$ const WebSocket = require("ws"); const Redis = require("ioredis"); const redis = new Redis({ host: "localhost", port: 6379 }); // iTick WebSocket Configuration (based on official documentation) const ITICK_CONFIG = { wsUrl: "wss://api.itick.org/stock", apiToken: "your_token", // Replace with your actual iTick API Token pingInterval: 30000, reconnectDelay: 3000, maxReconnectTimes: 10, subscribeTypes: ["tick", "quote", "depth", "kline@1"], }; let iTickWs = null; const clientMap = new Map(); // clientId → WebSocket const clientSubscriptions = new Map(); // clientId → symbols array (e.g., ["AAPL$US"]) const clientSubscribeTypes = new Map(); // clientId → types array // Initialize connection to iTick official WebSocket function initITickConnection() { if (iTickWs) iTickWs.close(1000, "Reinitializing"); iTickWs = new WebSocket(ITICK_CONFIG.wsUrl, { headers: { token: ITICK_CONFIG.apiToken }, }); iTickWs.on("open", () => { console.log("Successfully connected to iTick official WebSocket server"); }); iTickWs.on("message", (message) => { try { const data = JSON.parse(message.toString()); // Handle connection success if (data.code === 1 && data.msg === "Connected Successfully") { console.log("iTick WebSocket connected successfully"); } // Handle authentication result else if (data.resAc === "auth") { if (data.code === 1) { console.log("iTick API authentication successful"); pushAllClientSubscriptions(); } else { console.error(`iTick authentication failed: ${data.msg}`); setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } } // Handle subscription result else if (data.resAc === "subscribe") { console.log(`iTick subscription ${data.code === 1 ? "succeeded" : "failed"}: ${data.msg}`); } // Handle pong else if (data.resAc === "pong") { console.log(`Received iTick pong, timestamp: ${data.data?.params}`); } // Handle market data (tick / quote / depth / kline) else if (data.code === 1 && data.data) { const marketData = data.data; const dataType = marketData.type; let formattedData = {}; switch (dataType) { case "tick": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, volume: marketData.v, tradeTime: marketData.t, type: "tick" }; break; case "quote": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, openPrice: marketData.o, highPrice: marketData.h, lowPrice: marketData.l, volume: marketData.v, turnover: marketData.tu, tradeTime: marketData.t, type: "quote" }; break; case "depth": formattedData = { symbol: marketData.s, ask: marketData.a, bid: marketData.b, type: "depth" }; break; case "kline@1": case "kline@2": /* ... other kline types */ formattedData = { symbol: marketData.s, closePrice: marketData.c, highPrice: marketData.h, lowPrice: marketData.l, openPrice: marketData.o, volume: marketData.v, turnover: marketData.tu, time: marketData.t, klineCycle: marketData.type, type: "kline" }; break; default: formattedData = marketData; } pushQuotesToClients(formattedData); } } catch (err) { console.error("Failed to parse iTick message:", err.message); } }); iTickWs.on("close", (code, reason) => { console.log(`iTick connection closed (code: ${code}). Reconnecting in ${ITICK_CONFIG.reconnectDelay / 1000}s...`); if (ITICK_CONFIG.maxReconnectTimes > 0) { ITICK_CONFIG.maxReconnectTimes--; setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } }); iTickWs.on("error", (err) => console.error("iTick connection error:", err.message)); // Heartbeat (ping every 30s) setInterval(() => { if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "ping", params: Date.now().toString() })); } }, ITICK_CONFIG.pingInterval); } // Push all client subscriptions to iTick function pushAllClientSubscriptions() { for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.length > 0) { const types = clientSubscribeTypes.get(clientId) || ITICK_CONFIG.subscribeTypes; const msg = { ac: "subscribe", params: symbols.join(","), types: types.join(",") }; iTickWs.send(JSON.stringify(msg)); } } } // Forward formatted quote to subscribed clients function pushQuotesToClients(quote) { const targetSymbol = quote.symbol; for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.includes(targetSymbol)) { const clientWs = clientMap.get(clientId); if (clientWs && clientWs.readyState === WebSocket.OPEN) { clientWs.send(JSON.stringify({ type: "stock_quote", data: quote, timestamp: Date.now() })); } } } } // Start frontend WebSocket server on port 8080 const wss = new WebSocket.Server({ port: 8080 }); console.log("Frontend WebSocket server started on port 8080"); wss.on("connection", (ws, req) => { const clientId = `client_${Math.random().toString(36).slice(2)}`; clientMap.set(clientId, ws); clientSubscriptions.set(clientId, []); clientSubscribeTypes.set(clientId, []); console.log(`Client ${clientId} connected. Online: ${clientMap.size}`); ws.on("message", (message) => { try { const data = JSON.parse(message.toString()); const { action, symbols, types } = data; if (action === "subscribe") { // validation omitted for brevity const newSubs = [...new Set([...clientSubscriptions.get(clientId), ...symbols])]; const newTypes = [...new Set([...clientSubscribeTypes.get(clientId), ...types])]; clientSubscriptions.set(clientId, newSubs); clientSubscribeTypes.set(clientId, newTypes); if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "subscribe", params: newSubs.join(","), types: newTypes.join(",") })); } ws.send(JSON.stringify({ type: "success", msg: `Subscribed to ${newSubs.join(",")}` })); } else if (action === "unsubscribe") { // similar logic for unsubscribe (-weight: 500;">update subscriptions and re-send to iTick) // ... } else if (action === "query_subscribe") { // return current subscriptions } } catch (err) { ws.send(JSON.stringify({ type: "error", msg: "Invalid JSON format" })); } }); ws.on("close", () => { // Clean up subscriptions and re-subscribe remaining clients to iTick clientMap.delete(clientId); clientSubscriptions.delete(clientId); clientSubscribeTypes.delete(clientId); console.log(`Client ${clientId} disconnected. Online: ${clientMap.size}`); }); }); // Initialize iTick connection on startup initITickConnection(); const WebSocket = require("ws"); const Redis = require("ioredis"); const redis = new Redis({ host: "localhost", port: 6379 }); // iTick WebSocket Configuration (based on official documentation) const ITICK_CONFIG = { wsUrl: "wss://api.itick.org/stock", apiToken: "your_token", // Replace with your actual iTick API Token pingInterval: 30000, reconnectDelay: 3000, maxReconnectTimes: 10, subscribeTypes: ["tick", "quote", "depth", "kline@1"], }; let iTickWs = null; const clientMap = new Map(); // clientId → WebSocket const clientSubscriptions = new Map(); // clientId → symbols array (e.g., ["AAPL$US"]) const clientSubscribeTypes = new Map(); // clientId → types array // Initialize connection to iTick official WebSocket function initITickConnection() { if (iTickWs) iTickWs.close(1000, "Reinitializing"); iTickWs = new WebSocket(ITICK_CONFIG.wsUrl, { headers: { token: ITICK_CONFIG.apiToken }, }); iTickWs.on("open", () => { console.log("Successfully connected to iTick official WebSocket server"); }); iTickWs.on("message", (message) => { try { const data = JSON.parse(message.toString()); // Handle connection success if (data.code === 1 && data.msg === "Connected Successfully") { console.log("iTick WebSocket connected successfully"); } // Handle authentication result else if (data.resAc === "auth") { if (data.code === 1) { console.log("iTick API authentication successful"); pushAllClientSubscriptions(); } else { console.error(`iTick authentication failed: ${data.msg}`); setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } } // Handle subscription result else if (data.resAc === "subscribe") { console.log(`iTick subscription ${data.code === 1 ? "succeeded" : "failed"}: ${data.msg}`); } // Handle pong else if (data.resAc === "pong") { console.log(`Received iTick pong, timestamp: ${data.data?.params}`); } // Handle market data (tick / quote / depth / kline) else if (data.code === 1 && data.data) { const marketData = data.data; const dataType = marketData.type; let formattedData = {}; switch (dataType) { case "tick": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, volume: marketData.v, tradeTime: marketData.t, type: "tick" }; break; case "quote": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, openPrice: marketData.o, highPrice: