Question 1

How do I set up prisma-redis-middleware with ioredis in a Node.js app?

Accepted Answer

Install the package and ioredis, create a Redis client, and configure the middleware with storage type 'redis'. The README provides detailed code examples for both ESM and CommonJS, including options for client setup and invalidation.

Question 2

Does prisma-redis-middleware automatically invalidate cache on data updates?

Accepted Answer

Yes, it supports automatic cache invalidation through the 'invalidateRelated' option in the models configuration. This ensures that when a model like User is updated, related cached data for Post can be invalidated to maintain consistency.

Question 3

prisma-redis-middleware vs using a separate caching layer like Apollo Server cache?

Accepted Answer

prisma-redis-middleware is Prisma-specific and integrates directly at the ORM level, offering granular control over Prisma queries. In contrast, Apollo Server cache is GraphQL-focused and may not handle Prisma model invalidation as seamlessly, making this middleware better for Prisma-centric backends.

Question 4

Can I exclude specific Prisma models from caching with this middleware?

Accepted Answer

Yes, you can use the 'excludeModels' option to list models that should not be cached, or set per-model exclusions in the 'models' array. This allows fine-grained control, such as excluding sensitive data like Payment models from caching.

Question 5

What happens if Redis is down when using prisma-redis-middleware?

Accepted Answer

The middleware falls back to an in-memory LRU cache, so queries continue to be cached locally. However, this loses Redis persistence and may lead to cache inconsistencies until Redis is restored, as noted in the storage options.

Question 6

How can I monitor cache performance and debug issues with prisma-redis-middleware?

Accepted Answer

Utilize the provided debugging hooks like onHit and onMiss in the configuration to log cache events. Additionally, you can pass a custom log (e.g., console) to the storage options for verbose output from the underlying async-cache-dedupe library.

Prisma Redis Middleware - cache queries in Redis

What is Prisma Redis Middleware - cache queries in Redis?

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