Lite Streams

A blazing-fast, concurrent, and extensible distributed stream processing system in Go—engineered for high-throughput, low-latency, and robust concurrent workloads. This project is a blueprint for building scalable, real-time data pipelines.

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🚀 Performance at a Glance

This system delivers exceptional throughput and efficiency.

goos: linux
goarch: amd64
cpu: Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz
BenchmarkBroker_AppendRecord-8        14,883,109    68.15 ns/op
BenchmarkBroker_GetRecords-8           1,000,000   1024 ns/op
BenchmarkBroker_ChannelIngestion-8     5,393,268   217.3 ns/op
BenchmarkLoadConfig_Default-8         32,622,258   36.99 ns/op
BenchmarkLoadConfig_EnvOverride-8     25,494,633   46.57 ns/op
BenchmarkProcessor_Process-8          22,775,946   50.00 ns/op
BenchmarkProcessor_ProcessWindow-8          913   1,803,179 ns/op
BenchmarkRecord_Metadata-8            36,200,748   33.23 ns/op

Highlights:

• Handles millions of records per second per core.
• Sub-microsecond latency for core operations.
• Efficient channel-based ingestion and transformation.

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🏗️ Project Structure

.
├── benchmark/           # Benchmarks for all core components
│   ├── broker_benchmark_test.go
│   ├── config_benchmark_test.go
│   ├── processor_benchmark_test.go
│   ├── types_benchmark_test.go
│   └── README.md
├── config/              # Configuration loader
│   └── config.go
├── internal/
│   ├── broker/          # In-memory broker (shards, retention, channel ingestion)
│   │   └── broker.go
│   ├── processor/       # Stream processor (transformations, windowing)
│   │   └── processor.go
│   └── types/           # Shared data types (Record, etc.)
│       └── types.go
├── tests/
│   ├── unit/            # Unit tests for all components
│   └── integration/     # Integration tests for end-to-end flows
├── cmd/
│   ├── producer/        # Producer simulation
│   │   └── main.go
│   └── consumer/        # Consumer simulation
│       └── main.go
├── Makefile             # Helpful run commands
├── go.mod               # Go module definition
└── README.md            # This file

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🛠️ Installation & Setup

1. Clone the repository:

   git clone https://github.com/khushmanvar/litestreams
   cd litestreams

2. Ensure Go 1.20+ is installed:

   go version

3. Install dependencies:

   go mod tidy

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▶️ Usage Examples

Run the Producer

Simulates sending records to the stream:

make run-producer

Run the Consumer

Simulates consuming and processing records:

make run-consumer

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🧪 Testing & Benchmarking

Run All Unit and Integration Tests

go test ./tests/unit/... ./tests/integration/...

Run All Benchmarks

go test -bench=. ./benchmark/...

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💡 Solution Overview

• Broker: In-memory, sharded, append-only log with retention and channel-based ingestion.
• Processor: Pluggable transformation and windowed processing logic.
• Types: Extensible record structure with metadata.
• Config: Simple, environment-driven configuration.
• Producer/Consumer: Simulated entry points for data flow and processing.
• Tests: 100% coverage with clear separation of unit and integration tests.
• Benchmarks: Comprehensive performance metrics for all core operations.

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🤝 Contributing

Contributions are welcome! Please open issues or pull requests for improvements, new features, or bug fixes.

📄 License

MIT License. See LICENSE for details.