d Attributes</strong>. The set of <a href=https://istio.io/v1.6/docs/reference/config/policy-and-telemetry/attribute-vocabulary/>attributes</a> used to describe the source and
destination of traffic have been completely revamped in order to be more
precise and comprehensive.</p></li><li><p><strong>Policy Check Cache</strong>. Mixer now features a large level 2 cache for policy checks, complementing the level 1 cache
present in the sidecar proxy. This further reduces the average latency of externally-enforce