redis / redis

In-memory data structure store used as a cache, database, message broker, and vector/document query engine.

apache / kafka

Distributed event streaming platform for building high-throughput data pipelines and streaming applications.

bitwarden / server

Backend APIs, SQL Server database, and Docker deployment tooling for the Bitwarden password manager clients.

lionsoul2014 / ip2region

Offline IP-to-region lookup library and data management framework supporting IPv4 and IPv6 with xdb query clients.

apache / spark

Unified analytics engine for large-scale data processing with APIs in Scala, Java, Python, and R.

jeecgboot / JeecgBoot

Enterprise low-code platform (Spring Boot and Vue3) that generates frontend, backend, and database code from natural-language prompts or a code generator.

emqx / emqx

Scalable MQTT broker and IoT messaging platform supporting MQTT 5.0, CoAP, LwM2M, and MQTT over QUIC, with a SQL rule engine and data bridges.

DataTalksClub / machine-learning-zoomcamp

A free, cohort-based course teaching ML engineering: training models, exposing them via APIs, and deploying with Docker, Kubernetes, and AWS Lambda.

typesense / typesense

Typesense is an open-source, in-memory search engine with typo tolerance, faceting, geosearch, and vector search.

hydra-db / hydradb

Distributed graph database in Rust that stores its data durably on S3-compatible object storage and serves OpenCypher over Bolt and HTTP.

firebase / firebase-ios-sdk

Source for Firebase's open-source Apple platform libraries, covering auth, Firestore, messaging, storage, and more for iOS and macOS apps.