tech roadmap and cost analysis
costs are given as USD/day
running the Postgres DB on a docker on EC2 and taking volume snapshots does not guarantee a consistent DB backup. EBS Snapshots are a point-in-time copy of the data but do not include in-memory and cached data.
- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-creating-snapshot.html)
- https://www.geeksforgeeks.org/write-through-and-write-back-in-cache/
- https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_CreateSnapshot.html
Creating this DB snapshot on a Single-AZ DB instance results in a brief I/O suspension that can last from a few seconds to a few minutes
running the wiki.js application, which does not require CD/CI, on AWS Fargate, which specializes in supporting blue/green deployment, is a poor cost/benefit choice.
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