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Allow your applications to access real-time data changes
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MongoDB & Node.js: Change Streams & Triggers (Part 4 of 4)

✅ Sign-up for a free cluster at: https://mdb.link/free-9LA7_CSyZb8 ✅ Get help on our Community Forums: https://mdb.link/community-9LA7_CSyZb8 When you need to react immediately to changes in your MongoDB database, change streams and triggers can help you make that happen. In part four of this quick start tutorial for beginners, Lauren Schaefer explains three ways to monitor change streams in a Node.js script: using EventEmitter's on(), using ChangeStream's hasNext(), and using Node's Stream API. She also explains how to create triggers in MongoDB Atlas. Chapters: 00:00 Intro 00:57 Change Streams 03:52 Monitoring Change Streams Using EventEmitter's on() 12:21 Monitoring Change Streams Using ChangStream's hasNext() 16:37 Monitoring Change Streams Using the Stream API 19:57 Resuming Change Streams 21:43 Triggers 27:16 Wrapping Up Links Lauren mentions in the video: Lauren's blog post: Change Streams & Triggers with Node.js Tutorial https://developer.mongodb.com/quickstart/nodejs-change-streams-triggers Lauren's GitHub repo with the code from this video https://github.com/mongodb-developer/nodejs-quickstart/blob/master/changeStreams.js Node.js & MongoDB Starter Template File https://github.com/mongodb-developer/nodejs-quickstart/blob/master/template.js Other videos in this tutorial series: Part 1: https://youtu.be/fbYExfeFsI0 Part 2: https://youtu.be/iz37fDe1XoM Part 3: https://youtu.be/bdS03tgD2QQ Connect with Lauren: Twitter: https://twitter.com/lauren_schaefer​ TikTok: https://tiktok.com/@lauren_schaefer​ Linkedin: https://www.linkedin.com/in/laurenjan...​ MongoDB Community: https://developer.mongodb.com/community/forums/t/hey-friends-im-lauren/168/ Subscribe to MongoDB ►►► https://bit.ly/3bpg1Z1 Connect with MongoDB: Website: https://bit.ly/2LjtNBZ Twitter: https://bit.ly/3fH87gR Facebook: https://bit.ly/3fEaIsd Linkedin: https://bit.ly/2SY9w90 Instagram: https://bit.ly/3bn9bDv Community Forums: https://bit.ly/2I8VCi5 TikTok: https://bit.ly/3fHoqdJ...
Node.jsMongoDBChange StreamsJavaScript

May 21, 2021 | 29 min
Article

Real-Time Location Updates with MongoDB Stitch, Change Streams, and Mapbox

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Feb 03, 2023 | 5 min read
Tutorial

Subscribe to MongoDB Change Streams Via WebSockets

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Sep 23, 2022 | 3 min read
All Change Streams Content
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Tutorial

Using MongoDB Atlas Triggers to Summarize Airbnb Reviews with OpenAI

Uncover the synergy of MongoDB Atlas triggers and OpenAI models in real-time analysis and summarization of Airbnb reviews. ...
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Oct 31, 2023 | 4 min read
Pavel Duchovny
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Adding Real-Time Notifications to Ghost CMS Using MongoDB and Server-Sent Events

Learn how to work with MongoDB change streams and develop a server-sent event application that integrates with Ghost CMS....
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Aug 14, 2023 | 7 min read
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Article

Using MongoDB Change Streams in Java

Change streams are an API that allows the user to subscribe to their application to any change in collection, database, or even on the entire deployment. There is no middleware or data polling action to be initiated by the user to leverage this event-driven, real-time data capture feature. Learn how to use change streams with Java in this article. ...
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Apr 04, 2023 | 6 min read
Rajesh S Nair
Tutorial

Real-Time Location Tracking with Change Streams and Socket.io

In this article, you will learn how to use MongoDB Change Streams and Socket.io to build a real-time location tracking application. To demonstrate this, we will build a local package delivery service. ...
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Feb 09, 2023 | 8 min read
Ashiq Sultan
Quickstart

Working with Change Streams from Your Swift Application

Change streams let you run your own logic when data changes in your MongoDB collections. This post shows how to consume MongoDB change stream events from your Swift app....
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Jan 25, 2023 | 4 min read
Andrew Morgan
Tutorial

Create a Data Pipeline for MongoDB Change Stream Using Pub/Sub BigQuery Subscription

Learn how to set up a data pipeline from your MongoDB database to BigQuery using change streams and Google Cloud Pub/Sub....
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Oct 28, 2022 | 5 min read
Venkatesh Shanbhag (+1)
Tutorial

Real Time Data in a React JavaScript Front-End with Change Streams

In many applications nowadays, you want data to be displayed in real-time. Whether an IoT sensor reporting a value, a stock value that you want to track, or a chat application, you will want the data to automatically update your UI. This is possible using MongoDB Change Streams with the Realm Web SDK....
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Oct 04, 2022 | 6 min read
Joel Lord
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MongoDB Change Streams with Python

Change streams allow you to listen to changes that occur in your MongoDB database....
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Feb 05, 2022 | 9 min read
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Discover how to react to changes in your MongoDB database using change streams implemented in Node.js and Atlas triggers....
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Feb 04, 2022 | 17 min read
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Go beyond CRUD with these 3 special features of MongoDB!...
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