Trong thế giới trading và phân tích tài chính, dữ liệu lịch sử (historical data) là vàng ròng. Bạn cần replay chiến lược, backtest chiến thuật, hoặc đơn giản là xem lại biến động giá của ngày hôm qua. Nhưng việc truy cập dữ liệu thị trường từ các nguồn chính thức thường tốn kém và phức tạp. Bài viết này sẽ hướng dẫn bạn xây dựng một Tardis Machine - máy chủ local playback dữ liệu thị trường với chi phí gần như bằng không.

Bảng so sánh: HolySheep AI vs API chính thức vs Dịch vụ Relay

Tiêu chí HolySheep AI API chính thức (Tardis.dev) Dịch vụ Relay tự host
Chi phí hàng tháng Miễn phí (có free credits) $29-499/tháng Server ~$10-50/tháng
Độ trễ truy vấn <50ms 100-300ms Tùy server, thường 20-100ms
Thiết lập 5 phút 1-2 giờ 4-8 giờ
Bảo trì Không cần Không cần Cần liên tục
Số lượng sàn 30+ sàn 35+ sàn Tùy cấu hình
Hỗ trợ WebSocket Có Có Có
Tỷ giá ¥1 = $1 (85%+ tiết kiệm) Giá USD Tùy nhà cung cấp

Như bạn thấy, việc tự xây dựng máy chủ local có chi phí vận hành và công sức bảo trì khá lớn. Trong khi đó, HolySheep AI cung cấp giải pháp cloud-native với độ trễ dưới 50ms, hỗ trợ thanh toán qua WeChat/Alipay, và tỷ giá cực kỳ ưu đãi.

Tardis Machine là gì và tại sao cần nó?

Tardis Machine (lấy cảm hứng từ TARDIS trong Doctor Who) là một máy chủ replay dữ liệu thị trường cho phép bạn:

Phương án 1: Xây dựng với Python (FastAPI)

Kiến trúc tổng quan

Chúng ta sẽ xây dựng một REST API server với FastAPI, sử dụng SQLite để lưu trữ dữ liệu và WebSocket để streaming real-time.

Yêu cầu hệ thống

# requirements.txt
fastapi==0.109.0
uvicorn==0.27.0
aiosqlite==0.19.0
python-dotenv==1.0.0
websockets==12.0
pydantic==2.5.3
httpx==0.26.0
holysheep-sdk==1.0.0  # SDK chính thức của HolySheep

Cài đặt và cấu hình

# setup_environment.sh
#!/bin/bash
python3 -m venv tardis_env
source tardis_env/bin/activate


Cài đặt dependencies

pip install -r requirements.txt


Tạo thư mục cấu trúc

mkdir -p data/{sqlite,cache,logs}
mkdir -p src/{api,models,services,utils}


Tạo file cấu hình

cat > .env << EOF

HolySheep AI Configuration

HOLYSHEEP_API_BASE=https://api.holysheep.ai/v1
HOLYSHEEP_API_KEY=YOUR_HOLYSHEEP_API_KEY


Database

DB_PATH=./data/sqlite/market_data.db


Server

HOST=0.0.0.0
PORT=8080


Cache

CACHE_TTL=3600
MAX_CACHE_SIZE=1000
EOF

echo "Setup hoàn tất! Chạy: source tardis_env/bin/activate"

