Hey!
I'm not sure it's worth doing. While I don't think this is a bad idea, I
can't find any real gains to a shared instance in an Openshift world.
I do see a few downsides though:
- You'll need to share the same redis password across several projects.
I see that as a potential security issue.
- Since you'll use an emptyDir (in-memory storage), every restart will
flush the cache for all connected applications.
- Applications owners lose control over the redis instance in case they
want to do some fancy stuff with it, or just general debugging.
The resource footprint of a redis container is quite low.
We have a couple of redis pods deployed already, and the memory usage
for some of them is as low as 14Mb.
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