marketData.h, lowPrice: marketData.l, volume: marketData.v, turnover: marketData.tu, tradeTime: marketData.t, type: "quote" }; break; case "depth": formattedData = { symbol: marketData.s, ask: marketData.a, bid: marketData.b, type: "depth" }; break; case "kline@1": case "kline@2": /* ... other kline types */ formattedData = { symbol: marketData.s, closePrice: marketData.c, highPrice: marketData.h, lowPrice: marketData.l, openPrice: marketData.o, volume: marketData.v, turnover: marketData.tu, time: marketData.t, klineCycle: marketData.type, type: "kline" }; break; default: formattedData = marketData; } pushQuotesToClients(formattedData); } } catch (err) { console.error("Failed to parse iTick message:", err.message); } }); iTickWs.on("close", (code, reason) => { console.log(`iTick connection closed (code: ${code}). Reconnecting in ${ITICK_CONFIG.reconnectDelay / 1000}s...`); if (ITICK_CONFIG.maxReconnectTimes > 0) { ITICK_CONFIG.maxReconnectTimes--; setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } }); iTickWs.on("error", (err) => console.error("iTick connection error:", err.message)); // Heartbeat (ping every 30s) setInterval(() => { if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "ping", params: Date.now().toString() })); } }, ITICK_CONFIG.pingInterval); } // Push all client subscriptions to iTick function pushAllClientSubscriptions() { for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.length > 0) { const types = clientSubscribeTypes.get(clientId) || ITICK_CONFIG.subscribeTypes; const msg = { ac: "subscribe", params: symbols.join(","), types: types.join(",") }; iTickWs.send(JSON.stringify(msg)); } } } // Forward formatted quote to subscribed clients function pushQuotesToClients(quote) { const targetSymbol = quote.symbol; for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.includes(targetSymbol)) { const clientWs = clientMap.get(clientId); if (clientWs && clientWs.readyState === WebSocket.OPEN) { clientWs.send(JSON.stringify({ type: "stock_quote", data: quote, timestamp: Date.now() })); } } } } // Start frontend WebSocket server on port 8080 const wss = new WebSocket.Server({ port: 8080 }); console.log("Frontend WebSocket server started on port 8080"); wss.on("connection", (ws, req) => { const clientId = `client_${Math.random().toString(36).slice(2)}`; clientMap.set(clientId, ws); clientSubscriptions.set(clientId, []); clientSubscribeTypes.set(clientId, []); console.log(`Client ${clientId} connected. Online: ${clientMap.size}`); ws.on("message", (message) => { try { const data = JSON.parse(message.toString()); const { action, symbols, types } = data; if (action === "subscribe") { // validation omitted for brevity const newSubs = [...new Set([...clientSubscriptions.get(clientId), ...symbols])]; const newTypes = [...new Set([...clientSubscribeTypes.get(clientId), ...types])]; clientSubscriptions.set(clientId, newSubs); clientSubscribeTypes.set(clientId, newTypes); if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "subscribe", params: newSubs.join(","), types: newTypes.join(",") })); } ws.send(JSON.stringify({ type: "success", msg: `Subscribed to ${newSubs.join(",")}` })); } else if (action === "unsubscribe") { // similar logic for unsubscribe (-weight: 500;">update subscriptions and re-send to iTick) // ... } else if (action === "query_subscribe") { // return current subscriptions } } catch (err) { ws.send(JSON.stringify({ type: "error", msg: "Invalid JSON format" })); } }); ws.on("close", () => { // Clean up subscriptions and re-subscribe remaining clients to iTick clientMap.delete(clientId); clientSubscriptions.delete(clientId); clientSubscribeTypes.delete(clientId); console.log(`Client ${clientId} disconnected. Online: ${clientMap.size}`); }); }); // Initialize iTick connection on startup initITickConnection(); const WebSocket = require("ws"); const Redis = require("ioredis"); const redis = new Redis({ host: "localhost", port: 6379 }); // iTick WebSocket Configuration (based on official documentation) const ITICK_CONFIG = { wsUrl: "wss://api.itick.org/stock", apiToken: "your_token", // Replace with your actual iTick API Token pingInterval: 30000, reconnectDelay: 3000, maxReconnectTimes: 