Model dữ liệu

# src/models/market_data.py
from pydantic import BaseModel, Field
from typing import Optional, List
from datetime import datetime
from enum import Enum

class Exchange(str, Enum):
    BINANCE = "binance"
    BYBIT = "bybit"
    OKX = "okx"
    HTX = "htx"
    GATEIO = "gateio"

class Timeframe(str, Enum):
    M1 = "1m"
    M5 = "5m"
    M15 = "15m"
    H1 = "1h"
    H4 = "4h"
    D1 = "1d"

class OHLCVData(BaseModel):
    timestamp: datetime
    open: float
    high: float
    low: float
    close: float
    volume: float
    quote_volume: Optional[float] = 0.0
    trades: Optional[int] = 0

class TickData(BaseModel):
    timestamp: datetime
    price: float
    quantity: float
    side: str  # buy/sell
    trade_id: str

class OrderBookSnapshot(BaseModel):
    timestamp: datetime
    bids: List[tuple[float, float]]  # [(price, quantity)]
    asks: List[tuple[float, float]]  # [(price, quantity)]
    last_update_id: Optional[int] = None

class ReplayRequest(BaseModel):
    exchange: Exchange
    symbol: str
    start_time: datetime
    end_time: datetime
    timeframe: Optional[Timeframe] = Timeframe.M1
    data_type: str = Field(default="ohlcv", pattern="^(ohlcv|tick|orderbook)$")

class ReplayResponse(BaseModel):
    request_id: str
    status: str
    data: List[OHLCVData] | List[TickData] | List[OrderBookSnapshot]
    total_records: int
    query_time_ms: float

Service xử lý dữ liệu với HolySheep

# src/services/market_service.py
import httpx
import asyncio
from datetime import datetime, timedelta
from typing import Optional, List
from src.models.market_data import (
    OHLCVData, TickData, OrderBookSnapshot,
    Exchange, Timeframe, ReplayRequest, ReplayResponse
)

class MarketDataService:
    def __init__(self, api_key: str):
        self.base_url = "https://api.holysheep.ai/v1"
        self.api_key = api_key
        self.headers = {
            "Authorization": f"Bearer {api_key}",
            "Content-Type": "application/json"
        }
        self._cache = {}
        self._cache_ttl = 3600  # 1 hour

    async def fetch_ohlcv(
        self,
        exchange: str,
        symbol: str,
        start_time: datetime,
        end_time: datetime,
        timeframe: str = "1m"
    ) -> List[OHLCVData]:
        """Lấy dữ liệu OHLCV từ HolySheep API"""
        cache_key = f"{exchange}:{symbol}:{timeframe}:{start_time.isoformat()}"
        
        # Kiểm tra cache trước
        if cache_key in self._cache:
            cached_data, cached_time = self._cache[cache_key]
            if (datetime.now() - cached_time).seconds < self._cache_ttl:
                return cached_data

        async with httpx.AsyncClient(timeout=60.0) as client:
            response = await client.post(
                f"{self.base_url}/market/historical",
                headers=self.headers,
                json={
                    "exchange": exchange,
                    "symbol": symbol,
                    "start_time": start_time.isoformat(),
                    "end_time": end_time.isoformat(),
                    "timeframe": timeframe,
                    "data_type": "ohlcv"
                }
            )
            
            if response.status_code == 200:
                data = response.json()
                ohlcv_list = [
                    OHLCVData(
                        timestamp=datetime.fromisoformat(item["timestamp"]),
                        open=float(item["open"]),
                        high=float(item["high"]),
                        low=float(item["low"]),
                        close=float(item["close"]),
                        volume=float(item["volume"]),
                        quote_volume=float(item.get("quote_volume", 0)),
                        trades=int(item.get("trades", 0))
                    )
                    for item in data["data"]
                ]
                
                # Lưu vào cache
                self._cache[cache_key] = (ohlcv_list, datetime.now())
                return ohlcv_list
            else:
                raise Exception(f"API Error: {response.status_code} - {response.text}")

    async def fetch_ticks(
        self,
        exchange: str,
        symbol: str,
        start_time: datetime,
        end_time: datetime,
        limit: int = 1000
    ) -> List[TickData]:
        """Lấy dữ liệu tick từ HolySheep API"""
        async with httpx.AsyncClient(timeout=60.0) as client:
            response = await client.post(
                f"{self.base_url}/market/ticks",
                headers=self.headers,
                json={
                    "exchange": exchange,
                    "symbol": symbol,
                    "start_time": start_time.isoformat(),
                    "end_time": end_time.isoformat(),
                    "limit": limit
                }
            )
            
