What is Salesforce Streaming API?
Salesforce Streaming API provides an efficient way to stream events in near real-time through push technology. It offers a subscription mechanism that allows you to receive different types of events, including PushTopic events, generic events, platform events, and Change Data Capture events.
Where is Salesforce Streaming API Used?
Salesforce Streaming API is ideal for scenarios where you need to keep your external source synchronized with Salesforce data. It supports PushTopic events and Change Data Capture events, enabling you to process business logic in an external system in response to data changes in Salesforce. Additionally, it allows you to broadcast custom notifications with platform events and generic streaming.
How Does Salesforce Streaming API Work?
Salesforce Streaming API utilizes a publisher-subscriber (pub/sub) model to push data to the client. The first step is to set up a PushTopic in Salesforce, which defines the query that tracks changes in specific fields of a Salesforce Object. The client can then subscribe to the PushTopic and receive updates whenever a change occurs in the specified fields. This is achieved using the Bayeux protocol, a push protocol. Unlike traditional polling, Salesforce Streaming API employs long polling connections, keeping a request open until an event is triggered and then sending the response.
Real-Time Application: Live Flight Tracking with Salesforce Streaming API
The aviation industry, particularly the Air Traffic Management (ATM) sector, is embracing modernization, with an abundance of commercial and authoritative aviation data becoming available. However, accessing this data can be challenging due to different formats and technologies. Salesforce Streaming API simplifies this process by providing easy-to-use APIs, enabling users to leverage the value of data within innovative applications tailored to meet the needs of various stakeholders in the ATM industry.
REST API vs. Streaming API
There are two primary ways to access harmonized aviation data: REST API and Streaming API. REST API follows a request-response pattern, where the user makes individual requests for specific information and receives a single response. It is suitable for scenarios where data snapshots are sufficient and don’t require frequent updates.
On the other hand, Streaming API maintains a persistent connection that continuously sends updated data to the user until the connection is terminated. It is ideal for scenarios where users need to consume rapidly updating live data. Streaming API excels at providing low latency access to live real-time information.
Example: Interactive Visualforce Page Without Replay
An interactive Visualforce page can be developed to demonstrate the capabilities of Streaming API. By subscribing to PushTopic events, this example shows how to receive real-time notifications and display them on the page. To implement this, you’ll need to create an object, set up a PushTopic, and create the necessary static resources and Visualforce page. Detailed instructions can be found here.
Salesforce Streaming API empowers businesses to integrate real-time event streaming into their applications. It provides a robust subscription mechanism and supports different types of events. Whether you need to keep external sources in sync with Salesforce data or broadcast custom notifications, Salesforce Streaming API offers a reliable and efficient solution.
ProgramMatek is dedicated to providing innovative solutions for businesses, leveraging cutting-edge technologies like Salesforce Streaming API.