I often experience a delay when I search in my application. This is because nothing is indexed when the data is reloaded unless we force it.

CreateSearchIndexOnReload does just that. Every time we reload the script, Qlik Sense will generate search index files. If nothing is specified, the index is created after the user performs the first search.

One thing to consider is the longer script execution time due to the index file creation process.

To set this to on, set the variable to 1, as shown in the following code block:

set CreateSearchIndexOnReload=1; 

I recommend setting CreateSearchIndexOnReload in those applications which need to reload fast, or in on-demand applications, near real-time applications, and in those applications with write-back functionality which require you to reload after you have updated a record.