Projects sharing features with SimianArmy

Toxiproxy is a framework designed for chaos engineering and network resilience testing. It functions as a programmable TCP proxy that intercepts and routes data streams between clients and servers, allowing developers to simulate unstable network conditions such as latency, bandwidth throttling, and connection failures. The tool provides a control plane that enables the dynamic manipulation of network conditions on active connections in real time. By integrating into automated test suites, it allows for the programmatic injection of faults to validate how distributed systems and microservices

This project provides a framework for managing multi-agent systems, designed to automate complex software development, infrastructure, and business workflows. It functions as a multi-agent workflow orchestrator that routes tasks to domain-specific workers while maintaining state persistence and infrastructure automation. By leveraging large language models, the system decomposes high-level objectives into actionable plans, ensuring that complex operations are executed with consistency and reliability. The framework distinguishes itself through its hierarchical agent registry and policy-driven

This project is a service mesh platform designed to manage, secure, and observe service-to-service communication within Kubernetes clusters. It functions as a control plane that orchestrates transparent sidecar proxies, which intercept and manage network traffic to provide reliable connectivity for microservices. By automating the injection of these proxies, the platform ensures that infrastructure-level policies are applied consistently across all workloads without requiring manual configuration changes. The platform distinguishes itself through its focus on zero-trust security and cross-clu

This project is a collection of structured study notes and conceptual breakdowns designed for the AWS Certified Cloud Practitioner exam. It serves as a technical reference and study guide, organizing cloud service details and architectural principles to assist in certification preparation. The knowledge base is built using markdown files and includes curated cheat sheets and interactive mind-map visualizations. These tools map complex certification topics into visual hierarchies to enable drill-down study paths and rapid revision. The materials cover a wide range of cloud capabilities, inclu

Ribbon is a client-side load balancer and RPC communication library designed for inter-process communication. It functions as a fault-tolerant network proxy that distributes outgoing network requests across a pool of available server instances to prevent node overload. The project integrates as a service discovery client, maintaining synchronized lists of available server instances by connecting with cloud environment discovery tools. This allows it to manage request retries and failover behavior when remote servers become unresponsive. The library supports a protocol-agnostic transport laye

Proxy for simulating real-world distributed system failures to improve resilience in your applications.

Orleans is a .NET distributed actor framework designed for building scalable, cloud-native applications. It implements a virtual actor model where entities with stable identities manage their own state and lifecycle across a cluster of servers. The framework provides a distributed state management system with ACID transaction support and a distributed pub/sub streaming engine for real-time data processing. It distinguishes itself through location-transparent routing, automatic actor activation and deactivation, and elastic cluster scaling that redistributes workloads during node failures. Th

Moto is a cloud service mockery framework and API mock server that simulates AWS infrastructure locally. It allows developers to test cloud-dependent code and verify infrastructure-as-code templates without deploying real resources or incurring costs. The project functions as an SDK interceptor that can patch existing service clients to redirect requests to a local mock environment. It can also be run as a standalone HTTP server, enabling any programming language to interact with the simulated endpoints. The framework covers a vast array of simulated capabilities, including data storage, com

This project serves as a comprehensive technical reference for the architecture and design of data-intensive applications. It provides a structured analysis of the fundamental principles required to build reliable, scalable, and maintainable software systems, covering the core trade-offs inherent in modern data infrastructure. The repository explores the mechanics of distributed data management, including strategies for replication, partitioning, and achieving consensus across multiple nodes. It details the design of storage engines, indexing techniques, and transaction management models, whi

Finicky is a URL routing tool that intercepts link-open requests and directs each URL to a designated browser before navigation occurs. It operates as a stateless proxy that evaluates user-defined patterns, context, and scriptable logic to dispatch links to the correct browser or profile, keeping work, personal, and other browsing activities separate. The tool distinguishes itself through scriptable routing logic, allowing users to write JavaScript or TypeScript functions that inspect URL details, the source application, and other context to determine the routing decision. It also supports co

Jepsen is a distributed systems testing framework designed to verify the correctness of distributed software. It functions as a fault injection engine and a distributed consistency analyzer that validates whether a system's behavior matches its promised consistency guarantees by analyzing operation histories against formal models. The project distinguishes itself through its ability to simulate complex failure scenarios, including network partitions, node crashes, and clock drifts. It employs packet-level traffic shaping to drop or delay communication and manipulates system time across cluste

Podinfo is a Go-based microservice template designed for Kubernetes, providing a standard pattern for building and testing containerised applications. It exposes REST endpoints for health checks, version information, and configuration, and supports environment-driven configuration for containerised deployment. The project distinguishes itself with built-in capabilities for resilience testing, including fault injection middleware that can inject random errors, latency spikes, or status code mutations. It also offers JWT token-based authentication for stateless request validation, Prometheus me

Foreman is a lifecycle infrastructure management platform used for automating the provisioning, configuration, and monitoring of physical, virtual, and cloud servers. It serves as a central hub for managing the entire lifespan of a server, from initial deployment and operating system upgrades to decommissioning and auditing. The platform functions as a hybrid cloud manager and bare-metal provisioning tool, providing a unified interface to control virtual machine lifecycles across diverse hypervisors and public cloud providers. It automates hardware discovery and operating system deployment us

Axiom is a cloud infrastructure orchestrator and distributed security scanning framework. It serves as a manager for deploying, snapshotting, and destroying disposable virtual machine fleets across multiple cloud providers and regions. The project distinguishes itself by automating the provisioning of vulnerability toolsets and security auditing software across these remote servers. It features a mechanism for distributing security scans by sharding target lists across a fleet of instances and aggregating the resulting data into unified files and HTML reports. The system covers a broad range

