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Johannes Lichtenberger profile picture

Johannes Lichtenberger

I'm working on an Open Source temporal NoSQL document storage system called SirixDB written in Java (and a module in Kotlin) in my spare time.

Location Germany Joined Joined on  Twitter logo GitHub logo Medium logo External link icon
Education

MSc Information Engineering

Help to build an evolutionary, accumulate-only Database System

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#discussBest way to be able to spend more time on an Open Source project?

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VLDB 2020 (very large databases conference) for free

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#helpSource of an Van Emde Boas Tree Layout for Binary Search Trees

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#discussHow to prepare for Hacktoberfest as a project owner?

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#discussBlake3 Crytopgrahic Hash Function / Java Implementation?

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#discussWhat are the advantages/disadvantages of memory mapped files for a DBMS?

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#helpRolling, secure hashes for nodes in a tree / How to reduce on-disk space consumption?

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#discussWhat interesting stuff are you working on?

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#showdevDesigning a Novel Temporal Database Storage Engine for Byte-Addressable Non-Volatile Memory

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#discussUsing Apache Kafka for horizontal scaling of a temporal document store?

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#discussWhat was your biggest win this year?

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#discussGraphQL for PostgreSQL - Why?

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#discussSomething similar to #Hacktoberfest for Supporting Open Source projects?

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How to Implement Nuxt.js/Vue.js OAuth2 Authentication With an External REST-API Server (based on Vert.x/Kotlin) and Keycloak 🐬

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Building a Frontend for a Temporal Document Store Together (Vue.js Composition API, Nuxt.js, TypeScript, D3.js) 👩‍💻👨‍💻

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#discussJava Fibers (Project Loom) vs. Kotlin Coroutines...

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#helpOAuth2 auth with Nuxt.js/Vue.js (frontend), Vert.x (backend for BL) and Keycloak (auth server) 👩‍💻👨‍💻

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#discussSirixDB Roadmap 🎃🎉

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Vue.js OAuth2 authentication / Backend: Vert.x, Auth server is Keycloak

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#discussMixing Kotlin and Java in a single module of a multi-module Maven or Gradle project

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#discuss#Hacktoberfest / Issue with Nuxt.js, TypeScript and Element-UI

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#help#Hacktoberfest / Testing a Test-Setup for a temporal REST-API

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Building a web frontend with Vue.js v3, Typescript and D3.js during #Hacktoberfest together

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#helpHelp with maven multi-module project / Java module system (with a PR)

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Thank you so much, for all the #Hacktoberfest contributions so far 🎃🎉

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#helpWorking on a Versioned, Temporal NoSQL Document Store During Hacktoberfest 👩‍💻👨‍💻

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#helpSearching Contributors (Hacktoberfest) / Open Source project (SirixDB) / building a Vue.js and D3.js frontend

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#helpSearching Contributors / Open Source project (SirixDB) / building a Vue.js and D3.js frontend

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#discussApache Pulsar vs. Apache Kafka

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#helpHelp speeding up website / Mobile View

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#discussThoughts on GraphQL and REST / JSONiq

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#discussVue.js or React with D3?

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#helpMove Java-project to Kotlin

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#discussManage metadata in JSON (for instance for visualizations)

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#discussVersion Your Database / Future Directions

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#discussIn-Memory Performance for Big Data

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#discussProcessing.js

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#showdevSirixDB: Importance of Efficiently Retaining the History of Your Data

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#showdevLooking for Open Source contributors (and users :-))

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CSS help needed to improve documentation

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SirixDB - Architecture of an Evolutionary, Temporal Database System

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A Guide to SirixDB

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Sirix - Released 0.9.1 (time travel queries and versioning made easy)

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Asynchronous, Temporal REST With Vert.x, Keycloak and Kotlin Coroutines

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Separating Key Concerns in Query Processing - Set Orientation, Physical Data Independence, and Parallelism

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Pushing Database Versioning to its Limits

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#showdevANN: Version 0.9.0 of Sirix.io - efficient versioning of XML and JSON data / supports time-travel queries and diffing

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#showdevSirix.io - NoSQL document store which efficiently retains the history of your XML and JSON data and allows time-travel queries

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Pushing Database Versioning to Its Limits by Means of a Novel Sliding Snapshot Algorithm and Efficient Time Travel Queries

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How we built a RESTful API with Vert.x, Kotlin Coroutines and Keycloak

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SirixDB - a temporal, versioned storage sytem -- http://sirix.io

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