From 16a028944228e1aae25e2391c9419c84a646da98 Mon Sep 17 00:00:00 2001
From: Thibault Duplessis <t@lichess.org>
Date: Sat, 20 Jul 2024 13:16:11 +0200
Subject: [PATCH] possibly faster mongodb `exists` with count limit=1

---
 src/main/scala/Mongo.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/Mongo.scala b/src/main/scala/Mongo.scala
index 8673a3a3..09efd424 100644
--- a/src/main/scala/Mongo.scala
+++ b/src/main/scala/Mongo.scala
@@ -287,7 +287,7 @@ final class Mongo(config: Config)(using Executor) extends MongoHandlers:
     coll
       .count(
         selector = Some(selector),
-        limit = None,
+        limit = Some(1),
         skip = 0,
         hint = None,
         readConcern = ReadConcern.Local