Our Leaderboard has already served 1 million requests per minute, serving 250k concurrent users at its peak. As our user base grows, we expected the request pattern to grow by a much larger magnitude. So, we needed to design a system that would linearly scale as our traffic increases. It should be able to crunch gigabytes of data using distributed sorting within a SLA (Service Level Agreement) of under a minute, while maintaining strong consistency of different user views across multiple platforms. The persistent systems used should support millions of input/output operations per second, while maintaining throughput and latency under the strict SLA desired.This is done to ensure that our users have a seamless experience across platforms and devices at all times.
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