Nosto runs both partial updates to update products and related data within just a few minutes and also full re-indices. The following table shows how different parts are being updated:
| What is being updated | When it's being updated | 
| Adding new products | Within minutes | 
| Updating existing products | Within minutes | 
| Performance metrics / stats based fields | On full re-index | 
| Changing merchandising rules | Within minutes | 
| Adding new synonyms | Within minutes | 
| Adding facets from indexed fields | Within minutes | 
| Adding facets from new data fields | On full re-index | 
| Updating Out-of-stock behaviour | On full re-index | 
| Deleting SKUs | On full re-index | 
| Changing searchable fields | On full re-index | 
| Adding new indexed fields | On full re-index | 
| Changing autocomplete keywords | On full re-index | 
| Adding redirects | On full re-index | 
| Adding data extractors | On full re-index | 
| Changing result grouping settings | On full re-index | 
| Changing region or language | On full re-index | 
| All other config changes | Within minutes | 
Nosto runs a full catalog re-index every 6 hours with this schedule:
| Sync start (UTC time) | Approx sync finish (UTC time) | 
| 00:30 | 03:00 - 04:00 | 
| 06:30 | 09:00 - 10:00 | 
| 12:30 | 15:00 - 16:00 | 
| 18:30 | 21:00 - 22:00 | 
To convert time easily to your timezone, you can use https://www.worldtimebuddy.com/
Initial setup
Once your Nosto Search and/or Category Merchandising (Universal) module is enabled, product data will take up to 12 hours to fully sync. Every subsequent re-index runs every 6 hours as shown in the table above.
Exclusion logic updates
The exclusion logic is being updated in three different scenarios:
- When changing the global setting (e.g. hide excluded products), it will reflect in Nosto's Search within a few minutes. 
- Changing the exclusion logic for certain products is reflected within a few minutes. 
- Brand, category and tag based exclusions will be reflected during the next full catalog re-index. 

