Differences between MongoDB Realm Triggers and Change Streams in Node.js

NoSQL database MongoDB offers different methods to track and act on changes that occur in the data. MongoDB Realm Triggers and Change Streams are among the most unique methods of using MongoDB. They are useful for responding to changes in data and are quite dissimilar in terms of their structure, applications, and deployment. In this article, we will discuss the difference between MongoDB Realm Triggers and Change Streams in Node.js. Before discussing their differences, we must know about the MongoDB Realm Triggers and Change Streams.

What are the MongoDB Realm Triggers?

Realm Triggers are functions that are performed on the MongoDB Realm automatically in response to certain occurrences in the database. These triggers belong to MongoDB Realm, a serverless architectural approach designed to work with MongoDB Atlas in creating applications.

Key Characteristics:

There are several key characteristics of MongoDB Realm Triggers. Some main characteristics are as follows:

• Serverless Execution: Realm Triggers work on MongoDB Serverless, which means that developers will not be required to manage servers.
• Event Types: A trigger can be set on events like an insert, update, delete, or even any change that takes place in the database.
• Integration with MongoDB Realm: These triggers are strongly coupled with MongoDB Realm, allowing to development of reactive applications.

Use Cases:

Several use cases of MongoDB Realm Triggers are as follows:

• Real-time Notifications: It reminds the user when a new document has been inserted into the database.
• Data Validation: It maintains data accuracy through data validation or data conversion while the data is still to be written into a database.
• Automated Workflows: Special operational functions that are initiated to perform other actions if specific conditions relative to the database contents are encountered.

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What are the MongoDB Change Streams?

MongoDB Change Streams allow continuous monitoring of database changes by using the MongoDB oplog an operation log. Change Streams are MongoDB features through which applications can subscribe to the changes occurring in a collection, database, or even the whole instance.

Key Characteristics:

Several characteristics of MongoDB Change Streams are as follows:

• Persistent and Reliable: Change Streams is primarily a long-term useful way of tracking changes within your database.
• Event Types: These record all types of events that may be inserts, updates, deletes, and replacements amongst others.
• Flexibility: The information from the traditional use of Mongo DB can clearly show that Change Streams do not necessarily have to be used in conjunction with MongoDB Realm and can be implemented in any type of environment that utilizes Mongo DB such as having Mongo DB self-hosted.

Use Cases:

Several use cases of MongoDB Change Streams are as follows:

• Real-time Analytics: It nonitors the shift in your data to reflect the update on the dashboard or others in real-time.
• Data Replication: Mirror changes made in one or more databases or systems with another.
• Audit Logging: It maintains security and audit compliance by tracking modifications made to important databases.

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Key differences between Mongo DB Realm triggers and change streams in Node.js:

There are several key differences between MongoDB Realm Triggers and Change Streams in Node.js. Some main differences are as follows:

Choosing Between Realm Triggers and Change Streams

• Use Realm Triggers when we are looking for serverless, handled by MongoDB Realm Scope solution. It is best suited for those applications where the response time is important and requires minimal setup.
• If we need more control over the environment, or if we are monitoring MongoDB deployment excluding MongoDB Realm, use Change Streams. It is well suited for current data processing, analytics, and systems where a lot of data is updated frequently.

Conclusion:

In conclusion, MongoDB Realm Triggers and Change Streams are both great for handling change in our MongoDB database. Realm Triggers are better for developers who want a fully serverless solution, while Change Streams offer a more customizable experience in a self-hosted one. When we are aware of the differences and the utilization, we will know what particular tool to use in the Node.js applications.