<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=<my-key>&libraries=places"></script>
Consider Fixing:
Leverage browser caching Setting an expiry date or a maximum age in the HTTP headers for static resources instructs
the browser to load previously downloaded resources from local disk
rather than over the network. Leverage browser caching for the
following cacheable resources:
(30 minutes)