to ioredis for communication with Redis.
I know that ioredis does not hard fail when it could not connect to the server.
So I close the issue but feel free to open a new one if you think the problem is not solved.
Thanks.

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