Develop enhanced fan-out consumers with KCL 2.x - Amazon Kinesis Data Streams
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Develop enhanced fan-out consumers with KCL 2.x

Note

Kinesis Client Library (KCL) versions 1.x and 2.x are outdated. We recommend migrating to KCL version 3.x, which offers improved performance and new features. For the latest KCL documentation and migration guide, see Use Kinesis Client Library.

Consumers that use enhanced fan-out in Amazon Kinesis Data Streams can receive records from a data stream with dedicated throughput of up to 2 MB of data per second per shard. This type of consumer doesn't have to contend with other consumers that are receiving data from the stream. For more information, see Develop enhanced fan-out consumers with dedicated throughput.

You can use version 2.0 or later of the Kinesis Client Library (KCL) to develop applications that use enhanced fan-out to receive data from streams. The KCL automatically subscribes your application to all the shards of a stream, and ensures that your consumer application can read with a throughput value of 2 MB/sec per shard. If you want to use the KCL without turning on enhanced fan-out, see Developing Consumers Using the Kinesis Client Library 2.0.

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