Enhanced Fan-Out (Kinesis Data Streams)

What it is: A feature that provides dedicated read throughput per consumer for a Kinesis stream.

What it’s for:

• Support multiple consumers reading in parallel without competing for shared read throughput.
• Reduce read contention when many consumers need low-latency access.

Key ideas:

• Without enhanced fan-out, consumers may share read capacity.
• With enhanced fan-out, each consumer gets dedicated throughput (better isolation).

Exam cues:

• “many consumers, low latency, avoid consumers throttling each other” → Enhanced Fan-Out.

Hard words:

• *dedicated* /ˈdedɪkeɪtɪd/: riêng biệt/chuyên dụng
• *contention* /kənˈtenʃn/: tranh chấp tài nguyên
• *latency* /ˈleɪtənsi/: độ trễ
• *isolation* /ˌaɪsəˈleɪʃn/: cô lập