public class AcceptGzipEncodingFeignRequestInterceptor implements RequestInterceptor {

    private static final String ACCEPT_ENCODING_HEADER = "Accept-Encoding";

    private static final String GZIP_ENCODING = "gzip";

    private static final String DEFLATE_ENCODING = "deflate";

    @Override
    public void apply(RequestTemplate template) {

        if(!template.headers().containsKey(ACCEPT_ENCODING_HEADER)) {
            template.header(ACCEPT_ENCODING_HEADER, GZIP_ENCODING, DEFLATE_ENCODING);
        }
    }
}