Hello 🙂

Spring-data-mongodb supports TimeSeries since version 3.3. It allows to declare and create new timeseries collection. The @TimeSeries annotation offers many parameters such as those which are in the sub-object timeseries, (timeField, metaField and granularity). But there is no support for a field that comes with the TimeSeries arrival which is expireAfterSeconds (time series collections).

Regarding the code the CollectionOptions class, there is no field corresponding to expireAfterSeconds. Then if we want to create a time series with automatic expiration period, we must bypass the Spring classes and annotations (that's sad 🙁).

Is a support for the expireAfterSeconds planned for @TimeSeries? If not, I suggest to add the option to @TimeSerie annotation only. As mentionned in documentation:
expiredAfterSeconds

Optional. Enable the automatic deletion of documents in a time series collection by specifying the number of seconds after which documents expire. MongoDB deletes expired documents automatically.

(therefore, I don't understand why this option is not part of timeseries sub-object...)

I hope this proposal will interest you
Regards