From 01c46a2350e25829ebac4bf152a7d0829d620a61 Mon Sep 17 00:00:00 2001
From: Alexandre Choura <42672104+PROFeNoM@users.noreply.github.com>
Date: Tue, 12 Mar 2024 04:49:02 +0100
Subject: [PATCH] perf: Re-use empty resource instance (#1251)

---
 src/SDK/Resource/ResourceInfoFactory.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/SDK/Resource/ResourceInfoFactory.php b/src/SDK/Resource/ResourceInfoFactory.php
index 7fc80bcd9..507d967de 100644
--- a/src/SDK/Resource/ResourceInfoFactory.php
+++ b/src/SDK/Resource/ResourceInfoFactory.php
@@ -17,6 +17,8 @@ class ResourceInfoFactory
 {
     use LogsMessagesTrait;
 
+    private static ?ResourceInfo $emptyResource = null;
+
     public static function defaultResource(): ResourceInfo
     {
         $detectors = Configuration::getList(Env::OTEL_PHP_DETECTORS);
@@ -90,6 +92,10 @@ public static function defaultResource(): ResourceInfo
 
     public static function emptyResource(): ResourceInfo
     {
-        return ResourceInfo::create(Attributes::create([]));
+        if (null === self::$emptyResource) {
+            self::$emptyResource = ResourceInfo::create(Attributes::create([]));
+        }
+
+        return self::$emptyResource;
     }
 }