We recently switched to using Elasticache, and we're seeing some blips on the charts for Network Bandwidth In Allowance Exceeded, and for Network Bandwidth Out Allowance Exceeded:
This is weird because we're not using much bandwidth:
We are using a cache.t4g.small instance with cluster mode off and one replica. According to the pricing page, we should be getting "Up to 5 Gigabit" network performance. The charts above are nowhere near that.
So why is our bandwidth getting exceeded? Do I just need to suck it up and pay for a larger instance? If so, that's going to be about 4× more expensive, since the next instance with more bandwidth is a cache.m6g.large. Something seems off? Or maybe I can ignore these charts?
