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Tips & Tricks
- SFS instances are treadthread-safe. So, the same instance can be shared among many threads like IndexReader
- SFS should only be created when an IndexReader is opened/reopened. Creation with every search can be performance killer
- Iterating over the thousands of results(e.g, 1000 facets x 25 Hits per facet) can be too costly. The old trick can be used here too, "just show the hit counts, and make a new search when user clicks a category".
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