            if response.status_code == 200:
                data = response.json()
                return [
                    TickData(
                        timestamp=datetime.fromisoformat(item["timestamp"]),
                        price=float(item["price"]),
                        quantity=float(item["quantity"]),
                        side=item["side"],
                        trade_id=item["trade_id"]
                    )
                    for item in data["data"]
                ]
            else:
                raise Exception(f"API Error: {response.status_code}")

    async def replay_data(
        self,
        request: ReplayRequest
    ) -> ReplayResponse:
        """Replay dữ liệu với timestamp simulation"""
        start_query = datetime.now()
        
        if request.data_type == "ohlcv":
            data = await self.fetch_ohlcv(
                exchange=request.exchange.value,
                symbol=request.symbol,
                start_time=request.start_time,
                end_time=request.end_time,
                timeframe=request.timeframe.value if request.timeframe else "1m"
            )
        elif request.data_type == "tick":
            data = await self.fetch_ticks(
                exchange=request.exchange.value,
                symbol=request.symbol,
                start_time=request.start_time,
                end_time=request.end_time
            )
        else:
            raise ValueError(f"Unsupported data type: {request.data_type}")
        
        end_query = datetime.now()
        query_time_ms = (end_query - start_query).total_seconds() * 1000
        
        return ReplayResponse(
            request_id=f"replay_{int(start_query.timestamp())}",
            status="success",
            data=data,
            total_records=len(data),
            query_time_ms=round(query_time_ms, 2)
        )

API Server chính

# src/api/server.py
from fastapi import FastAPI, HTTPException, WebSocket, WebSocketDisconnect
from fastapi.middleware.cors import CORSMiddleware
from contextlib import asynccontextmanager
import asyncio
import json
from datetime import datetime
from src.services.market_service import MarketDataService
from src.models.market_data import ReplayRequest, Exchange, Timeframe

@asynccontextmanager
async def lifespan(app: FastAPI):
    # Startup
    app.state.market_service = MarketDataService(
        api_key=os.getenv("HOLYSHEEP_API_KEY")
    )
    app.state.active_connections = []
    print("🚀 Tardis Machine Server started!")
    yield
    # Shutdown
    print("👋 Shutting down...")

app = FastAPI(
    title="Tardis Machine - Local Playback Server",
    description="Máy chủ replay dữ liệu thị trường với cache thông minh",
    version="1.0.0",
    lifespan=lifespan
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

@app.get("/health")
async def health_check():
    return {
        "status": "healthy",
        "timestamp": datetime.now().isoformat(),
        "service": "Tardis Machine"
    }

@app.post("/api/v1/replay", response_model=dict)
async def replay_market_data(request: ReplayRequest):
    """Endpoint chính để replay dữ liệu thị trường"""
    try:
        service = request.app.state.market_service
        result = await service.replay_data(request)
        return {
            "success": True,
            "data": {
                "request_id": result.request_id,
                "total_records": result.total_records,
                "query_time_ms": result.query_time_ms,
                "records": [
                    {
                        "timestamp": item.timestamp.isoformat(),
                        "open": item.open,
                        "high": item.high,
                        "low": item.low,
                        "close": item.close,
                        "volume": item.volume
                    }
                    for item in result.data
                ]
            }
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@app.websocket("/ws/replay/{exchange}/{symbol}")
async def websocket_replay(websocket: WebSocket, exchange: str, symbol: str):
    """WebSocket endpoint cho streaming dữ liệu replay"""
    await websocket.accept()
    try:
        while True:
            data = await websocket.receive_text()
            params = json.loads(data)
            
            request = ReplayRequest(
                exchange=Exchange(params.get("exchange", exchange)),
                symbol=params.get("symbol", symbol),
                start_time=datetime.fromisoformat(params["start_time"]),
                end_time=datetime.fromisoformat(params["end_time"]),
                timeframe=Timeframe(params.get("timeframe", "1m"))
            )
            
            service = websocket.app.state.market_service
            result = await service.replay_data(request)
            
            await websocket.send_json({
                "type": "data",
                "data": [item.dict() for item in result.data]
            })
    except WebSocketDisconnect:
        print(f"Client disconnected: {exchange}/{symbol}")
    except Exception as e:
        await websocket.send_json({"type": "error", "message": str(e)})

if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8080)

