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The age of SPAs, or single-page applications, has dawned. Everywhere we look, seamless user experiences and dynamic content loading take the forefront. However, such power and efficiency come with its fair share of challenges—especially in security.

SPAs have revolutionized the way users interact with web applications. With faster transitions, reduced server load, and a smoother user experience, it’s easy to understand their rising popularity. But, as developers, we must ensure that the backend, especially session management, matches this frontend finesse.

Understanding Session Management in SPAs

Imagine sessions as passports—each stamped entry represents a valid visit. Web applications rely on these “stamps” to recognize and personalize user interactions.

The shift from traditional applications to SPAs has upturned our approach to session management. While traditional apps rely heavily on server-side rendering and can manage sessions server-side, SPAs primarily use APIs, making session management a nuanced task.

Code snippet:

// Simple SPA session initialization after user login
let userSession = {