From d6f439157d27e1d1eb821802a91be909df85a3d3 Mon Sep 17 00:00:00 2001
From: Sean Zellmer <sean@lejeunerenard.com>
Date: Tue, 19 May 2026 14:11:14 -0500
Subject: [PATCH] Limit # of peers used in non-primary update

Reduces messages while still allowing ranges etc to be bumped with
random peers.
---
 lib/replicator.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/replicator.js b/lib/replicator.js
index 369a6f08..a6e17ec7 100644
--- a/lib/replicator.js
+++ b/lib/replicator.js
@@ -47,6 +47,7 @@ const DEFAULT_MAX_INFLIGHT = [16, 512]
 const SCALE_LATENCY = 50
 const NOT_DOWNLOADING_SLACK = (20000 + Math.random() * 20000) | 0
 const MAX_PEERS_UPGRADE = 3
+const MAX_PEERS_NON_PRIMARY = 50
 const LAST_BLOCKS = 256
 
 const MAX_RANGES = 64
@@ -3039,10 +3040,13 @@ module.exports = class Replicator {
       return
     }
 
+    let tries = 0
     for (const peer of peers.restart()) {
+      if (tries >= MAX_PEERS_NON_PRIMARY) break
       if (this._updatePeerNonPrimary(peer) === true) {
         peers.requeue()
       }
+      tries++
     }
 
     this._checkUpgradeIfAvailable()