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gutenberg
A fast static site generator in a single binary with everything built-in. https://www.getzola.org
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
For a blog do you need a active webserver and database? If you can get away with a static site then IMO that is the better option. Does not strictly need to be rust then but there are a few rust static site generators out there like www.getzola.org (or see this site for a more comprehensive list of them in any language). These can be a lot less maintenance as there is no need for a database or server - posts are generally just stored as markdown files in the repo and hosting can be done for free on github/lab pages or sites like netlify.
For a database, postgresql is a good option, as is mysql or for a simple single host blog sqlite would be a simpler option. There is also https://surrealdb.com/ which is new and looks to be very interesting.