Building OrderCraft: A Local-First Financial Charting Terminal in a Single ~14MB Go Binary
Описание и применение
OrderCraft – это полностью локальный терминал для финансового анализа, построенный на Go и React, который устраняет ограничения облачных SaaS и проблемы с лицензированием, предоставляя быстрые потоки данных и локальное хранение.
Задача
Cloud SaaS financial charting platforms lock technical analysis behind subscriptions, restrict free users, and force data into the cloud, while hosted open‑source alternatives face IP rate limits and redistribution licensing fees.
Результат
OrderCraft provides a fully local, open‑source financial charting terminal that eliminates cloud dependencies, avoids IP rate limits and redistribution fees, and offers high‑performance WebSocket streams, multi‑chart workspaces, and local persistence.
Рабочий процесс
- Compile Go backend with embedded React SPA using //go:embed
- Cross‑compile binary for Windows, macOS, and Linux
- Run ./ordercraft --app-mode to launch a frameless desktop window
- Connect to public WebSocket feeds (Binance, Bybit, Coinbase) or BYOK broker APIs (Alpaca, OANDA)
- Normalize ticks, aggregate into OHLCV bars, fan out via local WebSocket hub
- Persist historical bars, layouts, drawings, and API keys in local SQLite with 0600 permissions
- Use custom Canvas 2D drawing primitives for trendlines, Fibonacci, channels, risk‑reward calculators, and multi‑pane workspaces
Доказательства
Modern financial charting platforms have converged on the same frustrating cloud SaaS model: lock basic technical analysis behind $15 to $60/month subscriptions, restrict free users to 2 indicators per chart, paywall multi-chart split-screen layouts, and force all your watchlists and layouts into their cloud.
On the flip side, developers who try to build hosted open-source alternatives hit two massive walls almost immediately: IP Rate Limits and Market Data Redistribution Licensing.
OrderCraft (v0.1.0, MIT License) — a high-performance, 100% local-first financial charting and technical analysis terminal built with Go, React 19, TypeScript, and Lightweight Charts (Apache-2.0).
The entire frontend (React 19, TypeScript, Vite) compiles down into static assets and is embedded directly into the Go binary using //go:embed.
All historical OHLCV candle caches, multi-pane workspace layouts, custom chart drawings, indicator templates, and BYOK brokerage credentials are stored in a local SQLite database.
- Дата записи: 2026-11-02T16:14:20.626Z