datalevin
mentat
datalevin | mentat | |
---|---|---|
15 | 9 | |
1,035 | 1,610 | |
2.1% | - | |
9.6 | 10.0 | |
7 days ago | over 5 years ago | |
Clojure | Rust | |
Eclipse Public License 1.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
datalevin
- Datalevin: A simple, fast and versatile Datalog database
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Is Datomic right for my use case?
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.
- Datomic is free
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benefits of clojure for web development over Haskell
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.
- SQLite Internals: Pages and B-trees
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Call for Help - Open Source Datom/EAV/Fact database in Rust.
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
- Datalevin ships performant fulltext search for its KV and Datalog stores
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T-Wand: Beat Lucene in Less Than 600 Lines of Code
The benchmarks in question have several implementation issues, I reported them on GitHub.
https://github.com/juji-io/datalevin/issues/created_by/caval...
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Choice of NoSQL database: XTDB vs MongoDB
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!
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Ask HN: Why are relational DBs are the standard instead of graph-based DBs?
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.
mentat
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Why did Mozilla abandon the Mentat database?
Why did Mozilla abandon the Mentat database?
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Asami: A flexible graph store in Clojure
There is (now unmaintained) project called Mentat [0] from Mozilla.
[0] https://github.com/mozilla/mentat
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Ideas for DataScript 2
Mozilla was working on the opposite, a Datalog of SQLite, with Mentat, now abandoned: https://github.com/mozilla/mentat
Strikes me as a basically sound idea and it would be lovely if someone picked up the ball.
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SQLite Internals: Pages and B-trees
mentat was archived by mozilla back in 2017, but there are a bunch of forks. Because github is dumb and has a terrible interface for exploring forks [0], I used the Active GitHub Forks tool [1] that helped to find:
qpdb/mentat [2] seems to be the largest (+131 commits) and most recently modified (May this year) fork of mozilla/mentat.
[0]: https://github.com/mozilla/mentat/network/members - Seriously, how am I supposed to use this? Hundreds of entries, but no counts for stars, contributors, or commits, no details about recent commits. Just click every one?
[1]: https://techgaun.github.io/active-forks/index.html
[2]: https://github.com/qpdb/mentat
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Call for Help - Open Source Datom/EAV/Fact database in Rust.
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
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Emacs team considering including SQLite
I think you might be slightly misreading things, from what you quoted it’s about the query language (sql vs Datalog) not the database engine, that would likely be SQLite in any case. Now whether grafting a Datalog query engine onto SQLite is a good idea is a different question (though it’s been done, eg https://github.com/mozilla/mentat), but we should all at least talk about the same thing :)
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I Made the Exact Same App with Firebase,AWS Amplify,RxDB,PouchDB,WatermelonDB
You might be interested in the now defunct Mentat project from Mozilla. They made an EAV store with syncing on top of sqlite. It ran datalog queries by translating them into sql.
https://github.com/mozilla/mentat
What are some alternatives?
xtdb - An immutable database for application development and time-travel data compliance, with SQL and XTQL. Developed by @juxt
SQLite - Official Git mirror of the SQLite source tree
datahike - A durable Datalog implementation adaptable for distribution.
active-forks - Find active github forks of a repo https://git.io/vSnrC
datascript - Immutable database and Datalog query engine for Clojure, ClojureScript and JS
cozo - A transactional, relational-graph-vector database that uses Datalog for query. The hippocampus for AI!
Apache AGE - Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL. [Moved to: https://github.com/apache/age]
client-side-databases - An implementation of the exact same app in Firestore, AWS Datastore, PouchDB, RxDB and WatermelonDB
asami - A graph store for Clojure and ClojureScript
crepe - Datalog compiler embedded in Rust as a procedural macro
grakn - TypeDB: the polymorphic database powered by types
lovefield - Lovefield is a relational database for web apps. Written in JavaScript, works cross-browser. Provides SQL-like APIs that are fast, safe, and easy to use.