Local Storage Cache Keys
This data is stored in local storage attributes on the shopper's browser to assist with page load speed times:
Key: Fera.Cart:
Type: Cache (mostly)
Description: Fera has the ability to customize the appearance of widgets depending on the cart contents. Cart contents aren't always available so it would require a query to the server to get them, however this storage allows us to cache
Required: No
Effect of Removing: Slower loading of Fera for some stores (~1%)
Local Storage Customer Experience Keys
These local storage keys exist to optimize and improve the customer's experience based on their preferences:
Key: Fera.Skill.*:
Type: Customer experience optimization
Description: Legacy Fera widget memory that saves current shopper preferences
Required? No
Effect of Removing: Legacy (no reviews) widgets may not work properly
Key: Fera.AbTests:
Type: Customer experience optimization
Description: Tracks which bucket the current shopper is in for an A/B test, if any are running. This tells Fera which variation of the A/B test to show the shopper.
Required? No
Effect of Removing: Shopper many see flip-flopping content if a merchant is running an A/B test since Fera won't be able to remember which A/B test variation it showed the customer the first time.
Key: Fera.EventHistory:
Type: Customer experience optimization
Description: When Fera requests widget content (like reviews list displays or customer photo galleries) it sends view history to ensure that A/B test buckets are set to the right variation.
Required: No
Effect of Removing: Shopper may see the same widget content more than once.
Key: Fera.SocialProof.seenTracker :
Type: Customer experience optimization
Description: Reduces duplicate displays of social proof event feeds (like reviews submitted by other shoppers)
Required: No
Effect of Removing: Shopper may see the same widget content more than once.
Key: Fera.Fera.EngagementRegistry.historicalEngagements:
Type: Customer experience optimization
Description: Reduces duplicate displays of social proof event feeds (like reviews submitted by other shoppers)
Required: No
Effect of Removing: Shopper may see widgets/reviews that are less relevant to them.
Key: Fera.TimeTracker.*:
Type: Customer experience optimization
Description: Some content does not show immediately depending on some merchants' advanced widget configurations. This timer tells Fera when to show the widget content, even if the shopper navigates to another page (must be on site)
Required: No
Effect of Removing: Content that would normally show after a certain amount of time (like for returning shoppers) may not show.