@clickup/ent-framework
Version:
A PostgreSQL graph-database-alike library with microsharding and row-level security
40 lines • 1.28 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.VCCaches = void 0;
const WeakTicker_1 = require("../internal/WeakTicker");
/**
* Holds an auto-expiring map of VC caches.
*/
class VCCaches extends Map {
constructor(expirationMs) {
super();
this.expirationMs = expirationMs;
}
/**
* Calls the Map's get() and defers cache clearing to the next WeakTicker
* tick (i.e. schedules clearing on inactivity).
*/
get(key) {
if (this.expirationMs > 0) {
weakTicker.schedule(this, this.expirationMs);
}
return super.get(key);
}
/**
* Called periodically after VC#cache() was called at least once.
*/
onTick(tickNoSinceScheduling) {
if (tickNoSinceScheduling === 0) {
// Skip the very 1st tick after the most recent scheduling. Starting from
// the 2nd tick, we can be sure that query cache hasn't been accessed
// within at least expirationMs.
return "keep";
}
this.clear();
return "unschedule";
}
}
exports.VCCaches = VCCaches;
// Clears VC caches after some time of inactivity.
const weakTicker = new WeakTicker_1.WeakTicker();
//# sourceMappingURL=VCCaches.js.map