Change streams allow applications to access real-time data changes without the complexity and risk of tailing the oplog. Applications can use change streams to trigger microservices and notifications.
MongoDB Change Streams
Subscribe to real-time database modifications without polling.
Key Takeaways: MongoDB Change Streams
Mastering MongoDB Change Streams helps you write clean and reliable MongoDB code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
MongoDB Change Streams Code Example
MongoDBconst collection = db.collection("orders");
const changeStream = collection.watch([{ $match: { "operationType": "insert" } }]);
changeStream.on("change", (next) => {
console.log("New order inserted:", next.fullDocument);
});Output
Triggers handler in real time when new order is created
Run this example on your own computer. The "Get Started" lesson shows how to set it up.
Finished this lesson?
Mark it complete to track your progress.
Stuck on something?
Ask the community in the CodesInTech forum.
Need a developer?
Learning on your own is great — and when you need professional help, our team builds custom software, websites and mobile apps for clients worldwide.
Explore Our Services