Ravi Sir's Cards › AWS
Safe stream consumers
This revision card explains Safe stream consumers. It starts from the need that poison events and write-loops stall shards. It describes idempotent on eventID/keys, DLQ, no unmarked write-back loops. The how-to section notes build handler , then DLQ , then alarm , then prove replay , then disable in lab. An example on the card is kenji Watanabe refuses production Streams without a DLQ ticket.
Read card text
What this card says
Why do we need it?
Poison events and write-loops stall shards.
What is it?
Idempotent on eventID/keys, DLQ, no unmarked write-back loops.
IteratorAge
How to do it
Build handler → DLQ → alarm → prove replay → disable in lab.
Example
Kenji Watanabe refuses production Streams without a DLQ ticket.