10, subscribeTypes: ["tick", "quote", "depth", "kline@1"], }; let iTickWs = null; const clientMap = new Map(); // clientId → WebSocket const clientSubscriptions = new Map(); // clientId → symbols array (e.g., ["AAPL$US"]) const clientSubscribeTypes = new Map(); // clientId → types array // Initialize connection to iTick official WebSocket function initITickConnection() { if (iTickWs) iTickWs.close(1000, "Reinitializing"); iTickWs = new WebSocket(ITICK_CONFIG.wsUrl, { headers: { token: ITICK_CONFIG.apiToken }, }); iTickWs.on("open", () => { console.log("Successfully connected to iTick official WebSocket server"); }); iTickWs.on("message", (message) => { try { const data = JSON.parse(message.toString()); // Handle connection success if (data.code === 1 && data.msg === "Connected Successfully") { console.log("iTick WebSocket connected successfully"); } // Handle authentication result else if (data.resAc === "auth") { if (data.code === 1) { console.log("iTick API authentication successful"); pushAllClientSubscriptions(); } else { console.error(`iTick authentication failed: ${data.msg}`); setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } } // Handle subscription result else if (data.resAc === "subscribe") { console.log(`iTick subscription ${data.code === 1 ? "succeeded" : "failed"}: ${data.msg}`); } // Handle pong else if (data.resAc === "pong") { console.log(`Received iTick pong, timestamp: ${data.data?.params}`); } // Handle market data (tick / quote / depth / kline) else if (data.code === 1 && data.data) { const marketData = data.data; const dataType = marketData.type; let formattedData = {}; switch (dataType) { case "tick": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, volume: marketData.v, tradeTime: marketData.t, type: "tick" }; break; case "quote": formattedData = { symbol: marketData.s, lastDealPrice: marketData.ld, openPrice: marketData.o, highPrice: marketData.h, lowPrice: marketData.l, volume: marketData.v, turnover: marketData.tu, tradeTime: marketData.t, type: "quote" }; break; case "depth": formattedData = { symbol: marketData.s, ask: marketData.a, bid: marketData.b, type: "depth" }; break; case "kline@1": case "kline@2": /* ... other kline types */ formattedData = { symbol: marketData.s, closePrice: marketData.c, highPrice: marketData.h, lowPrice: marketData.l, openPrice: marketData.o, volume: marketData.v, turnover: marketData.tu, time: marketData.t, klineCycle: marketData.type, type: "kline" }; break; default: formattedData = marketData; } pushQuotesToClients(formattedData); } } catch (err) { console.error("Failed to parse iTick message:", err.message); } }); iTickWs.on("close", (code, reason) => { console.log(`iTick connection closed (code: ${code}). Reconnecting in ${ITICK_CONFIG.reconnectDelay / 1000}s...`); if (ITICK_CONFIG.maxReconnectTimes > 0) { ITICK_CONFIG.maxReconnectTimes--; setTimeout(initITickConnection, ITICK_CONFIG.reconnectDelay); } }); iTickWs.on("error", (err) => console.error("iTick connection error:", err.message)); // Heartbeat (ping every 30s) setInterval(() => { if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "ping", params: Date.now().toString() })); } }, ITICK_CONFIG.pingInterval); } // Push all client subscriptions to iTick function pushAllClientSubscriptions() { for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.length > 0) { const types = clientSubscribeTypes.get(clientId) || ITICK_CONFIG.subscribeTypes; const msg = { ac: "subscribe", params: symbols.join(","), types: types.join(",") }; iTickWs.send(JSON.stringify(msg)); } } } // Forward formatted quote to subscribed clients function pushQuotesToClients(quote) { const targetSymbol = quote.symbol; for (const [clientId, symbols] of clientSubscriptions.entries()) { if (symbols.includes(targetSymbol)) { const clientWs = clientMap.get(clientId); if (clientWs && clientWs.readyState === WebSocket.OPEN) { clientWs.send(JSON.stringify({ type: "stock_quote", data: quote, timestamp: Date.now() })); } } } } // Start frontend WebSocket server on port 8080 const wss = new WebSocket.Server({ port: 8080 }); console.log("Frontend WebSocket server started on port 8080"); wss.on("connection", (ws, req) => { const