cockroachlabs 
https://www.cockroachlabs.com/ 
介绍说每月免费10GB，需要绑卡，首月有400$额度 
类型：PostgreSQL

Monthly free Basic credits
Accounts with CockroachDB Basic clusters receive $15 of free resource utilization (equivalent to 50 million Request Units and 10 GiB storage) across all clusters. This benefit applies as a $15 credit on their monthly invoice.

A payment method must be added to the account to be ele...