xtdb
An immutable database for application development and time-travel data compliance, with SQL and XTQL. Developed by @juxt (by xtdb)
nippy
The fastest serialization library for Clojure (by taoensso)
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| xtdb | nippy | |
|---|---|---|
| 17 | 2 | |
| 2,441 | 1,026 | |
| 1.1% | 0.7% | |
| 9.9 | 8.2 | |
| 5 days ago | 19 days ago | |
| Clojure | Clojure | |
| Mozilla Public License 2.0 | Eclipse Public License 1.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.
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
Posts with mentions or reviews of xtdb.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-01-09.
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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
nippy
Posts with mentions or reviews of nippy.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-06-06.
-
XTDB with Postgres storage.
The `event_key` for the `topic=docs` rows is a content-addressable hash of the document. The `v` column is indeed https://github.com/ptaoussanis/nippy data.
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The Strength of the Record (philosophy behind Crux)
The way Crux works today is that https://github.com/ptaoussanis/nippy is used to _precisely_ serialize the record (a.k.a. document map) such that details like the ordering of elements in vector values is preserved. Maintaining the order of cardinality-many values using any of the triple-based Clojure Datalog stores would require additional modelling and code complexity.
What are some alternatives?
When comparing xtdb and nippy you can also consider the following projects:
datahike - A durable Datalog implementation adaptable for distribution.
biff - A Clojure web framework for solo developers.
datalevin - A simple, fast and versatile Datalog database
encore - Core utils library for Clojure/Script
crux - General purpose bitemporal database for SQL, Datalog & graph queries. Backed by @juxt [Moved to: https://github.com/xtdb/xtdb]
sente - Realtime web comms library for Clojure/Script
datascript - Immutable database and Datalog query engine for Clojure, ClojureScript and JS
lines - A pure bash clojureish CI pipeline
kpow-secure - Key Generation and Payload Encryption
spring-data-jpa-temporal - Temporal auditing extension of the Spring Data JPA module
overarch - Overarch provides a data model for the holistic description of a software system, opening multiple use cases on the model data. Supports C4 and UML diagram generation with PlantUML.