Aurum

Investment Management Platform

Welcome!

I invite you to register and use the app Aurum-wallet. It's already in production with active users!

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Demo account with fictitious data for testing.

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Overview

Aurum FrontEnd — Real‑time Investment Dashboard. React frontend for portfolio tracking and real-time quotes, focusing on network resilience, responsive UX and extensible architecture. Integrates WebSockets for market streaming and REST API for secure operations.

Aurum BackEnd — Server-Socket and request management of multiple APIs, with request control. Developed with technologies NestJS, Redis, Bull, Docker, MongoDB, typescript class-validator among others.

Main Features

Realtime: Ticker and price updates via Socket.IO (controlled reconnection, backoff, event‑driven).
Request deduplication: same logical key → one call, multiple consumers; 60s global timeout.
Network resilience: socket URL fallback, connection wait, consistent 4xx/5xx handling.
Structured errors + custom translation structure: backend returns (status, message); UI translates by status (ex.: error.401) with fallback.
UX: loading states, technical message filtering (ex.: hides "socket not connected"), optimized dark mode.

Relevant Technical Decisions

Socket Singleton: isConnectingRef + connected checks prevent duplicate connections.
Timeouts and Retries: AbortController/timeouts in fetch; global timeout in WebSocket flows.
Standardized errors: always throws object with status/message for predictability.
Robust configuration: getSocketUrl derives fallback from API_URL and environment (dev/prod).

Security and Best Practices

No keys on client: environment variables; no sensitive logic on frontend.
Error isolation: internal messages don't leak; UI filters technical noise.
Scalable architecture: specialized contexts, pure functions for APIs, decoupled components.

Metrics and Performance (indicative)

Unique WebSocket connections per session/component.
Reduction of redundant calls with deduplication.
Reduced perceived latency via streaming + pre-loading on visibility.

Differentials

Above-average network robustness: avoids socket race conditions, promise hangs and reconnection loops.
Product-level error and UX: user-friendly messages, clear diagnostics for devs.
Ready for evolution: data provider changes and new features without breaking internal contracts.

Key Advantage – Efficient API Management

Aurum was built with a focus on performance and scalability. Through optimized API resource management, the system:

Reduces the number of external requests.
Distributes data faster and more efficiently to clients.
Improves response times and overall user experience.
Ensures greater system stability even with high demand.

This makes Aurum not only a powerful investment management platform, but also a high-performance solution for real-time financial data distribution.