Effective Strategies for Real-Time Updates in Web Services
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Chapter 1: Understanding User Needs for Real-Time Updates
When developing a backend service using SpringBoot paired with a React frontend, one common scenario arises: a user purchases a football ticket. After completing the transaction, they are eager to know whether their ticket has been delivered. As a developer, it's essential to address this functional requirement effectively.
Imagine this scenario:
- The user makes a payment, and the backend promptly confirms the transaction, providing a reassuring success message. The user feels relieved.
- However, they now anticipate immediate confirmation of their ticket but receive no instant feedback from the system.
- Concerned, they start refreshing the page repeatedly, hoping for an update on their ticket status. Each refresh brings them back to the same pending message, leading to mounting frustration.
- As the need to check for updates becomes a tiresome chore, the user’s trust in the system begins to dwindle.
The main issue here is that the website lacks a design that allows for manual refreshes. So, how can we address this functional requirement in system design?
Section 1.1: The Importance of Real-Time Status Updates
Real-time updates are vital for users to monitor their transactions and interactions with web services.
Short Answer:
We will delve into three effective strategies to implement real-time status updates, illustrated through the example of a payment process.
Subsection 1.1.1: Strategies for Implementation
- Exponential Backoff Requests: This method enables the frontend to make repeated requests to the backend when the backend system is not under the developer's control.
- Long Polling: Utilizing asynchronous, callable deferred APIs from the backend allows for efficient communication without constant refreshing.
- WebSocket Requests: This technology enables a persistent connection, facilitating real-time updates directly to the user.
In the upcoming articles, I will analyze the pros and cons of each method and provide code examples using React for the frontend and SpringBoot for the backend.
Chapter 2: Enhancing User Experience
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