Node.js’s asynchronous nature influences its approach to security-related operations, such as authentication calls to databases or token verification, which are non-blocking and event-driven by design. Python and Java, traditionally synchronous, require either multi-threaded or async frameworks (e.g., asyncio in Python, or reactive programming in Java with frameworks like Spring WebFlux) to efficiently handle concurrent authentication requests. This difference affects scalability and the structure of security code.
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