Projects sharing features with Patroni

Pigsty is a full-stack orchestration suite for deploying, monitoring, and managing high-availability PostgreSQL clusters and their supporting infrastructure. It functions as a cluster management platform and high-availability suite that automates failover, manages virtual IPs, and ensures data consistency through distributed consensus. The project distinguishes itself by providing a comprehensive database infrastructure-as-code framework and a dedicated observability stack. It incorporates a backup and recovery manager supporting point-in-time recovery via S3-compatible object storage, alongs

Vitess is a database clustering system for horizontal scaling of MySQL. It functions as a middleware layer that abstracts complex sharding and physical topology, allowing applications to interact with a distributed database environment through a unified interface. By intercepting and routing SQL queries across multiple shards, it enables large-scale data management while maintaining the appearance of a single database instance. The platform distinguishes itself through its ability to perform online schema migrations and distributed transaction coordination without requiring application downti

This project is a distributed, document-oriented database system designed to store information in flexible, hierarchical structures. It supports horizontal scaling through automated sharding and maintains high availability across global clusters using a multi-node replication protocol. By executing multi-document operations as atomic units, the system ensures data integrity and consistency across distributed environments. The platform distinguishes itself by integrating advanced vector-based indexing, which enables semantic similarity searches alongside traditional geospatial and lexical quer

Akka.NET is an actor model framework used for building concurrent and distributed applications. It functions as a distributed computing platform and state manager that enables isolated actors to communicate via asynchronous message passing, ensuring thread-safe state management without manual locks. The project is distinguished by its decentralized coordination capabilities, including a distributed state manager that uses sharding and dynamic rebalancing to maintain high availability. It incorporates an event sourcing engine that persists state as a sequence of events in an append-only log an

This project is a comprehensive educational resource and curriculum focused on site reliability engineering, distributed systems, and infrastructure operations. It provides technical guides, a systems engineering course, and instructional manuals designed to teach the principles of managing large-scale computing environments. The curriculum covers high-level architectural design for scalability and resilience, including fault-tolerant infrastructure, high-availability patterns, and microservices decomposition. It emphasizes the practical application of site reliability engineering through the

Citus is a PostgreSQL extension that transforms a standard database into a distributed system. It functions as a sharding framework and distributed SQL engine, enabling horizontal scaling by partitioning tables across a cluster of nodes. By utilizing a coordinator-worker topology, the system manages metadata and routes queries to the appropriate nodes, allowing for parallel execution of complex operations across distributed data shards. The platform distinguishes itself through its specialized support for multi-tenant architectures and real-time analytical processing. It enables tenant-based

dkron is a distributed cron service and high availability task scheduler designed to execute scheduled commands across a cluster of servers. It functions as a scalable replacement for traditional cron by synchronizing task execution across multiple nodes to eliminate single points of failure. The system ensures fault tolerant task automation and high availability cron management through a distributed architecture. It utilizes a replicated state machine and consensus to maintain synchronized job schedules and provides automatic failover and redundancy. The platform covers distributed job sche

Mooncake is a disaggregated large language model serving platform and distributed key-value store designed for high-performance inference infrastructure. It functions as a GPU memory orchestrator and KV cache management system that pools and transfers key-value caches across clusters to accelerate inference. The system distinguishes itself by separating the prefill and decode phases of inference into distinct hardware clusters to optimize resource utilization. It utilizes a high-performance RDMA distributed cache with zero-copy transfers to move data between compute nodes, bypassing the CPU t

Optimism is an Ethereum optimistic rollup stack designed to increase transaction throughput by processing transactions on a secondary layer and settling the state on the Ethereum mainnet. It functions as a scaling framework that utilizes a rollup sequencer to order transactions, produce blocks, and submit batched data to the primary blockchain. The system features a fraud proof system that uses on-chain instruction emulation to resolve disputes and verify the correctness of state transitions. It includes a dedicated toolset for deploying and upgrading the smart contracts required to bootstrap

SkyPilot is a multi-cloud AI orchestrator and distributed task scheduler designed to launch and manage AI workloads across various cloud providers, Kubernetes, and Slurm clusters. It functions as an infrastructure-as-code framework that uses declarative files to define resource requirements and setup commands for consistent execution across different environments. The project differentiates itself through automated cost optimization, selecting the most affordable GPU or TPU hardware and managing spot instances to reduce expenses. It also provides a remote development environment that bridges

rqlite is a distributed relational database that replicates SQLite data across a cluster using the Raft consensus algorithm. It functions as a fault-tolerant storage system that provides high availability and a web API for executing SQL queries and managing relational data without requiring native database drivers. The system distinguishes itself by using an HTTP SQL interface to expose database operations and cluster management. It features a real-time change data capture stream that pushes database mutations to external HTTP endpoints via webhooks and supports the scaling of read throughput

PostgreSQL Automatic Failover: High-Availibility for Postgres, based on Pacemaker and Corosync.

