To provide accurate and valuable recommendations for Optimizely Product Recommendations, export your catalog to the Product Recommendations engine on a regular basis. You should schedule the export job to run every 24 hours.
For products to be exported, they must have the following information. If a product is missing any of the information in the list, the export ignores the product.
have prices (and that they are valid and not out of date)
products have variants
You can change the export behavior with a custom implementation of the ICatalogItemFilter and ICatalogFeedJob interfaces.
You can also attach a log for the appropriate namespace for debugging.
To export a catalog, start your site, enter admin mode, and launch the **Export Product Feed** scheduled job. If the job finishes with a successful status, your catalog was successfully exported.
The scheduled job has two parts:
Serialize the catalog to XML, compress it, and store it as a blob.
Notify Product Recommendations that a new catalog is available.
To notify Product Recommendations that a new catalog export is available, the scheduled job calls the Product Recommendations REST API (via HTTPS) and passes a callback address and an authorization token. When the Product Recommendations engine has the resources to handle downloading the catalog, it calls the specified callback method and passes the token. If the callback method determines that the passed token is valid, the download is allowed.
The callback address is formulated using SiteDefinition.SiteUrl as the host and a static path. It is recommended that the SiteUrl be set to use the HTTPS protocol.
## Incremental export of the catalog feed
Personalization Commerce version 3.2.7 introduces a scheduled job that exports added/updated products only: **Export Catalog Feed Incrementally**. This job keeps Optimizely Personalization updated with product changes without exporting the entire catalog. Because the job exports fewer products, it runs more quickly and provides better performance than the full **Export Catalog Feed** job. But, the incremental job does not replace the **Full Export Catalog Feed** job because it does not include the deletion of products nor edits to asset or inventory information.
By default, a maximum of 10,000 products are processed when the **Export Catalog Feed Incrementally** job runs. You can increase the maximum number of products via the second setting below.
### Export Catalog Feed Incrementally job settings
These _web.config_ settings let you modify the **Export Catalog Feed Incrementally** scheduled job.
|**episerver:commerce.EnableEventDrivenCatalogFeed**||Indicates if Optimizely Customized Commerce tracks catalog changes for export with the **Export Catalog Feed Incrementally **scheduled job. <br>The default setting is **false**. If false, the job does not run.|
|**episerver:commerce.MaxEntryProcessForIncrementalCatalogFeed**||The maximum number of products to be processed when the scheduled job is executed. The default setting is **10,000**.|