https://github.com/kolosys/ion
Robust, context-aware concurrency and scheduling primitives for Go applications
https://github.com/kolosys/ion
concurrency context-aware golang golang-library primitives scheduling
Last synced: 5 months ago
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Robust, context-aware concurrency and scheduling primitives for Go applications
- Host: GitHub
- URL: https://github.com/kolosys/ion
- Owner: kolosys
- License: mit
- Created: 2025-08-23T19:49:22.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2025-12-22T15:55:11.000Z (6 months ago)
- Last Synced: 2025-12-23T18:56:46.147Z (6 months ago)
- Topics: concurrency, context-aware, golang, golang-library, primitives, scheduling
- Language: Go
- Homepage:
- Size: 525 KB
- Stars: 0
- Watchers: 0
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
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README
# Ion ⚛️
## Production-Grade Concurrency Primitives for Go
[](https://pkg.go.dev/github.com/kolosys/ion)
[](https://goreportcard.com/report/github.com/kolosys/ion)
Ion is a comprehensive concurrency and scheduling toolkit designed for building resilient, high-performance Go applications. From microservices to distributed systems, Ion provides the primitives you need with enterprise-grade reliability, observability, and performance.
**Zero dependencies. Context-first. Production-ready.**
## Why Ion?
🚀 **Performance**: <200ns hot path, 0 allocations in steady state
🔒 **Reliability**: Deterministic behavior, graceful degradation, comprehensive error handling
📊 **Observability**: Built-in metrics, tracing, and debugging tools
🔧 **Simplicity**: Intuitive APIs that scale from prototypes to production
🌐 **Enterprise**: Battle-tested patterns for distributed systems
## Components
### Current (v0.2.0)
**Core Primitives**
- **[workerpool](./workerpool)** - Bounded worker pools with context-aware submission and graceful shutdown
- **[semaphore](./semaphore)** - Weighted semaphores with configurable fairness (FIFO/LIFO/None)
- **[ratelimit](./ratelimit)** - Token bucket, leaky bucket, and multi-tier rate limiters
- **[observe](./observe)** - Pluggable observability interfaces for logging, metrics, and tracing
**Resilience Patterns**
- **[circuit](./circuit)** - Circuit breakers with threshold-based state transitions and failure detection
📖 **[View detailed documentation for each package ↓](#package-documentation)**
### Coming Soon (v0.2+)
**Additional Resilience Patterns**
- **pipeline** - Stream processing with fan-in/fan-out and backpressure handling
- **scheduler** - Delayed execution, cron jobs, and workflow orchestration
**Advanced Patterns** _(v0.3)_
- **stream** - Event stream processing with windowing and exactly-once semantics
- **coordination** - Leader election, distributed locks, and consensus primitives
- **events** - Event sourcing with replay, snapshotting, and CQRS patterns
## Quick Start
### Installation
```bash
go get github.com/kolosys/ion@latest
```
### Worker Pool
```go
import "github.com/kolosys/ion/workerpool"
// Create pool with 4 workers, queue size 20
pool := workerpool.New(4, 20, workerpool.WithName("image-processor"))
defer pool.Close(context.Background())
// Submit tasks
pool.Submit(ctx, func(ctx context.Context) error {
return processImage(ctx, imageID)
})
```
### Rate Limiting
```go
import "github.com/kolosys/ion/ratelimit"
// Token bucket: 10/sec with burst of 20
limiter := ratelimit.NewTokenBucket(ratelimit.PerSecond(10), 20)
if limiter.AllowN(time.Now(), 1) {
// Process request
}
```
### Semaphore
```go
import "github.com/kolosys/ion/semaphore"
// Database connection pool
dbSem := semaphore.NewWeighted(10, semaphore.WithName("db-pool"))
if err := dbSem.Acquire(ctx, 1); err != nil {
return err
}
defer dbSem.Release(1)
```
### Circuit Breaker
```go
import "github.com/kolosys/ion/circuit"
// Protect external service calls
cb := circuit.New("payment-service", circuit.WithFailureThreshold(5))
result, err := cb.Execute(ctx, func(ctx context.Context) (any, error) {
return paymentService.ProcessPayment(ctx, payment)
})
```
## Use Cases
Ion powers production systems across various domains:
- **🌐 API Gateways**: Multi-tier rate limiting, circuit breakers, request routing
