# Technical scenarios

* [Clearing the memory before loading data to it in case an iterator exists in the same subJob](https://help.qlik.com/talend/r/en-US/7.3/components/technical/thashoutput-thashinput-tfixedflowinput-tlogrow-clearing-memory-before-loading-data-to-it-in-case-iterator-exists-in-same-subjob-standard-component-in-this)
* [Reading data from the cache memory for high-speed data access](https://help.qlik.com/talend/r/en-US/7.3/components/technical/thashoutput-thashinput-tfixedflowinput-tfileoutputdelimited-reading-data-from-cache-memory-for-high-speed-data-access-standard-component-the)