go-zero is a full-stack Go microservices framework with an integrated code generation toolchain (goctl). In production, it provides a production-grade HTTP/REST server (rest/) with a middleware chain for authentication, tracing, rate limiting, circuit breaking, and load shedding; a gRPC server/client framework (zrpc/) with interceptors for observability, auth, and timeout; an API gateway (gateway/) that translates HTTP requests to gRPC; and a CLI tool (goctl) that generates Go, TypeScript, Dart, Java, and Swagger code from API definitions, SQL schemas, and protobuf files. The core library (core/) delivers building blocks: configuration loading (YAML/JSON/TOML), structured logging with rotation, Prometheus metrics, OpenTelemetry tracing, circuit breaker (Google SRE algorithm), adaptive load shedding, rate limiting (token bucket, period limit), distributed caching (Redis, in-memory), SQL/NoSQL data access with caching, service discovery (etcd, Kubernetes), concurrency primitives (singleflight, mapreduce, stream processing), and data structures (rolling window, timing wheel, safe map). The architecture is modular, with each package providing clean interfaces and option patterns. The codebase is well-tested, actively maintained, and demonstrates strong engineering craftsmanship.
Ergo Framework is a Go implementation of the Erlang/OTP actor model for building concurrent, distributed, and fault-tolerant systems. It provides a complete actor runtime with processes, supervision trees, message passing (local and remote), service discovery, and network transparency. The architecture is library-based: applications import the framework and define actors, supervisors, and applications. Key entry points include `ergo.StartNode()` and the `gen`, `act`, `meta`, and `net` packages. The framework has zero core dependencies and uses a custom binary serialization (EDF) for inter-node communication. It is production-grade, with extensive testing, documentation, and a growing ecosystem of extra libraries (registrars, loggers, meta-processes). The codebase demonstrates high craftsmanship with lock-free data structures, efficient buffer pooling, and well-abstracted patterns. The last commit date appears anomalous (2026-09-04), but the repository is actively maintained with many stars and forks.
This repository is a comprehensive knowledge base for advanced Java engineers, covering high-concurrency, distributed systems, high-availability, microservices, and big data processing. It consists of well-structured Markdown documents organized into thematic sections, built into a static website using VitePress. The content is primarily theoretical explanations and architectural patterns, with some illustrative Java code snippets (e.g., Hystrix command examples, snowflake ID generator). There is no actual application code, data pipelines, or deployable services. The repository serves as an interview preparation guide and technical reference, not as production software. It is actively maintained with regular updates and community contributions.