Navigating Numeric ID Caching Challenges in ESHOPMAN's Query Graph

Understanding ESHOPMAN's Query Graph Caching with Numeric IDs

The ESHOPMAN platform, a powerful headless commerce solution integrated with HubSpot, offers robust data retrieval capabilities through its query.graph() method. This feature is instrumental for developers building dynamic storefronts on HubSpot CMS, allowing for efficient fetching of complex data structures from the ESHOPMAN Admin API or Store API. When caching is enabled for these queries, it significantly boosts performance, but a recent community insight highlights a specific challenge: handling numeric IDs within nested entities.

The Challenge: TypeError with Numeric IDs

A common scenario in headless commerce involves integrating ESHOPMAN with external content management systems (CMS) or other third-party services. Sometimes, these external systems use numeric IDs for their entities, which can then be exposed through ESHOPMAN relationships. For instance, a custom storefront module might fetch product data from a third-party CMS where the CMS-specific product IDs are numeric.

When ESHOPMAN's query.graph() is used with caching enabled, and the query result includes a related entity with a numeric id, a TypeError can occur during the automatic cache tag computation. The internal ESHOPMAN CacheInvalidationParser utility, designed to generate cache tags for efficient invalidation, expects entity IDs to be strings. It attempts to call obj.id.split('_') on these IDs without first verifying their type. If obj.id is a number, this operation fails, leading to a crash.

Consider an ESHOPMAN query.graph() call fetching product data, including a nested cms entity with a numeric ID:

const { data: products = [], metadata } = await query.graph(
    {
        entity: "product",
        fields: ["id", "handle", "cms.id", "cms.meta_description"],
        filters: req.filterableFields,
        pagination: req.queryConfig.pagination,
        context,
    },
    {
        cache: { enable: true },
        locale: req.locale,
    }
)

If the returned data for a product's cms relationship looks like this:

{
    "id": "prod_example",
    "handle": "example-product",
    "cms": {
        "id": 123,
        "meta_description": "Example description"
    }
}

The numeric cms.id (123) can trigger the error during cache tag generation, resulting in:

TypeError: obj.id.split is not a function
    at CacheInvalidationParser.detectEntityType (.../utils/parser.ts:131:30)

Workarounds and Solutions for ESHOPMAN Developers

While the ESHOPMAN team investigates a permanent fix (likely involving a type check, such as typeof obj.id === 'string', before attempting string-specific operations), developers have several immediate workarounds:

• Disable Caching: The simplest solution is to temporarily disable caching for the specific query.graph() call that encounters numeric IDs. While this impacts performance, it prevents the crash.
• Supply Explicit Cache Tags: Instead of relying on automatic tag computation, you can provide an empty array for tags: { cache: { enable: true, tags: [] } }. This bypasses the problematic automatic detection.
• Ensure String IDs: If feasible, modify your custom CMS module or integration to ensure that all entity IDs, especially those in nested relationships, are returned as strings. This might involve prefixing numeric IDs (e.g., 'cms_123').

This community insight underscores the importance of robust data handling in headless commerce environments. ESHOPMAN developers leveraging Node.js and TypeScript for custom integrations with HubSpot CMS should be aware of this behavior when working with cached queries and external data sources that utilize numeric identifiers.