Develop KCL 1.x consumers

Important

Amazon Kinesis Client Library (KCL) versions 1.x and 2.x are outdated. KCL 1.x will reach end-of-support on January 30, 2026. We strongly recommend that you migrate your KCL applications using version 1.x to the latest KCL version before January 30, 2026. To find the latest KCL version, see Amazon Kinesis Client Library page on GitHub. For information about the latest KCL versions, see Use Kinesis Client Library. For information about migrating from KCL 1.x to KCL 3.x, see Migrating from KCL 1.x to KCL 3.x.

You can develop a consumer application for Amazon Kinesis Data Streams using the Kinesis Client Library (KCL).

For more information about KCL, see About KCL (previous versions).

Choose from the following topics depending on the option you want to use.

Contents

• Develop a Kinesis Client Library consumer in Java

• Develop a Kinesis Client Library consumer in Node.js

• Develop a Kinesis Client Library consumer in .NET

• Develop a Kinesis Client Library consumer in Python

• Develop a Kinesis Client Library consumer in Ruby