Pstore: Ruby Built-In Hash Persistence

I do a lot of ML and AI work nowadays... I miss Ruby a lot especially the its culture around ergonomics.

Don't use this. Marshal has too many issues. If you really need persistence and can't use something like Postgres, use the Ox gem instead. It's more reliable between versions of Ruby and easier to parse from other languages if you ever have to.

Interesting. Transactionality is implemented via a regular thread lock, this means in a concurrent Rails app where this library is used in a hot path you might suffer some contention. Best is to use for marshaling data in non-hot paths such as stand alone scripts or app start up. I only say this because it's quite different from expectations around transactions in an SQL sense.

Note, this is a wrapper around Ruby’s Marshal class.

I would think this would have limited usefulness for most web applications as the latest trend for web apps is to think of the deployed code as ephemeral, and local files are not something devs often rely on. I guess if you're mounting block storage or some other virtual file system that would be another thing. For non-web applications, this could be a simplistic replacement for what people often use sqlite for. The readme doesn't talk much about concurrent access to the store other than the transactions, so concurrent operations may also be a limitation.

pstore has been a built-in with Ruby stdlib for as long as ruby has existed, so _over_ 20 years.