interesting, The Joy of Clojure is on audible as an audiobook ....

"Open paren defun buy dash book"

(In bold because the reader is shouting to indicate the exclamation mark suffix)

does anyone have a recommendation for a simple embeddable keyvalue database? i am leaning towards lmdb, but was wondering if there is a de facto standard clojure community uses?

How much data do you want to store? Is it in-memory or should also be persisted to disk? How do you expect to query it? I think you will get much better recommendations if you can narrow down your requirements a bit 😉

data is market trade events. it is supposed to persist to disk and used for data analytics research and also fed to trading bots. I don't worry about the rate of incoming data being too high at the moment, simplicity and ease of use, availability of libs has more value to me.

https://github.com/replikativ/datahike looks interesting but I haven't yet started working with it

But given you're dealing with trade events. maybe a time-series database would be best? https://www.timescale.com (Postgres extension)

you could something like chronicle-queue to persist the stream of trade events to disk and replay it on whatever app/storage you want to use later

buys you some (relative) safety when it comes to rate of incoming data too

it's also super easy to get started, since it's essentially embeddedable.

chronicle-queue seems to fit in nicely, thx