You can use Postgres and Redis. :) I'm working on writing new tutorials for both of those, but in the meantime:
You can host your own Postgres on Compute Engine [1] or use a hosted provider like ElephantSQL [2]. You can use whatever client library you want to connect to postgres in App Engine flexible.
Same story for redis - you can host it on Compute Engine [3] or use something like redislabs.
You can host your own Postgres on Compute Engine [1] or use a hosted provider like ElephantSQL [2]. You can use whatever client library you want to connect to postgres in App Engine flexible.
Same story for redis - you can host it on Compute Engine [3] or use something like redislabs.
[1] https://cloud.google.com/solutions/set-up-postgres
[2] https://www.elephantsql.com/
[3] https://cloud.google.com/launcher/?q=redis
[4] https://redislabs.com/
Note: I'm in Developer Relations for Google Cloud Platform