Facilitation of reclaiming of storage space is enabled relative to one or more data streams employing the storage space. A system can comprise a processor, and a memory that stores computer executable instructions that, when executed by the processor, facilitate performance of operations. The operations can comprise determining posting or non-posting of one or more specified cut positions from readers of events thus far appended to a stream of a stream storage system. The operations can further comprise, in response to the one or more specified cut positions being posted, truncating the stream based on the specified cut positions of the stream, and, in response to no specified cut positions being posted, truncating the stream based on a time limit or a space limit relative to a respective time quantity or a respective space quantity of the stream.