Pub/Sub (Publish/Subscribe) Batch upload is a way to efficiently and reliably send multiple messages to Pub/Sub topics in a single request. This feature allows you to save network requests and improve the performance and scalability of your applications. In Pub/Sub Batch upload, you create a batch file containing all the messages you want to send. The batch file can be read as often as necessary, but once it is exhausted, only new messages are sent. Pub/Sub Batch upload is useful for processing large numbers of messages at once in real-time applications, as well as in back-end processes that process data over time.
Understand with a Use Case
Imagine you have an online shopping website where customers place orders and you have a separate system that handles order processing. When a customer places an order on the website, the website application needs to send that order information to the order processing system.
Here’s where a message queue comes in:
- The online shopping website generates a message containing the order information (like items purchased, quantity and so on).
- Instead of directly sending this message to the order processing system, the website puts the message into a message queue.
- The order processing system, acting as a consumer, retrieves messages from the queue when it’s ready to process them.
- It takes each message one by one, processes the order information (like updating inventory, generating invoices and so on) and completes the order processing.
- By using a message queue, the website and the order processing system can work independently and at their own pace. The website need not wait for the order processing system to finish processing one order before it can handle the next order. Similarly, the order processing system can process orders as quickly as it can without being dependent on the website.
This asynchronous processing facilitated by the message queue allows for efficient and scalable handling of orders, ensuring smooth operation even during peak times when there’s a high volume of orders coming in. Last modified on February 26, 2026
