Research monitor/instrumentation for an RDS

# Overview

As a Developer, I want to know how the RDS monitoring is done to ensure the stability and uptime of the applications using RDS.

# Action Items
- [ ] Research different tools to monitor RDS usage

> AWS RDS Performance Insights, Cloudwatch and RDS Log files.

> Setup alerts using AWS SNS monitoring for certain keywords in the log files or filters in the cloudwatch logs.

> https://aws.amazon.com/blogs/database/monitor-amazon-rds-for-postgresql-and-amazon-aurora-for-postgresql-database-log-errors-and-set-up-notifications-using-amazon-cloudwatch

- [ ] Monitor the database memory, CPU and storage settings and setup alerts if it reaches beyond a threshold value. Refer to the best practices of "Routine vacuuming' for postgres database in AWS

- [ ] Research PGSnapper for monitoring postgres RWS database