Starting with CMCC 2401.1, blob links of the Blueprint CAE (generated by com.coremedia.blueprint.cae.handlers.TransformedBlobHandler#buildLink) are sensitive to responsive image settings. Therefore, building the link requires a transformation incl. streaming the original blob each time, because the settings may have changed. This turned out to be a severe performance issue, so we reverted this behaviour.

The drawback is that changed responsive image settings are not effective immediately, but outdated images may be rendered. However, responsive image settings are not changed frequently on production systems, so this should not be an issue in practice. You can enforce up-to-date images by restarting the CAE.

There is a configuration property delivery.image-settings-aware-etags to control the behaviour. The property has already been introduced with CMOC 2412.0 and 2406.1 with the backward compatible default value true. Now we changed the default to the recommended value false. By setting the property to true, you can preserve the settings-sensitive behaviour. This may be useful for frontend development CAEs, or if the changed behaviour causes unexpected problems and you need (temporary) backward compatibility immediately.

(CMS-27414)