Phương án 2: Xây dựng với Node.js (Express + Socket.io)

Cấu trúc project

// package.json
{
  "name": "tardis-machine-node",
  "version": "1.0.0",
  "type": "module",
  "scripts": {
    "start": "node src/server.js",
    "dev": "nodemon src/server.js",
    "test": "node --test src/**/*.test.js"
  },
  "dependencies": {
    "express": "^4.18.2",
    "socket.io": "^4.7.4",
    "axios": "^1.6.5",
    "dotenv": "^16.3.1",
    "node-cron": "^3.0.3",
    "lru-cache": "^10.1.0",
    "cors": "^2.8.5",
    "helmet": "^7.1.0"
  },
  "devDependencies": {
    "nodemon": "^3.0.2"
  }
}

HolySheep API Client

// src/services/holysheep-client.js
import axios from 'axios';

const HOLYSHEEP_BASE_URL = 'https://api.holysheep.ai/v1';

class HolySheepClient {
    constructor(apiKey) {
        this.apiKey = apiKey;
        this.cache = new Map();
        this.cacheTTL = 3600000; // 1 hour in ms
        this.axiosInstance = axios.create({
            baseURL: HOLYSHEEP_BASE_URL,
            timeout: 60000,
            headers: {
                'Authorization': Bearer ${apiKey},
                'Content-Type': 'application/json'
            }
        });
    }

    // Cache helper
    getCacheKey(exchange, symbol, timeframe, startTime) {
        return ${exchange}:${symbol}:${timeframe}:${startTime};
    }

    getCached(key) {
        const cached = this.cache.get(key);
        if (cached && Date.now() - cached.timestamp < this.cacheTTL) {
            return cached.data;
        }
        return null;
    }

    setCache(key, data) {
        this.cache.set(key, { data, timestamp: Date.now() });
    }

    async fetchOHLCV(exchange, symbol, startTime, endTime, timeframe = '1m') {
        const cacheKey = this.getCacheKey(exchange, symbol, timeframe, startTime);
        const cached = this.getCached(cacheKey);
        if (cached) return cached;

        try {
            const response = await this.axiosInstance.post('/market/historical', {
                exchange,
                symbol,
                start_time: startTime instanceof Date ? startTime.toISOString() : startTime,
                end_time: endTime instanceof Date ? endTime.toISOString() : endTime,
                timeframe,
                data_type: 'ohlcv'
            });

            if (response.data.success) {
                this.setCache(cacheKey, response.data.data);
                return response.data.data;
            }
            throw new Error(response.data.message || 'Unknown error');
        } catch (error) {
            console.error('HolySheep API Error:', error.message);
            throw error;
        }
    }

    async fetchTicks(exchange, symbol, startTime, endTime, limit = 1000) {
        try {
            const response = await this.axiosInstance.post('/market/ticks', {
                exchange,
                symbol,
                start_time: startTime instanceof Date ? startTime.toISOString() : startTime,
                end_time: endTime instanceof Date ? endTime.toISOString() : endTime,
                limit
            });

            return response.data.data || [];
        } catch (error) {
            console.error('HolySheep Ticks Error:', error.message);
            throw error;
        }
    }

    async fetchOrderBook(exchange, symbol, limit = 20) {
        try {
            const response = await this.axiosInstance.post('/market/orderbook', {
                exchange,
                symbol,
                limit
            });

            return response.data.data;
        } catch (error) {
            console.error('HolySheep OrderBook Error:', error.message);
            throw error;
        }
    }
}

export default HolySheepClient;

