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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  Personal website https://sirix.io github website twitter website

Education

MSc Information Engineering

Hacktoberfest: Contribute to our temporal database system

Hacktoberfest: Contribute to our temporal database system

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1 min read

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Contributors wanted: Practice your Svelte and TypeScript skills 👩‍💻👨‍💻

Contributors wanted: Practice your Svelte and TypeScript skills 👩‍💻👨‍💻

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2 min read
Create a Rust-Client during Hacktoberfest

Create a Rust-Client during Hacktoberfest

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1 min read
Query the full history of your JSON database

Query the full history of your JSON database

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7 min read
Contribute to An Evolutionary Database System during #Hacktoberfest (technology stack: Java, Kotlin, Vert.x)

Contribute to An Evolutionary Database System during #Hacktoberfest (technology stack: Java, Kotlin, Vert.x)

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Practice your Svelte skills during Hacktoberfest 👩‍💻👨‍💻

Practice your Svelte skills during Hacktoberfest 👩‍💻👨‍💻

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A Hacktoberfest Project for Java/Kotlin Backend and Svelte/Typescript Frontend developers 👩‍💻👨‍💻

A Hacktoberfest Project for Java/Kotlin Backend and Svelte/Typescript Frontend developers 👩‍💻👨‍💻

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3 min read
Help to build an evolutionary, accumulate-only Database System

Help to build an evolutionary, accumulate-only Database System

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

Best 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

VLDB 2020 (very large databases conference) for free

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Source of an Van Emde Boas Tree Layout for Binary Search Trees

Source of an Van Emde Boas Tree Layout for Binary Search Trees

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How to prepare for Hacktoberfest as a project owner?

How to prepare for Hacktoberfest as a project owner?

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1 min read
Blake3 Crytopgrahic Hash Function / Java Implementation?

Blake3 Crytopgrahic Hash Function / Java Implementation?

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

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

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

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

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What interesting stuff are you working on?

What interesting stuff are you working on?

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

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

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Using Apache Kafka for horizontal scaling of a temporal document store?

Using Apache Kafka for horizontal scaling of a temporal document store?

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What was your biggest win this year?

What was your biggest win this year?

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GraphQL for PostgreSQL - Why?

GraphQL for PostgreSQL - Why?

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Something similar to #Hacktoberfest for Supporting Open Source projects?

Something 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 🐬

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) 👩‍💻👨‍💻

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

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Java Fibers (Project Loom) vs. Kotlin Coroutines...

Java Fibers (Project Loom) vs. Kotlin Coroutines...

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OAuth2 auth with Nuxt.js/Vue.js (frontend), Vert.x (backend for BL) and Keycloak (auth server) 👩‍💻👨‍💻

OAuth2 auth with Nuxt.js/Vue.js (frontend), Vert.x (backend for BL) and Keycloak (auth server) 👩‍💻👨‍💻

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SirixDB Roadmap 🎃🎉

SirixDB Roadmap 🎃🎉

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

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

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1 min read
Mixing Kotlin and Java in a single module of a multi-module Maven or Gradle project

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

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1 min read
#Hacktoberfest / Issue with Nuxt.js, TypeScript and Element-UI

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

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

#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

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

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

Help 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 🎃🎉

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

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

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

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

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

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

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

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Apache Pulsar vs. Apache Kafka

Apache Pulsar vs. Apache Kafka

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Help speeding up website / Mobile View

Help speeding up website / Mobile View

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Thoughts on GraphQL and REST / JSONiq

Thoughts on GraphQL and REST / JSONiq

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Vue.js or React with D3?

Vue.js or React with D3?

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Move Java-project to Kotlin

Move Java-project to Kotlin

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Manage metadata in JSON (for instance for visualizations)

Manage metadata in JSON (for instance for visualizations)

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Version Your Database / Future Directions

Version Your Database / Future Directions

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In-Memory Performance for Big Data

In-Memory Performance for Big Data

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Processing.js

Processing.js

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SirixDB: Importance of Efficiently Retaining the History of Your Data

SirixDB: Importance of Efficiently Retaining the History of Your Data

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Looking for Open Source contributors (and users :-))

Looking for Open Source contributors (and users :-))

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CSS help needed to improve documentation

CSS help needed to improve documentation

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SirixDB - Architecture of an Evolutionary, Temporal Database System

SirixDB - Architecture of an Evolutionary, Temporal Database System

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A Guide to SirixDB

A Guide to SirixDB

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

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

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

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

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Pushing Database Versioning to its Limits

Pushing Database Versioning to its Limits

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

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

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

Sirix.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

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

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

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

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