What are the key factors you would consider when designing a highly available system?

In college, I worked on a group project to develop a student portal aimed at improving communication between students and faculty. To ensure high availability, we implemented a simple server architecture with redundancy. For instance, we used two servers to host our application, ensuring that if one server went down, the other would still handle requests. We also integrated a load balancer to distribute incoming traffic, which helped manage peak times during registration periods. By conducting regular tests and monitoring system performance, we ensured that the portal remained accessible, showcasing the importance of planning for availability right from the design phase.

While volunteering to organize a community event, I faced the challenge of managing a registration system that needed to handle varying loads as attendees signed up. I decided to use a cloud-based form tool that automatically scaled based on the number of users accessing it. This tool allowed us to ensure high availability, as it could handle sudden spikes in registration without crashing. Additionally, I set up a backup plan with a secondary form in case of technical issues, demonstrating how thinking ahead can create a safety net and ensure that our event went smoothly and attendees could register without frustration.

In my first job at an e-commerce startup, I was involved in maintaining the website's uptime during major sales events. We focused on implementing high availability by using multiple servers and a content delivery network (CDN) to distribute traffic efficiently. I learned the importance of monitoring tools that alerted us to any downtime so we could respond quickly. During one busy sale, our team’s proactive measures paid off, as we managed to handle over 10,000 visitors simultaneously without any service interruptions, reinforcing the value of a robust design in ensuring customer satisfaction.