Replay Engine

// src/services/replay-engine.js
import HolySheepClient from './holysheep-client.js';

class ReplayEngine {
    constructor(apiKey) {
        this.client = new HolySheepClient(apiKey);
        this.activeSessions = new Map();
    }

    async createSession(sessionId, exchange, symbol, startTime, endTime, timeframe = '1m') {
        const start = Date.now();
        const data = await this.client.fetchOHLCV(exchange, symbol, startTime, endTime, timeframe);
        const queryTime = Date.now() - start;

        const session = {
            id: sessionId,
            exchange,
            symbol,
            timeframe,
            data,
            currentIndex: 0,
            createdAt: new Date(),
            queryTimeMs: queryTime,
            totalRecords: data.length
        };

        this.activeSessions.set(sessionId, session);
        return session;
    }

    getSession(sessionId) {
        return this.activeSessions.get(sessionId);
    }

    replayNext(sessionId, count = 100) {
        const session = this.activeSessions.get(sessionId);
        if (!session) return null;

        const endIndex = Math.min(session.currentIndex + count, session.data.length);
        const chunk = session.data.slice(session.currentIndex, endIndex);
        session.currentIndex = endIndex;

        return {
            sessionId,
            records: chunk,
            hasMore: session.currentIndex < session.data.length,
            progress: ${session.currentIndex}/${session.totalRecords}
        };
    }

    replayUntil(sessionId, targetTimestamp) {
        const session = this.activeSessions.get(sessionId);
        if (!session) return null;

        const results = [];
        while (session.currentIndex < session.data.length) {
            const record = session.data[session.currentIndex];
            if (new Date(record.timestamp) > new Date(targetTimestamp)) {
                break;
            }
            results.push(record);
            session.currentIndex++;
        }

        return {
            sessionId,
            records: results,
            hasMore: session.currentIndex < session.data.length,
            progress: ${session.currentIndex}/${session.totalRecords}
        };
    }

    destroySession(sessionId) {
        return this.activeSessions.delete(sessionId);
    }
}

export default ReplayEngine;

Main Server

// src/server.js
import express from 'express';
import { createServer } from 'http';
import { Server } from 'socket.io';
import cors from 'cors';
import helmet from 'helmet';
import dotenv from 'dotenv';
import ReplayEngine from './services/replay-engine.js';
import { v4 as uuidv4 } from 'uuid';

dotenv.config();

const app = express();
const httpServer = createServer(app);
const io = new Server(httpServer, {
    cors: {
        origin: '*',
        methods: ['GET', 'POST']
    }
});

// Middleware
app.use(helmet());
app.use(cors());
app.use(express.json());

// Initialize Replay Engine
const replayEngine = new ReplayEngine(process.env.HOLYSHEEP_API_KEY);

// REST Endpoints
app.get('/health', (req, res) => {
    res.json({
        status: 'healthy',
        timestamp: new Date().toISOString(),
        service: 'Tardis Machine Node.js',
        version: '1.0.0'
    });
});

app.post('/api/v1/session', async (req, res) => {
    try {
        const { exchange, symbol, start_time, end_time, timeframe } = req.body;
        
        if (!exchange || !symbol || !start_time || !end_time) {
            return res.status(400).json({
                success: false,
                error: 'Missing required fields: exchange, symbol, start_time, end_time'
            });
        }

        const sessionId = uuidv4();
        const start = Date.now();
        
        const session = await replayEngine.createSession(
            sessionId,
            exchange,
            symbol,
            start_time,
            end_time,
            timeframe || '1m'
        );

        res.json({
            success: true,
            data: {
                session_id: session.id,
                exchange: session.exchange,
                symbol: session.symbol,
                total_records: session.totalRecords,
                query_time_ms: session.queryTimeMs,
                created_at: session.createdAt.toISOString()
            }
        });
    } catch (error) {
        console.error('Session creation error:', error);
        res.status(500).json({
            success: false,
            error: error.message
        });
    }
});

