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1. We can provide a web-filter, for Gzip compression by configuring play.filters.gzip.GzipFilter.
2. During object constructor,we can further customize it to perform the encryption based on parameters available in request/response object.
3. We will only compress the data if response size is greater than configured threshold. Default will be provided, which can be over-ridden by user through updating the environment variable.
4. Variable name will be sunbird_gzip_encryption_threshold
5. We need to return GzipFilter object as one of the values in array returned from filters function, from the class that implements HttpFilters.

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public class Filters implements HttpFilters {

    @Inject
    GzipFilter gzipFilter;

    public EssentialFilter[] filters() {
        return new EssentialFilter[] { gzipFilter };
    }
}

We can also pass a function - while constructing gzipFilter, to tweak when to compress the data based on request/response parameter.

(RequestHeader req, ResponseHeader resp) -> {
   return (resp.headers().get("Content-Length") > configuredLimit*1000);
  }

Advantages:

1. Response size will be considerably smaller and will use less band-width.

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