Regarding your concerns about keeping your data reliable, here <https://cloud.google.com/sql/sla>, you may take a look at Google Cloud SQL SLA which says the Covered Service (including Cloud SQL) will provide a Monthly Uptime Percentage to Customer of at least 99.95%. Furthermore, you can configure a Second Generation Cloud SQL For MySQL instance for high availability by following this guideline <https://cloud.google.com/sql/docs/mysql/configure-ha>.
For any supported language of your interest, you may follow the respective quickstart <https://cloud.google.com/appengine/docs/standard/python/quickstart> to get familiar with how to create a small App Engine application. For your last question, I should note that you can connect to your on premises databases <https://cloud.google.com/appengine/docs/standard/python/using-third-party-databases#on_premises> which exist outside Google Cloud from App Engine as well. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/c2080702-f8e6-4d07-98ce-9e6a18f4e00f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.