SirixDB – Storing and Querying of Temporal Data (Java and Open Source)
I'm developing a storage system for versioning data at the subfile level, especially well suited for SSDs due to its log-structured COW nature. It implements a novel versioning algorithm called sliding snapshot, a diff-algorithm which makes use of our stable record-identifiers and optionally hashes, another diff algorithm for importing similar XML-documents as a versioned resource as well as novel XPath axis to navigate not only in space, but also in time. Recently, I've implemented a higher level, asynchronous REST-API with Kotlin (Coroutines) and Vert.x in a seperate module. The system is…
SirixDB – Storing and Querying of Temporal Data (Java and Open Source) launched on December 27, 2018 with 13 votes, #727 of 2,148 launches that month and more than 75% of that year's launches.
In plain words
SirixDB is an open-source Java storage system designed for versioning data at the subfile level, optimized for solid-state drives. It features a sliding snapshot algorithm for efficient version management and allows querying across both space and time using extended XPath capabilities. The system includes a REST API built with Kotlin and Vert.x, making it suitable for temporal analytics tasks that require analyzing how data changes across revisions.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I'm developing a storage system for versioning data at the subfile level, especially well suited for SSDs due to its log-structured COW nature. It implements a novel versioning algorithm called sliding snapshot, a diff-algorithm which makes use of our stable record-identifiers and optionally hashes, another diff…
Does a similar job
all alternatives →- SVSirixDB – versioning through efficient snapshotting2018 · ▲55
I've already posted yesterday, but I'd really love to get comments, any kind of questions, suggestions and help would be greatly appreciated as it's an Open Source project of mine (and was for others during my studies at the University of Konstanz 6 years ago). Since then I spent countless ours to bring forth the idea of a versioned storage system, especially well suited for analytical tasks for timd-varying data. Especially I'd love to discuss what documentation you need, which next steps are necessary (JSON, Cloud...), API additions or changes... I've updated the README quiet a bit, such…
SirixDB – Bitemporal binary JSON database system and event store2023 · github.com · ▲109I had already posted the project a couple of years ago, and it gained some interest, but a lot of stuff has been done since then, especially regarding performance, a completely new JSON store, a REST API, various internals refactored, an improved JSONiq based query engine allowing updates, implementing set-oriented join optimizations, a now already dated web UI, a new Kotlin based CLI, a Python and TypeScript client to ease the use of Sirix... First prototypes from a precursor stem already from 2005. So, what is it all about? The system uses ideas from ZFS (a keyed index trie, storing…
SirixDB - a temporal storage system2018 · sirix.io · ▲6Sirix stores snapshots with a novel versioning approach
Sir – Git-diff-able JSON database on yer filesystem2020 · github.com · ▲115:man: a simple, git diffable JSON database on yer filesystem. By the power of NodeJS - DO-SAY-GO/sirdb
I replaced vector databases with Git for AI memory (PoC)2025 · github.com · ▲198Hey HN! I built a proof-of-concept for AI memory using Git instead of vector databases. The insight: Git already solved versioned document management. Why are we building complex vector stores when we could just use markdown files with Git's built-in diff/blame/history? How it works: Memories stored as markdown files in a Git repo Each conversation = one commit git diff shows how understanding evolves over time BM25 for search (no embeddings needed) LLMs generate search queries from conversation context Example: Ask "how has my project evolved?" and it uses git diff to show actual…
I built a vector database API on Cloudflare2024 · github.com · ▲101🦉⚡️Serverless, distributed vector database as an API - TimeSurgeLabs/athenadb
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