How do you ensure the security and scalability of a backend system?

Question

Accepted Answer

Ensuring backend security and scalability involves implementing best practices in architecture, coding, and infrastructure management.

Implement authentication and authorization mechanisms (e.g., OAuth, JWT) to secure APIs.
Use HTTPS to encrypt data in transit and protect against man-in-the-middle attacks.
Regularly update dependencies and libraries to patch known vulnerabilities.
Employ rate limiting and throttling to prevent abuse and ensure fair resource allocation.
Utilize load balancers to distribute traffic evenly across servers, enhancing scalability.
Implement caching strategies (e.g., Redis, Memcached) to reduce database load and improve response times.
Design a microservices architecture to allow independent scaling of different components.

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