From 7b7a176c681ae649e8b2e44a28481cb9568eeec9 Mon Sep 17 00:00:00 2001
From: Till Faelligen <2353100+S7evinK@users.noreply.github.com>
Date: Thu, 16 May 2024 19:53:22 +0200
Subject: [PATCH] Don't bother hitting the DB if we got everything from cache.

---
 federationapi/storage/cache/keydb.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/federationapi/storage/cache/keydb.go b/federationapi/storage/cache/keydb.go
index b53695ca4..d63c889d5 100644
--- a/federationapi/storage/cache/keydb.go
+++ b/federationapi/storage/cache/keydb.go
@@ -46,6 +46,10 @@ func (d *KeyDatabase) FetchKeys(
 			delete(requests, req)
 		}
 	}
+	// Don't bother hitting the DB if we got everything from cache.
+	if len(requests) == 0 {
+		return results, nil
+	}
 	fromDB, err := d.inner.FetchKeys(ctx, requests)
 	if err != nil {
 		return results, err