With Prisma Postgres, you also automatically get a connection pool and a global cache: you don't have to worry about overwhelming you db with a large number of connections, and you can add global caching to any query in just a few lines of additional code, e.g.:

``` const user = await prisma.user.findMany({ cacheStrategy: { swr: 60, ttl: 60 } }) // <--- set a cache strategy in really just a single line ```

Both of these are super important when serving users that are spread across the globe. Latencies between regions add up. If you're curious, check out https://accelerate-speed-test.prisma.io/

Similarly enabled already on the db, you can subscribe to any change happening to your db, e.g. to send out welcome emails when a new user is added to the User table. Makes event-driven architectures super easy. Take a look at Pulse, which comes bundled with Prisma Postgres: prisma.io/pulse

Another benefit of a managed service of course is that you don't have to worry about managing any of it. Things happen, traffic spikes, servers go down, for a lot of us, that's nice to not worry about and rather focus on building and shipping the things that make our own products and services unique. Also, in a lot of situations, provisioning something complex is just not worth it, and a quick deployment to try or test something is desired.

Naive, invalidation-unaware caching is a very poor hack that can work mainly for requests that are probably not your core feature, and therefore probably not your bottleneck.