In which order will these records be processed?
Lambda will receive each record in the reverse order it was placed into the stream following a LIFO (last-in, first-out) method.
Lambda will receive each record in the exact order it was placed into the stream following a FIFO (first-in, first-out) method.
Lambda will receive each record in the exact order it was placed into the shard following a FIFO (first-in, first-out) method. There is no guarantee of order across shards.
The developer can select FIFO (first-in, first-out), LIFO (last-in, first-out), random, or request specific record using the getRecords API.
Explanations:
Amazon Kinesis processes records in the order they are placed in the stream, not in reverse (LIFO).
Kinesis does not guarantee strict FIFO ordering for records across shards.
Kinesis guarantees order within a shard, and records are processed in the order they are placed into each shard. However, there is no order guarantee across multiple shards.
Kinesis does not provide FIFO, LIFO, or random processing options via the getRecords API. The order is determined by shard and record arrival time.