> ## Documentation Index
> Fetch the complete documentation index at: https://algolia.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Introduction to Shopify indexing
> Learn how indexing works with the Algolia AI Search & Discovery app for Shopify.
To index your data, the Algolia AI Search & Discovery app uses the Shopify API and webhooks.
## Full reindexing
When you install the app in your store,
it automatically starts indexing your data.
This is called a **full reindex**.
You can trigger full reindexes in the **Indexing** tab.
## Automatic updates
The app is designed to automatically keep your data up to date. It uses [Shopify webhooks](https://help.shopify.com/api/reference/webhook) to know when you make updates to your Shopify catalog and to immediately push the changes.
Shopify doesn't provide webhooks for **blog posts and pages**
To keep your search up to date,
the app runs a full reindex of articles and pages every day.
For intermediate updates,
manually trigger a full reindexing from the **Indexing** tab.
## Indexing jobs
To index your data while keeping your data consistent and respecting [Shopify's rate limiting](https://shopify.dev/docs/api/usage/rate-limits),
the app uses an indexing queue: all your indexing jobs wait until they can be processed.
You can see the number of queued indexing jobs in the **Indexing** tab of the app.
Whenever you notice that your data isn't up to date, you should check the indexing queue.
Every data packet that is either waiting to be or is actively being processed is listed here,
alongside a progress bar.
## Algolia operations
With automatic updates, the app generates the required indexing operations to keep your data in sync with Algolia.
Different Shopify data types require a different number of indexing operations:
* **Product updates**
Each product update triggers one indexing operation per variant.
For example, updating 5 products with 4 variants each results in 20 indexing operations.
* **Collection updates**
If collection indexing is enabled,
each collection update triggers one indexing operation per collection.
If you use the **Collection pages** feature or **Enable faceting on collections** setting,
a collection update also triggers one indexing operation per product variant per collection.
* Example without **Collection Pages**:
updating 2 collections (one with 20 product variants, the other with 30) results in 2 indexing operations (one per collection).
* Example with **Collection Pages**:
updating 2 collections (one with 20 product variants, the other with 30) results in 52 indexing operations:
2 for the collections and 50 for their 20 and 30 product variants.
* **Order updates**
Each order update generates 1 indexing operation.
For example, if the app received 20 order updates, it will generate 20 indexing operations.
When performing a full reindex, similar numbers apply:
* **Full product reindex**
The number of indexing operations generated is equal to the total number of published variants in the store.
* **Full collection reindex**
The number of indexing operations is equal to the total number of published collections.
If you enable the **Collection Pages** feature or the **Enable faceting on collections** option,
the app makes extra indexing operations equal to the number of variants in those collections.