xtdb
datahike
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xtdb | datahike | |
---|---|---|
17 | 12 | |
2,441 | 1,579 | |
1.1% | 0.4% | |
9.9 | 7.1 | |
5 days ago | 3 months ago | |
Clojure | Clojure | |
Mozilla Public License 2.0 | Eclipse Public License 1.0 |
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.
xtdb
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Mariposa – A programming language with time-travel
You don't necessarily need to embed it into the programming language itself to get a ton of value. XTDB (https://github.com/xtdb/xtdb) offer a Clojure, Java and HTTP API for interacting with the database, which is bitemporal and lets you query the database for a specific point in time for example.
- Everything wrong with databases and why their complexity is now unnecessary
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I made a basic python client and ORM for XTDB
XTDB is a bitemporal and dynamic relational database for SQL and Datalog, written in Clojure. The Python application I work on uses XTDB for its bitemporal and schema-less nature. There were a few Python clients that looked unmaintained and lacked some features we needed, so I tried to build something that would have fit our own requirements in hindsight. This includes:
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Endatabas: A SQLite-inspired, SQL document database with full history
it's bitemporal, will be SQL-compatible, and also has another query-language - XTQL :
https://github.com/xtdb/xtdb/tree/2.x/dev/xtql
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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.
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Datomic Is Now Free
You could look into http://xtdb.com/ if you want an open source alternative
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Taming the Time: how to install & develop with XTDB
XTDB, or Cross-Time Database, is a distributed and transactional database system designed to handle complex and changing data with ease. It is based on a bitemporal model, which allows for the tracking of both the valid time and transaction time of data, enabling powerful and flexible querying capabilities. With XTDB, developers can work with immutable data structures, which simplifies development and improves reliability. Its graph query language, Datalog, provides a powerful and expressive way to navigate relationships within the data.
- Introduction to Datalog
- Clojure Turns 15 panel discussion video
- Xtdb
datahike
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The Ten Rules of Schema Growth
Datahike [0] provides similar functionality to datomic and is open source. It lacks some features however that Datomic does have [1].
[0]: https://github.com/replikativ/datahike
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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.
- datahike for reagent SPA?
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Open source Datomic?
Check https://github.com/replikativ/datahike
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Max Datom: Interactive Datomic Tutorial
Oh really interesting. I didn't know about that. I was actually going threw the old Mendat code base and was considering using that.
I would really like a pure Rust version of Datomic for embed use cases.
There is all also Datahike, that is going in that direction too. It is maintained and actively developed.
https://github.com/replikativ/datahike
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Show HN: Matrix-CRDT – real-time collaborative apps using Matrix as backend
Having an Datomic like store backed by something like this.
https://github.com/replikativ/datahike
Is an Open Source variant of Datomic.
Lambdaforge wants to eventually have this work with CRDTs.
Using the Matrix ecosystem for this is quite interesting as it solves many problems for you already.
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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.
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Datascript + automatic persistency
Have a look at https://github.com/replikativ/datahike and https://github.com/replikativ/datahike-postgres
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Clojure Datalog Databases
There is now a datahike linux native image preview available: https://github.com/replikativ/datahike/releases/tag/preview
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Functional Programming with B trees
And implemented as a full-on datastore queried via Datalog: https://github.com/replikativ/datahike
What are some alternatives?
datalevin - A simple, fast and versatile Datalog database
crux - General purpose bitemporal database for SQL, Datalog & graph queries. Backed by @juxt [Moved to: https://github.com/xtdb/xtdb]
datascript - Immutable database and Datalog query engine for Clojure, ClojureScript and JS
rss-proxy - RSS-proxy allows you to do create an RSS or ATOM feed of almost any website, just by analyzing just the static HTML structure.
biff - A Clojure web framework for solo developers.
asami - A graph store for Clojure and ClojureScript
spring-data-jpa-temporal - Temporal auditing extension of the Spring Data JPA module
terminusdb - TerminusDB is a distributed database with a collaboration model
entish - Entish is a declarative Datalog-like language for formal RPG rules
logseq - A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base. Use it to organize your todo list, to write your journals, or to record your unique life.