clientId = `client_${Math.random().toString(36).slice(2)}`; clientMap.set(clientId, ws); clientSubscriptions.set(clientId, []); clientSubscribeTypes.set(clientId, []); console.log(`Client ${clientId} connected. Online: ${clientMap.size}`); ws.on("message", (message) => { try { const data = JSON.parse(message.toString()); const { action, symbols, types } = data; if (action === "subscribe") { // validation omitted for brevity const newSubs = [...new Set([...clientSubscriptions.get(clientId), ...symbols])]; const newTypes = [...new Set([...clientSubscribeTypes.get(clientId), ...types])]; clientSubscriptions.set(clientId, newSubs); clientSubscribeTypes.set(clientId, newTypes); if (iTickWs && iTickWs.readyState === WebSocket.OPEN) { iTickWs.send(JSON.stringify({ ac: "subscribe", params: newSubs.join(","), types: newTypes.join(",") })); } ws.send(JSON.stringify({ type: "success", msg: `Subscribed to ${newSubs.join(",")}` })); } else if (action === "unsubscribe") { // similar logic for unsubscribe (-weight: 500;">update subscriptions and re-send to iTick) // ... } else if (action === "query_subscribe") { // return current subscriptions } } catch (err) { ws.send(JSON.stringify({ type: "error", msg: "Invalid JSON format" })); } }); ws.on("close", () => { // Clean up subscriptions and re-subscribe remaining clients to iTick clientMap.delete(clientId); clientSubscriptions.delete(clientId); clientSubscribeTypes.delete(clientId); console.log(`Client ${clientId} disconnected. Online: ${clientMap.size}`); }); }); // Initialize iTick connection on startup initITickConnection(); - Severe resource waste: Approximately 80% of polling requests return no new data (when quotes haven’t changed), consuming massive server bandwidth and CPU resources. Under high concurrency, server load grows exponentially. - Uncontrollable latency: Long polling intervals (e.g., 1 second) result in insufficient timeliness for capturing short-term fluctuations; short intervals (e.g., 100ms) dramatically increase server load — creating a classic dilemma. - Connection bottlenecks: Each client must maintain multiple TCP connections, constrained by HTTP connection limits, making it impossible to support massive concurrent users. - Millisecond-level low latency: After connection establishment, data push requires no repeated handshakes. End-to-end latency can be reduced to under 100ms. Benchmarks show WebSocket reduces latency by over 90% compared to HTTP polling for the same data volume. - Efficient resource utilization: Only one persistent connection is maintained per client. Bandwidth consumption is reduced by approximately 62% versus HTTP polling. A single node can easily support 100,000+ concurrent connections. - Full-duplex communication: The server can push real-time quote changes, while clients can actively send subscription, unsubscription, or other commands — enabling flexible two-way interaction suitable for multi-market and multi-instrument scenarios. - Cross-platform compatibility: Supports browsers, mobile apps, backend services, and more. It seamlessly integrates with web quote pages, quantitative trading systems, monitoring platforms, and other financial applications. - Raw data sources: Primarily based on iTick WebSocket market data API, strictly following official connection addresses, authentication methods, and subscription formats to obtain real-time quotes (tick-by-tick trades, order book data, real-time prices) for US stocks, Hong Kong stocks, A-shares, and global markets. Multiple exchange APIs and third-party providers serve as backups for failover. - Data standardization: Convert heterogeneous data from different sources (varying timestamp and price field formats) into a unified format, encapsulated using Protobuf binary protocol to reduce payload size and improve transmission efficiency. - Caching: Use Redis Cluster for hot market data (popular stocks, indices) and user subscription relationships (failover < 200ms). LevelDB stores the most recent 5 minutes of quotes to prevent data loss during network interruptions. - Distributed message queue: Kafka or RabbitMQ receives market data from the data layer, implementing