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Free and Open Source, Distributed, RESTful Search Engine
Learn System Design concepts and prepare for interviews using free resources.
Orchestrate everything - from scripts to data, infra, AI, and business - as code, with UI and AI Copilot. Simple. Fast. Scalable.
GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
QuestDB is a high performance, open-source, time-series database
Apache Pulsar - distributed pub-sub messaging system
Apache Doris is an easy-to-use, high performance and unified analytics database.
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies
1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java
AutoMQ is a diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability.
Enso Analytics is a self-service data prep and analysis platform designed for data teams.
Upserts, Deletes And Incremental Processing on Big Data.
Apache Pinot - A realtime distributed OLAP datastore
OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…
CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.
Fault tolerance and resilience patterns for the JVM
A production-grade java implementation of RAFT consensus algorithm.
LakeSoul is an end-to-end, realtime and cloud native Lakehouse framework with fast data ingestion, concurrent update and incremental data analytics on cloud storages for both BI and AI applications.
TLC is a model checker for specifications written in TLA+. The TLA+Toolbox is an IDE for TLA+.
Apache BookKeeper - a scalable, fault tolerant and low latency storage service optimized for append-only workloads
YAS: Yet Another Shop, a sample microservices project in Java
Automated testing to find logic and performance bugs in database systems