This project is a multi-protocol API simulation and mocking system designed to replace external dependencies during development and testing. It provides an API mocking server, a network traffic proxy, and specialized simulators for language model services and identity providers. The system distinguishes itself through deep AI simulation capabilities, including the emulation of language model providers and Model Context Protocol servers using JSON-RPC 2.0. It supports multi-turn conversational logic, state tracking for AI chat APIs, and the visualization of agent execution through call graphs

This project is a cloud infrastructure simulator and system design educational tool. It provides a sandbox environment for designing virtual network topologies and testing the resilience of system architectures under high traffic and simulated attacks. The platform functions as an infrastructure resilience sandbox where users can experiment with the architectural placement of load balancers, caches, and databases. It allows for the validation of auto-scaling strategies, rate limiting, and firewall configurations to prevent service degradation. The simulator covers network traffic management,

FoundationDB is an ACID-compliant distributed transactional key-value store. It functions as a scalable database engine that ensures strict serializability and data consistency across a cluster of servers using a shared-nothing architecture. The system is distinguished by its multi-region replication capabilities, allowing data to be synchronized across different datacenters for high availability and disaster recovery. It utilizes optimistic concurrency control to manage distributed transactions and employs a majority-based coordination system to maintain cluster state. The platform provides

The AWS SDK for Java is a set of client libraries providing a programmatic interface for managing cloud resources and services through the Java language and JVM. It serves as a cloud service client library for executing synchronous and asynchronous API calls to infrastructure components. The library is distinguished by its use of non-blocking asynchronous I/O and a reactive cloud client model, utilizing publishers and subscribers to stream data and manage backpressure. It employs a modular design to decouple services and reduce binary size, while utilizing immutable builders for thread-safe c

Resilience4j is a fault tolerance library for Java 8 applications designed to handle failures in distributed systems. It provides a comprehensive suite of resilience patterns including resource isolation, request throttling, retries, and timeouts. The project implements specific stability mechanisms such as circuit breakers to prevent cascading failures, bulkheads for system resource isolation, and rate limiters to cap execution rates. It also includes a retry framework with backoff policies and timeout enforcement to manage transient faults and maximum execution durations. Additional capabi

MailHog is an email testing tool that functions as a local SMTP server to capture outgoing messages during the development process. By intercepting SMTP traffic, it allows developers to verify email content, headers, and attachments without transmitting messages to actual external recipients. Captured data is stored in an in-memory buffer, ensuring that sensitive information remains accessible for inspection through a dedicated web-based dashboard. The platform distinguishes itself by incorporating network simulation capabilities, which allow for the injection of artificial delays or connecti

Polly is a resilience and transient-fault-handling library for .NET applications. It provides a framework for defining and executing stability patterns that manage failures and resource exhaustion during operation execution. The library enables developers to compose complex resilience strategies through a fluent builder pattern, wrapping target operations in functional decorators. These policies intercept execution flow to apply automated recovery mechanisms, such as retries for temporary errors or circuit breakers that isolate unstable components by blocking requests. The framework supports

Hazelcast is a distributed data platform that combines an in-memory data grid with a stream processing engine to support real-time analytics and event-driven applications. It functions as a partitioned, distributed key-value store that replicates data across cluster nodes to provide low-latency access and high availability. The platform also serves as a distributed SQL query engine, allowing users to execute standard SQL statements against both in-memory datasets and external data sources. What distinguishes Hazelcast is its use of a distributed consensus subsystem to maintain strongly consis

jStorm is a distributed stream processing engine designed for executing low-latency computations on high-volume data streams using Apache Storm topologies. It functions as a real-time data analytics platform and distributed task orchestrator that manages complex data pipelines via directed acyclic graph execution. The system provides a scalable framework for data pipeline management, incorporating backpressure-aware flow control to regulate ingestion rates and dynamic resource allocation to adjust computing resources based on real-time demand. It maintains compatibility with Apache Storm conf

DevOps-Bash-tools is a collection of shell scripts and aliases designed to automate cloud infrastructure, container orchestration, and CI/CD pipelines. It provides a comprehensive toolset for managing operational workflows through the command line. The project specializes in automating tasks across multiple platforms, including managing namespaces and secrets in Kubernetes, auditing resources in AWS and GCP, and triggering builds or managing environment variables in GitHub Actions, GitLab CI, and CircleCI. It also includes a toolkit for interacting with container registries to query manifests

This is a Raft consensus library and distributed consensus engine implemented in Go. It provides the primitives necessary to build fault-tolerant distributed services by implementing a replicated state machine that ensures a group of servers agree on a shared system state through leader election and log replication. The project distinguishes itself through a pluggable architecture for storage backends and snapshot storage, decoupling the consensus logic from physical persistence. It includes specialized mechanisms for leadership transfer, protocol version management to support rolling upgrade

Failsafe is a JVM resilience library providing a collection of fault tolerance patterns for Java applications. It functions as an asynchronous execution wrapper that runs tasks in the background and returns futures to prevent thread blocking. The library allows for the composition of resilience policies, enabling multiple patterns to be stacked into a sequential pipeline. It includes specific implementations for circuit breaking to prevent system overload, rate limiting to control traffic flow, and a framework for managing retries and fallbacks. Capability areas cover traffic management thro

This project is a reference implementation of microservices architectures using the Spring Cloud ecosystem. It provides a set of example services that demonstrate the construction of distributed systems through automated service discovery, dynamic routing, and shared configuration. The implementation covers core distributed patterns, including a service discovery system for tracking network components and an API gateway for orchestrating incoming traffic. It features a centralized configuration manager to propagate application settings across multiple instances and a distributed tracing syste