Notice: Over the next few months, we're reorganizing the App Engine documentation site to make it easier to find content and better align with the rest of Google Cloud products. The same content will be available, but the navigation will now match the rest of the Cloud products.
High performance scalable web applications often use a distributed in-memory
data cache in front of or in place of robust persistent storage for some tasks.
We recommend using Memorystore for Redis as your caching service. Note
that Memorystore for Redis does not provide a free tier.