What are the key considerations you would take into account when designing a system to handle a sudden spike in user traffic?

In my final year, I worked on a team project to design a student portal for our university. We anticipated that the portal would face heavy traffic during registration periods. To handle this, we proposed using load balancing to distribute traffic evenly across multiple servers. Additionally, we suggested implementing caching strategies to store frequently accessed data, reducing database load. I researched and presented options for cloud services that could scale up resources during peak times. This experience taught me the importance of planning for scalability and user experience in system design.

While volunteering at a community center, I helped organize a local event that attracted a larger crowd than expected. We had to quickly adapt our system for ticket sales, which was initially set up for a smaller audience. I suggested using an online ticketing platform that could handle a sudden influx of purchases. Moreover, we created a backup plan for manual ticket sales in case of system overload. This taught me how essential it is to prepare for unexpected spikes in traffic and how effective communication and quick thinking can mitigate potential issues.

In my first job as an IT support intern, I witnessed a situation where our company's website experienced a sudden spike in traffic due to a promotional campaign. I assisted my team in monitoring server performance and identified that the database was slowing down under the load. We recommended using a content delivery network (CDN) to improve load times and suggested optimizing images on the site. This experience highlighted for me the significance of proactive measures and teamwork in system design to ensure a smooth user experience during high demand.