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Automatic Gzip compression on responses

Document updated on May 18, 2023

KrakenD Enterprise compresses with gzip all traffic returned to the client when the request contains an Accept-Encoding: gzip header.

This feature only talks about Gzipping responses
KrakenD understands gzipped responses from backends and decompresses them when it needs to manipulate the response. But this functionality talks about compressing all traffic back to the client.

The gzip response compression is not applied when the header is missing or when the Accept-Encoding header contains a text/event-stream value.

Gzip compression is unrelated to decompression when consuming content from your services. Decompression is also done automatically, but in all KrakenD flavors, not only Enterprise.

When the content is successfully compressed, the response contains a "Content-Encoding: gzip" header.

Double gzip compression
If your endpoints are mostly no-op, and your backend delivers the content gzipped, you should disable Gzip in KrakenD or the backend to avoid unnecessary compression.

Gzip configuration

The gzip is always on unless you disable it in the router section as follows:

{
  "version": 3,
  "extra_config": {
    "router": {
      "disable_gzip": true
    }
  }
}
Fields of "router"
* required fields
disable_gzip

boolean
Enterprise only. All the output to the end user on the Enterprise Edition uses gzip when accepted by the client. Use this flag to remove gzip compression.
Defaults to false
Scarf

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