I sincerely hope you will add PostgreSQL support to CloudSQL soon.
The current Postgres offerings are not great. ElephantSQL is extremely expensive compared to their offering: 4 cores, 15GB RAM, 1TB data for $1,000/mo. CloudSQL (2nd gen) with the exact same specs would be $370/mo. Aiven doesn't advertise exact prices until you sign up, so I can't compare, but I see that the number of instances (max 3 nodes) is very small, so not really an option.
The current Postgres offerings are not great. ElephantSQL is extremely expensive compared to their offering: 4 cores, 15GB RAM, 1TB data for $1,000/mo. CloudSQL (2nd gen) with the exact same specs would be $370/mo. Aiven doesn't advertise exact prices until you sign up, so I can't compare, but I see that the number of instances (max 3 nodes) is very small, so not really an option.