I'm thinking about using the Toolforge Redis instance for a persistent data store. For the data I want to store, it's OK if there's occasional evictions due to memory exhaustion, but only for fairly small values of "occasional".
So, I'm curious what the situation is for this particular instance. How often does data tend to get evicted? If the answer is, "We haven't seen that happen in many months", then I'm fine. If the answer is, "It happens every day", then I need to be looking at a different data store.