[hintymad]

Real-time analytics for human is not that useful. Human can't make decisions and take actions in minutes anyway, let alone seconds. A notable exception can be log analytics for operations, but I'd argue in that case throughput is more more important than a few seconds of latency. Case in point, CloudWatch Insights can consistently drive about 1GB/s of log scan. It's good enough for log search in practice.

On the other hand, real-time analytics for machines can be critical to a business, which is why Yandex built Clickhouse and ByteDance deployed more than 20K nodes of Clickhouse.

Just like using any technology, we need to figure out what problems we solve for real-time analytics first.