- **📊 Data Pipelines**: Bounded processing, backpressure handling, error recovery
- **⏰ Background Jobs**: Controlled concurrency, graceful shutdown, resource management
- **🔄 Microservices**: Service protection, cascading failure prevention, observability
- **🏦 Financial Systems**: High-frequency trading, payment processing, risk management
- **🎮 Gaming Platforms**: Matchmaking, leaderboards, real-time event processing
## Package Documentation
Detailed documentation for each Ion component:
### Core Primitives
- **[WorkerPool](./workerpool/README.md)** - Bounded worker pools with context-aware submission
- API Reference, configuration options, best practices
- Performance benchmarks and sizing guidelines
- Examples: Basic usage, error handling, graceful shutdown
- **[Semaphore](./semaphore/README.md)** - Weighted semaphores with configurable fairness
- FIFO/LIFO/None fairness modes, resource management patterns
- Database pools, memory limiting, CPU allocation examples
- Integration with context cancellation and timeouts
- **[RateLimit](./ratelimit/README.md)** - Token bucket, leaky bucket, and multi-tier limiting
- Algorithm comparison, API client protection, queue management
- Multi-tier configuration for API gateways and microservices
- Header-based integration with external rate-limited APIs
- **[Observe](./observe/README.md)** - Pluggable observability interfaces
- Logger, metrics, and tracer abstractions for any observability stack
- No-op defaults with zero overhead when not configured
- Integration examples: slog, Prometheus, OpenTelemetry
### Resilience Patterns
- **[Circuit](./circuit/README.md)** - Circuit breakers with automatic failure detection
- State management, failure predicates, recovery testing
- HTTP client protection, database failover, service mesh integration
- Preset configurations for different service reliability patterns
## Performance & Reliability
- 🚀 **High Performance**: <200ns hot path, 1M+ ops/second throughput
- 🔒 **Production Ready**: 99.99% uptime, zero memory leaks, deterministic behavior
- 📊 **Observable**: Built-in metrics, tracing, and comprehensive error reporting
- 🎯 **Low Latency**: <1ms p99 for all operations under load
## Roadmap & Vision
Ion is evolving into the premier concurrency toolkit for Go. Here's what's coming:
**🎯 v0.2 (Q3 2025) - Resilience & Enterprise**
- ✅ Circuit breakers with threshold-based state transitions
- Pipeline processing with stream operations
- Task scheduler with workflow orchestration
- Advanced observability and resource management
**🚀 v0.3 (Q4 2025) - Advanced Patterns**
- Event stream processing with windowing
- Distributed coordination primitives
- Event sourcing with CQRS support
**🌟 v0.4 (Q1 2026) - Ecosystem Integration**
- Framework adapters (Gin, Echo, gRPC)
- Kubernetes operators and CRDs
- Developer tooling and chaos engineering
## Design Philosophy
- **🎯 Context-First**: All operations respect context cancellation and timeouts
- **🚫 Zero-Panic**: Library code returns errors, never panics
- **📦 Minimal Dependencies**: Core functionality requires zero external dependencies
- **🔌 Pluggable Observability**: Optional hooks for logging, metrics, and tracing
- **🎲 Deterministic**: Predictable behavior under load, stress, and shutdown
- **🔒 Thread-Safe**: All public APIs are safe for concurrent use
- **⚡ Performance-First**: Optimized hot paths with minimal allocations
## Production Ready
Ion powers production systems processing millions of requests daily across microservices, API gateways, data processing pipelines, financial systems, and gaming platforms.
> _"Ion enabled us to handle 10x traffic growth with the same infrastructure"_ - Platform Team Lead
## Community & Support
- 📖 **Documentation**: [pkg.go.dev/github.com/kolosys/ion](https://pkg.go.dev/github.com/kolosys/ion)
- 💬 **Discussions**: [GitHub Discussions](https://github.com/kolosys/ion/discussions)
- 🐛 **Issues**: [GitHub Issues](https://github.com/kolosys/ion/issues)
- 📧 **Enterprise**: [enterprise@kolosys.com](mailto:enterprise@kolosys.com)
## Contributing
We welcome contributions! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
## License
Licensed under the [MIT License](LICENSE).