peak shaving and valley filling to prevent high-volume quote spikes from overwhelming WebSocket gateways. - Subscription management: Maintains mappings between users and instruments (stock symbols, trading pairs). Supports batch multi-symbol subscriptions and dynamic unsubscriptions. A “global subscription pool” eliminates duplicate pushes. - Market computation nodes: Perform lightweight processing on raw data (e.g., calculating percentage change, accumulating volume) and filter data based on user subscriptions for “precise push.” - Circuit breaking & degradation: Implement token bucket rate limiting. Automatically switch to backup data centers when error rates exceed thresholds. Support three-level degradation (pause non-core market data, reduce K-line precision, -weight: 500;">enable local cache) to maintain system stability. - WebSocket gateway: Built with Netty for non-blocking I/O. A single node supports 100,000+ concurrent connections. Cluster deployment with load balancing prevents single points of failure. - Session management: Store client connection -weight: 500;">status in Redis (session ID, subscribed symbols, connection duration). Supports subscription recovery after reconnection. - Security authentication: Use WSS (WebSocket over TLS) for encrypted communication. JWT temporary tokens verify client identity, with daily key rotation to prevent unauthorized access. - Intelligent routing: Route clients to the optimal access point based on geographic location (e.g., Frankfurt, Singapore, Silicon Valley nodes) to minimize cross-border transmission latency. - Core: Netty + WebSocket, Nginx (load balancing) - Reason: Netty delivers excellent non-blocking I/O performance for high concurrency; Nginx provides effective cluster load balancing. - Core: Kafka, Redis Cluster, Spring Async - Reason: Kafka offers high throughput for massive quote messages; Redis handles fast caching of subscriptions and hot data; Spring Async enables non-blocking push. - Core: Protobuf, Zstandard, LevelDB - Reason: Protobuf significantly reduces data size; Zstandard provides real-time compression (saving ~40% bandwidth); LevelDB offers fast local caching of recent quotes. - Core: JavaScript (browser), Python (quant programs) - Reason: Simple, cross-platform APIs that integrate easily with web quote pages and quantitative trading systems. - Backend: Node.js + ws library + ioredis - Frontend: JavaScript (browser client) - Dependencies: -weight: 500;">npm -weight: 500;">install ws ioredis - Prerequisites: Obtain an iTick API Key (required per official documentation) and confirm the WebSocket endpoint and symbol format (see official symbol list). - Start Redis. - Run the backend: node server.js. - Open the frontend HTML page, subscribe to valid symbols (e.g., AAPL$US, 600519.SH), and observe real-time market data pushed from iTick. - Protocol optimization: Replace JSON with Protobuf (30-50% smaller payload) + Zstandard compression (~40% bandwidth savings). - Connection optimization: Tune TCP parameters (SO_KEEPALIVE, TCP_NODELAY) and use connection pooling. - Push optimization: Batch pushes every 500ms and group clients with identical subscriptions. - Edge computing: Deploy lightweight computation units at CDN edges for geographic proximity. - Cluster deployment for WebSocket gateways, Kafka, and Redis with Nginx load balancing. - Redis Cluster for sub-200ms failover. - Health checks and automatic node isolation. - Token-bucket rate limiting and circuit breakers. - Use WSS (TLS) for all communications. - JWT-based authentication with daily key rotation. - Log auditing for at least 3 months. - Ensure compliance with SEC, SEBI, GDPR, etc. - End-to-end latency: < 100ms (measured ~68ms) - Availability: 99.99%+ - Max concurrent connections: 1 million+ - Data loss rate: < 0.0001% - Recovery time: < 30 seconds - Deeper edge computing - FPGA hardware acceleration - AI-driven intelligent push (LSTM-based hotspot prediction) - Quantum-resistant encryption - Multi-protocol convergence (gRPC + QUIC + 5G) - iTick Official Guide: https://blog.itick.org/en/python-websocket/forex-stock-realtime-api-guide - GitHub: https://github.com/itick-org/