Client-side SDK and Server-side SDK

One great aspect about Hackle is that we offer many different SDKs for seamless integration. From client-side to server-side, we have everything covered for you.
This article describes the differences between client and server-side SDKs and helps you decide which type of SDK to install and use depending on your needs.

Client-side SDK

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SDK functions run on the user's device, such as a web browser or mobile app, and the user's device communicates directly with the Hackle server.

We recommend using the client-side SDK in the following cases:

  • When you are distributing traffic into test groups corresponding to each variant within an A/B test. (ex: changes in visual elements such as button color, layout changes, etc.)
  • When you need to track and send user events such as clicks, scrolls, etc. that are performed on the client-side without communication with the server.
  • When the logic is centered around the client-side

Server-side SDK

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The SDK's functions run on the server, and communication between server-to-server is possible.

We recommend using the server-side SDK in the following cases:

  • When distributing traffic into test groups corresponding to each variant within an A/B test to experiment with changes made in the backend system, such as improving the search algorithm or changing the recommendation logic.
  • When sending event information on the status of a user that is determined from the server-side. (ex: membership registration, purchase completion, etc.)

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