When does hcache not need to be rebuilt?

The correct choice indicates that hcache does not need to be rebuilt when no new logs are received. This is because hcache is a caching mechanism that stores data about logs to facilitate faster access and analysis. When there are no new logs coming into the system, there is no need for the cache to be updated or rebuilt since the existing data remains relevant and sufficient for reporting and analysis tasks.

In scenarios where all logs have already been analyzed or when reports are being exported or generated, the hcache may still need to be rebuilt to ensure that any changes or new insights from the data are captured. However, if there are simply no new logs being received, the existing cache remains intact and usable, thus not requiring any rebuilding efforts. This helps in maintaining efficiency and performance within the system without unnecessary processing.