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Articles tagged with #chaicode
Note: This article discusses architectural patterns commonly used across large-scale social media platforms. It uses Instagram as a practical reference point, not as a source of proprietary insider kn
You open WhatsApp while underground on the subway. The signal drops to nothing. You type a message and press send. The message immediately appears in the chat with a single grey checkmark. No error. N
If you have ever built a React Native app with more than three or four screens, you know exactly how the complexity creeps in. You start simple: a home screen, a profile screen, maybe a settings page.
Where Uploaded Files Are Stored When a file is uploaded to an Express server using Multer, the file data arrives as a stream in the request body. Multer reads that stream and either writes the file to
What Authentication Means Authentication is the process of verifying that a user is who they claim to be. Before a server grants access to protected resources, it needs to confirm the identity of the
What Sessions Are A session is a server-side record that tracks the state of a user across multiple HTTP requests. Because HTTP is stateless by design, each request from a client is independent with n
