server: fix cache expiring

packages/backend/src/misc/cache.ts

@@ -82,7 +82,7 @@ export class Cache<T> {
 		// Items may have been removed in the meantime or this may be
 		// the initial call for the first key inserted into the cache.
 		const [expiredKey, expiredValue] = this.cache.entries().next().value;
-		if (expiredValue.date + this.lifetime >= Date.now()) {
+		if (expiredValue.date + this.lifetime <= Date.now()) {
 			// This item is due for expiration, so remove it.
 			this.cache.delete(expiredKey);
 		}

packages/backend/src/services/register-or-fetch-instance-doc.ts

@@ -11,7 +11,7 @@ const cache = new Cache<Instance>(
 		if (host == null) return undefined;
 		const res = await Instances.findOneBy({ host });
 		return res ?? undefined;
-	} ,
+	},
 );
 
 export async function registerOrFetchInstanceDoc(idnHost: string): Promise<Instance> {