Why a Dedicated Price API Over Scraping?

For applications serving jewelers, fintech dashboards, or e-commerce price automation, reliable, low-latency gold and currency prices are critical. Relying on web scraping is a brittle approach. Websites change their HTML structure without notice, breaking your parsers. Dedicated APIs offer a far more robust solution.

A dedicated price API provides:

  • Stability: A documented contract ensures predictable data formats, unlike HTML that can change arbitrarily.
  • Low Latency: Prices are pushed in real-time as market conditions shift, not delivered on a slow polling schedule.
  • Redundancy: Multiple data sources with failover mechanisms ensure continuous service even if one provider experiences an outage.

This article details how to consume real-time gold (gram, quarter, coin) and FX rates using the Hasfiyat Gold & Currency API, demonstrating both REST polling and WebSocket (Socket.IO) for real-time updates.

Polling with REST

The simplest integration method is polling the API using REST. This involves making periodic HTTP requests to retrieve the latest prices. While straightforward, it introduces latency as you only get data when you ask for it, and the frequency of your requests dictates how up-to-date the information is.

The Hasfiyat API offers REST endpoints for various gold types and currency pairs. For instance, you might request the current gram price of gold with a simple GET request:

GET https://api.hasfiyat.com/v1/gold/gram

The response would be a JSON object containing the buy and sell prices, timestamp, and other relevant metadata. This approach is suitable for applications where near real-time data is acceptable and the complexity of WebSockets is not required.

Real-Time Updates with WebSocket (Socket.IO)

For true real-time data, WebSockets are the superior choice. They establish a persistent, bidirectional communication channel between the client and server. This allows the server to push data to the client as soon as it's available, eliminating the latency inherent in polling.

The Hasfiyat API leverages Socket.IO, a popular JavaScript library that enables real-time, bidirectional, event-based communication. To integrate, you'll need to set up a Socket.IO client on your application's backend or frontend.

Setting Up the Socket.IO Client

First, install the Socket.IO client library:

npm install socket.io-client

Then, connect to the Hasfiyat API's WebSocket server:


const io = require('socket.io-client');
const socket = io('https://socket.hasfiyat.com');

socket.on('connect', () => {
    console.log('Connected to Hasfiyat WebSocket server');
    // Subscribe to specific data feeds, e.g., gold gram prices
    socket.emit('subscribe', 'gold_gram');
});

socket.on('priceUpdate', (data) => {
    console.log('Price update received:', data);
    // Update your UI or application state with the new prices
});

socket.on('disconnect', () => {
    console.log('Disconnected from Hasfiyat WebSocket server');
});

Handling Data Events

The server emits events, such as priceUpdate, whenever new price data is available. Your client application listens for these events. The data payload typically includes the asset type (e.g., 'gold_gram'), the current buy and sell prices, and a timestamp. You can then use this data to update your ticker display, trigger alerts, or feed into other automated processes.

The subscribe event allows you to specify which data feeds you are interested in. This is crucial for managing bandwidth and ensuring your application only receives the data it needs. Common subscriptions might include specific gold types ('gold_gram', 'gold_quarter') or currency pairs ('USD_TRY', 'EUR_USD').

Server-Side Implementation Considerations

If you are building a backend service that consumes these real-time prices to then serve them to multiple clients, you would use the Socket.IO server library. Your server would connect to the Hasfiyat WebSocket API, receive price updates, and then broadcast these updates to all connected client applications. This creates a scalable architecture where a single backend instance can manage real-time data distribution for numerous users.

Specific Data Points Available

The Hasfiyat API provides granular data for various gold products and foreign exchange rates. This includes:

  • Gold Prices: Gram (24K, 22K, 18K), Ounce, Kilogram, various coins (e.g., Cumhuriyet Altini), and custom jewelry prices.
  • FX Rates: Major currency pairs like USD/TRY, EUR/TRY, GBP/TRY, EUR/USD, USD/JPY, and many more.

The real-time WebSocket feed ensures that these prices are delivered with minimal delay, making it ideal for high-frequency trading platforms or dynamic financial dashboards.

Conclusion: The Advantage of Real-Time Feeds

Building a real-time gold and FX price ticker requires a stable and low-latency data source. While REST polling is simpler to implement, WebSockets via Socket.IO offer the necessary speed and efficiency for true real-time applications. By utilizing the Hasfiyat API's dedicated WebSocket endpoint, developers can ensure their applications are always equipped with the most current market data, avoiding the pitfalls of fragile web scraping and delivering a superior user experience.