Autobase is a self-hosted PostgreSQL database management platform and orchestrator designed to provide database-as-a-service capabilities. It automates the full lifecycle of PostgreSQL clusters, from initial provisioning and deployment to ongoing administration and decommissioning. The system distinguishes itself by treating database infrastructure as code, allowing clusters to be deployed and updated through version control and continuous integration pipelines. It provides both a centralized web console for visual management and programmatic interfaces for automating infrastructure orchestra

PostgreSQL replication monitoring and failover daemon

Stolon is a cloud native database manager and orchestrator for PostgreSQL. It functions as a high availability manager designed to automate failover, replication, and cluster management in distributed environments. The system coordinates synchronous and asynchronous data mirroring and uses a service discovery mechanism to dynamically detect database node addresses. It routes client traffic to the current primary instance through a proxy to maintain application access during role switches. The project covers disaster recovery through point-in-time recovery and the maintenance of multi-site st

Kill Bill is a subscription billing platform and usage-based billing engine designed to manage recurring invoicing and automated payment collection. It functions as a multi-tenant billing infrastructure, providing isolated environments for different organizational entities through a dedicated API. The system is distinguished by a plugin-based extension framework that allows for the integration of third-party payment gateways and custom business logic. It includes a payment gateway orchestrator to handle transactions and refunds, as well as a revenue recognition system to allocate contract rev

Sealos is a Kubernetes cloud operating system and orchestration engine that treats a Kubernetes cluster as a single unified operating system. It manages the full application lifecycle by acting as an application orchestrator, a cloud development environment provisioner, and a managed database orchestrator. The platform distinguishes itself through a multi-tenant Kubernetes architecture that provides workspace isolation, role-based access control, and resource quotas. It further differentiates its provisioning model by using natural language and AI to define and scale cloud resources, and by p

This project is a PostgreSQL Kubernetes operator and database orchestrator designed to automate the deployment, scaling, and lifecycle management of high-availability database clusters. It functions as a controller that uses declarative manifests to provision and synchronize the state of database instances within a cluster. The system manages high availability through streaming replication and ensures constant availability during maintenance via rolling updates. It also serves as a backup and recovery manager, handling point-in-time recovery, logical backups, and cluster cloning using cloud s

This project is a Terraform Kubernetes provisioner and K3s cluster deployer designed to automate the installation and configuration of lightweight container orchestration on Hetzner Cloud infrastructure. It functions as a Hetzner Cloud infrastructure module, using declarative configuration to manage the full lifecycle of virtual machines, private networks, and load balancers. The orchestrator focuses on high availability by deploying redundant control planes and worker nodes across multiple physical data centers to ensure service continuity. It incorporates a cloud network security manager to

Pritunl is an enterprise VPN gateway and server manager used to deploy and configure OpenVPN and WireGuard servers through a centralized web interface. It functions as a VPN access control system and an SSH certificate authority, issuing short-lived signed certificates to manage secure shell access and network entry without manual public key distribution. The platform acts as an SSO integrated VPN controller, synchronizing user access and organization mapping with third-party identity providers via OAuth, OIDC, and SAML. It supports high-availability deployments by using database-backed clust

Incus is a unified orchestration platform for managing system containers, OCI application containers, and virtual machines through a single control plane. It brings together cluster infrastructure management, secure multi-tenancy, software-defined networking, and pluggable storage backend orchestration into one cohesive system exposed via a full REST API and command-line interface. What distinguishes Incus is its ability to run multiple instance types side by side—full Linux system containers, OCI application containers, and QEMU virtual machines—all managed with consistent tooling. Networkin

karpenter-provider-aws is a Kubernetes node autoscaler and infrastructure provider for AWS. It serves as a node lifecycle manager and cluster cost optimizer that automatically provisions and removes compute instances based on the resource requirements of pending pods. The project distinguishes itself through advanced AWS spot instance orchestration and price-capacity optimized selection to reduce cloud spend. It minimizes costs by consolidating underutilized nodes and prioritizing spot or reserved instances over on-demand capacity, while proactively migrating workloads before cloud provider i

Pgcat is a PostgreSQL middleware solution providing connection pooling, sharding, load balancing, and failover management. It functions as a proxy that optimizes resource usage and scalability by managing database sessions and distributing queries across multiple instances. The system distinguishes itself through traffic mirroring, which duplicates live production queries to test databases for validation. It also implements a sharding proxy to distribute data and queries across multiple database instances based on sharding keys. The project covers high availability through automated failover

Cortex is an open-source, horizontally scalable metrics platform that ingests, stores, and queries Prometheus-compatible time-series data with multi-tenant isolation. It accepts metrics via Prometheus remote write and OpenTelemetry, executes PromQL queries against both recent and historical data, and provides a Prometheus-compatible alerting and recording rule engine with an integrated Alertmanager. The system is built as a set of independently scalable microservices that use hash-ring-based sharding, gossip-based cluster membership, and tenant-aware object storage to distribute workloads acro

Quartz.NET is a job scheduler for .NET applications designed to schedule and execute programmatic tasks. It functions as a distributed task orchestrator and enterprise task orchestrator, capable of managing recurring jobs with concurrency limits and complex intervals. The system provides high availability through a clustered execution model that balances loads and provides fail-over redundancy across multiple server instances. It utilizes a relational database job store to persist job and trigger states, ensuring that scheduled tasks survive application restarts. The framework includes capab

This project is a collection of learning resources and instructional guides for implementing asynchronous messaging patterns using RabbitMQ. It provides a series of tutorials and runnable code examples focused on the Advanced Message Queuing Protocol to help users decouple services via a message broker. The resources cover practical implementation patterns including request-reply, pub-sub, and stream processing. These guides demonstrate how to use official client libraries to balance worker loads, route messages across multiple consumers in a distributed system, and deploy high availability b

Akka Core is an actor model framework and asynchronous concurrency library used for building scalable and resilient distributed systems. It provides a distributed computing platform and fault tolerant runtime that manages communication and state across networked nodes. The system uses location-transparent messaging and a cluster management system to organize nodes into high-availability architectures. This allows for the creation of elastic clusters that scale resources on demand and coordinate distributed workloads. The platform handles concurrent state management and distributed systems or