Ravi Sir's Cards › AWS
Hourly rollup
This interview card covers Hourly rollup. Sync aggregate in API path slows ingest. Streams/worker upserts ROLLUP#yyyyMMddHH idempotently. Paper worker , then Put rollup , then Query chart , then replay DLQ story.
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What this card says
What it is
Sync aggregate in API path slows ingest.
Why it matters
Streams/worker upserts ROLLUP#yyyyMMddHH idempotently.
ROLLUP#
How / example
Paper worker → Put rollup → Query chart → replay DLQ story.
MNC CDC story.