From 867a674d6d9cbbf9ee189be76f7a17240e61880e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Pedro=20Monteiro=20Morgado=20Dias?=
 <joao.dias@ably.com>
Date: Wed, 4 Sep 2024 16:41:58 +0100
Subject: [PATCH] Change cursors batch time formula on presence update

---
 src/Cursors.test.ts | 4 ++--
 src/Cursors.ts      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Cursors.test.ts b/src/Cursors.test.ts
index 383f4ae8..1f0c8802 100644
--- a/src/Cursors.test.ts
+++ b/src/Cursors.test.ts
@@ -116,7 +116,7 @@ describe('Cursors', () => {
       vi.spyOn(channel.presence, 'get').mockImplementation(createPresenceCount(2));
       await cursors['onPresenceUpdate']();
       expect(batching.shouldSend).toBeTruthy();
-      expect(batching.batchTime).toEqual(50);
+      expect(batching.batchTime).toEqual(25);
     });
 
     it<CursorsTestContext>('batchTime is updated when multiple people are present', async ({
@@ -126,7 +126,7 @@ describe('Cursors', () => {
     }) => {
       vi.spyOn(channel.presence, 'get').mockImplementation(createPresenceCount(2));
       await cursors['onPresenceUpdate']();
-      expect(batching.batchTime).toEqual(50);
+      expect(batching.batchTime).toEqual(25);
     });
 
     describe('pushCursorPosition', () => {
diff --git a/src/Cursors.ts b/src/Cursors.ts
index 7548f463..145e8379 100644
--- a/src/Cursors.ts
+++ b/src/Cursors.ts
@@ -105,7 +105,7 @@ export default class Cursors extends EventEmitter<CursorsEventMap> {
     const channel = this.getChannel();
     const cursorsMembers = await channel.presence.get();
     this.cursorBatching.setShouldSend(cursorsMembers.length > 1);
-    this.cursorBatching.setBatchTime(cursorsMembers.length * this.options.outboundBatchInterval);
+    this.cursorBatching.setBatchTime(Math.ceil(cursorsMembers.length / 100) * this.options.outboundBatchInterval);
   }
 
   private isUnsubscribed() {