Is caching logic available from a Script API?

Question

I'd like to be able to get/set a cached value for a user, preferably with a configurable TTL. Is there a way to do this from a Widget - either with Velocity or JavaScript? 
 (pseudo-code e.g.) 
 
 var accessToken = someApi.userCache.get("remote.service.access.token", null);

if (accessToken == null) {
 accessToken = generateAccessToken(currentUser);
 someApi.userCache.set("remote.service.access.token", accessToken, timespan(30, "minutes"));
}

Michael Monteleone · Accepted Answer

While there is a supported caching API , it's only exposed to plugins currently. There isn't currently a built-in wrapper to expose it, generically, to scripted widgets, automations, or themes. That said, it wouldn't be difficult to drop in your own plugin that exposes it as a custom script extension . 
 Is this, by any chance, an automation? If so, a relatively new addition (in 11.1) is the new context_v2_automationState API, which let's you save and retrieve state specific to a configured automation instance. It's not quite the same as caching, but it was added to help with similar token scenarios.