^{🌍 Language: 🇩🇪 German →}

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	GSF-nexutils Modular, reusable Go utilities for applications, services, processing engines, and distributed systems

^{GSF stands for Go Small Frameworks — minimalistic tools for robust applications.}

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Repository

This project is developed and maintained on Codeberg.

Canonical repository:

https://codeberg.org/tiny-frameworks/nexutils

GitHub is an automated mirror of the Codeberg repository:

GitHub mirror:

https://github.com/tiny-frameworks/nexutils

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Overview

GSF-nexutils is a collection of small, focused, reusable Go components for applications, services, processing engines, and distributed systems. The project provides common building blocks for error handling, synchronization, in-memory caching, structured logging, and related infrastructure.

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Module Overview

Module	Subpackage Path	Description
cache	nexutils/cache	Thread-safe LRU cache with TTL, background cleanup, and JSON persistence.
errors	nexutils/errors	Domain-driven error handling with codes, call paths, and OS exit code mapping.
lockingwriter	nexutils/lockingwriter	Process-safe io.Writer using .LOCK files with PID & timestamp stale detection.
logging	nexutils/logging	slog-based structured logger with native nexutils/errors support.
p2p	nexutils/p2p	nexutils/p2p is a lightweight, high-performance JSON-RPC 2.0 over WebSocket package for Go.

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Design Principles

1. Zero External Dependencies: Relies purely on the Go standard library (sync, time, os, log/slog, errors).
2. Modular Architecture: Each subpackage can be imported independently without pulling unnecessary code into your binary.
3. Fail-Fast & Self-Healing: Built-in safeguards like stale-lock recovery, bounded LRU memory caps, and type-safe error chains.
4. Developer Experience: First-class support for Go Example tests and clear API signatures.

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Installation

Import only the modules you need in your Go code:

go get codeberg.org/tiny-frameworks/nexutils

import (
	"codeberg.org/tiny-frameworks/nexutils/cache"
	"codeberg.org/tiny-frameworks/nexutils/errors"
	"codeberg.org/tiny-frameworks/nexutils/lockwriter"
	"codeberg.org/tiny-frameworks/nexutils/logging"
	"codeberg.org/tiny-frameworks/nexutils/p2p/rpc"
)

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Project Structure

nexutils/
├── cache/            # LRU Cache with TTL & JSON storage
├── errors/           # Domain error codes & exit-code mapping
├── lockwriter/       # Thread- & process-safe file writer
├── logging/          # Structured JSON/Text logger
├── p2p/              # lightweight, high-performance JSON-RPC 2.0 over WebSocket Peer package
├── go.mod
├── LICENSE
└── README.md

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Running Tests

Run unit tests across all utility modules simultaneously:

go test -v ./...

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Organizational & Standards

• Copyright: © 2026 Georg Hagn.
• Repository: codeberg.org/tiny-frameworks/nexutils
• License: Apache License, Version 2.0.

GSF-nexutils is an independent open-source project and is not affiliated with any corporation of a similar name.

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Contact & Support

For inquiries, architectural discussions, or security issues, please contact:

📧 georghagn [at] tiny-frameworks.io

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