# spicedb


03/31/2022, 4:46 PM
> Have you measured anything that gave you the idea that write traffic affects request handling performance at all Well, I've tested stopping the incoming writes on my system and observed that it improves check performances by ~30% (very rough numbers). > writes to the datastore do impact caching regardless of what server they take place on. Hmmmm interesting. Given that I'm not passing a zedtoken ever, I assumed that whatever happens in my writer instances shouldn't have any impact on my reader instances: the cache might be a few secs out of date but that's OK. Is this assumption wrong?