ffective QPS to the backends.</p><h2 id="work-ahead">Work ahead</h2><p>We have opportunities ahead to continue improving the system in many ways.</p><h3 id="config-canaries">Config canaries</h3><p>Mixer is highly scaled so it is generally resistant to individual instance failures. However, Mixer is still susceptible to cascading failures in the case when a poison configuration is deployed which causes all Mixer instances to crash basically at the same time (yeah, that would be a bad day). To prevent this fr