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March 21, 2026 · 1 min read

How would you design an Express.js application to handle a large number of concurrent requests efficiently, particularly focusing on performance and scalability?

I would utilize middleware for request handling, implement load balancing by distributing traffic across multiple instances, and integrate caching strategies for frequently accessed data. Additionally, using asynchronous programming features of…

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SOFTWARE_ARCHITECT // AI_ENGINEER

📅 Mar 21, 2026 ⏱ 1 min read

HW

How would you design an Express.js application to handle a large number of concurrent requests efficiently, particularly focusing on performance and scalability?

COVER // HOW WOULD YOU DESIGN AN EXPRESS.JS APPLICATION TO HANDLE A LARGE NUMBER OF CONCURRENT REQUESTS EFFICIENTLY, PARTICULARLY FOCUSING ON PERFORMANCE AND SCALABILITY?

I would utilize middleware for request handling, implement load balancing by distributing traffic across multiple instances, and integrate caching strategies for frequently accessed data. Additionally, using asynchronous programming features of Node.js would ensure non-blocking I/O operations, enhancing overall performance.

caching express load-balancing performance scalability

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