lacinia VS datalevin

Very specific example, but Lacinia, the primary GraphQL open source library used for Clojure apps, was developed by a guy at Walmart Labs. (He has since moved on though.)

https://github.com/walmartlabs/lacinia What I know about tech at Walmart is the Clojure lib above, which is the de facto graphql lib for the language today. Point being that tech existed for a while before big tech, and imo is going to be ever more present in more sectors of the economy. MAANG seems most relevant today in the capacities they gain from the amount of data they collect, and the importance of AWS for infrastructure (unless that's overrated, as it's starting to look like it is). What I know for sure is that the obsession with big tech as a representation of tech as a whole gives a distorted picture of things. Getting closer to reality in this matter is one big challenge.

There are some Clojure-ecosystems things that are pretty cool, too, that you'd probably miss going into Haskell. lacinia is an extremely cool GraphQL library, and there are a variety of interesting datalog-based datastores which are spiritual descendents of Datomic, notably xtdb (formerly crux) and datalevin. Also as noted, you can write the front-end in ClojureScript if you want to, and there are a lot of cool libraries for that as well.

Now, I noticed a ways back that Clojure 1.0 added the tap> function, and I vaguely knew it would be helpful for this kind of thing; I finally got around to trying it out to debug some hairy NullPointerException bugs in Lacinia.

Part of this was due to some inefficiencies in Lacinia, since corrected, but we also found other hot-spots specific to our application's code.

You can also consider other durable Datalog options like datahike or datalevin which can work either as lib (SQLite style) or in a client-server setup; if you want to play with bi-temporality XTDB is a rock solid option with very good support and documentation.

There are some Clojure-ecosystems things that are pretty cool, too, that you'd probably miss going into Haskell. lacinia is an extremely cool GraphQL library, and there are a variety of interesting datalog-based datastores which are spiritual descendents of Datomic, notably xtdb (formerly crux) and datalevin. Also as noted, you can write the front-end in ClojureScript if you want to, and there are a lot of cool libraries for that as well.

There are plenty of open source Datomic Inspired databases. Check out https://github.com/juji-io/datalevin and scroll down all the way down to “Alternatives”. There was even the beginning of a rust one by Mozilla: https://github.com/mozilla/mentat

The benchmarks in question have several implementation issues, I reported them on GitHub.

https://github.com/juji-io/datalevin/issues/created_by/caval...

Highly recommend you give https://github.com/juji-io/datalevin a chance. You can use it both as a key-value and/or relational datalog store (like datomic) but it’s very simple to set up and blazing fast!

Unlike some other commenters, I agree that graph models are usually a better fit for most data than relational models. There's been some interesting work in recent years developing this idea: in the Clojure world there's Datomic, XTDB, and a host of competitors, all of which build on work from Semantic Web/SPARQL/triplestores and logic programming. Some are even intended to be used as primary datastores: they support some amount of schema and constraints, have well-defined consistency and ACID guarantees, etc. This makes them unlike graph databases like Neo4J and others, which fill an architectural role more like Elasticsearch as a read-optimization tool. Here's an interesting talk making a case for triple-based databases.