p>Mixer’s expected availability is considerably higher than most infrastructure backends (those often have availability of perhaps 99.9%). Its local caches and buffers help mask infrastructure backend failures by being able to continue operating even when a backend has become unresponsive.</p>
<h2 id="mixer-latency-slasher">Mixer: Latency slasher</h2>
<p>As we explained above, the Istio sidecars generally have fairly effective first-level caching. They can serve the majority of their traffic from cache. M