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Rating Cache
Redis cache that serves each product's aggregate star rating with low latency.
Cacheredis@7Residency: eu-west-1Retention: transientAccess Mode: readWrite
What is this?
The Rating Cache holds the aggregate rating (average score and review count) for each product. It is a derived read model — never a source of truth — so it can be rebuilt at any time by replaying published reviews.
What does it store?
- Aggregate rating — one entry per product: average rating, review count and last-updated timestamp.
Access patterns
- The Rating AggregatorRating AggregatorServicev1.0.0
Keeps each product's aggregate star rating up to date as reviews are published, and serves it fast from a cache.
Publishesrating-updatedSubscribesreview-publishedOwnerreviews-platformMapRepoView docs writes the aggregate rating whenever a review is published. - The Review APIReview APIServicev1.0.0
The public-facing API for product reviews. Accepts review submissions, serves published reviews, and is the entry point ...Publishesreview-submitted, review-flagged +1Subscribessubmit-review, flag-review +2Ownerreviews-platformMapRepoView docs reads it to serve Get Product ReviewsGet Product ReviewsQueryv1.0.0Query to fetch the published reviews and aggregate rating for a product.
Ownerreviews-platformSchemaMapView docs.