app.get('/api/v1/session/:sessionId/replay', async (req, res) => {
    try {
        const { sessionId } = req.params;
        const count = parseInt(req.query.count) || 100;
        
        const result = replayEngine.replayNext(sessionId, count);
        
        if (!result) {
            return res.status(404).json({
                success: false,
                error: 'Session not found'
            });
        }

        res.json({
            success: true,
            data: result
        });
    } catch (error) {
        res.status(500).json({
            success: false,
            error: error.message
        });
    }
});

app.get('/api/v1/session/:sessionId/replay-until/:timestamp', async (req, res) => {
    try {
        const { sessionId, timestamp } = req.params;
        const result = replayEngine.replayUntil(sessionId, timestamp);
        
        if (!result) {
            return res.status(404).json({
                success: false,
                error: 'Session not found'
            });
        }

        res.json({
            success: true,
            data: result
        });
    } catch (error) {
        res.status(500).json({
            success: false,
            error: error.message
        });
    }
});

app.delete('/api/v1/session/:sessionId', (req, res) => {
    const { sessionId } = req.params;
    const destroyed = replayEngine.destroySession(sessionId);
    
    res.json({
        success: destroyed,
        message: destroyed ? 'Session destroyed' : 'Session not found'
    });
});

// WebSocket Events
io.on('connection', (socket) => {
    console.log(Client connected: ${socket.id});

    socket.on('create-session', async (params) => {
        try {
            const sessionId = uuidv4();
            const session = await replayEngine.createSession(
                sessionId,
                params.exchange,
                params.symbol,
                params.start_time,
                params.end_time,
                params.timeframe
            );

            socket.join(sessionId);
            socket.emit('session-created', {
                session_id: session.id,
                total_records: session.totalRecords,
                query_time_ms: session.queryTimeMs
            });
        } catch (error) {
            socket.emit('error', { message: error.message });
        }
    });

    socket.on('replay-next', (data) => {
        const result = replayEngine.replayNext(data.session_id, data.count || 100);
        socket.emit('replay-data', result);
    });

    socket.on('replay-until', (data) => {
        const result = replayEngine.replayUntil(data.session_id, data.timestamp);
        socket.emit('replay-data', result);
    });

    socket.on('disconnect', () => {
        console.log(Client disconnected: ${socket.id});
    });
});

const PORT = process.env.PORT || 8080;
httpServer.listen(PORT, () => {
    console.log(🚀 Tardis Machine Node.js Server running on port ${PORT});
});

Client SDK cho Trading Bot

# src/utils/tardis_client.py
import httpx
import asyncio
from datetime import datetime, timedelta
from typing import Optional, Callable, List, Dict, Any

class TardisClient:
    def __init__(self, api_key: str, base_url: str = "http://localhost:8080"):
        self.api_key = api_key
        self.base_url = base_url
        self.holysheep_client = None
        
    def set_holysheep(self, api_key: str):
        """Kết nối với HolySheep để lấy dữ liệu thực"""
        from src.services.market_service import MarketDataService
        self.holysheep_client = MarketDataService(api_key)
        
    async def create_session(
        self,
        exchange: str,
        symbol: str,
        start_time: datetime,
        end_time: datetime,
        timeframe: str = "1m"
    ) -> Dict[str, Any]:
        """Tạo session replay mới"""
        async with httpx.AsyncClient() as client:
            response = await client.post(
                f"{self.base_url}/api/v1/session",
                json={
                    "exchange": exchange,
                    "symbol": symbol,
                    "start_time": start_time.isoformat(),
                    "end_time": end_time.isoformat(),
                    "timeframe": timeframe
                }
            )
            return response.json()
    
    async def replay(
        self,
        session_id: str,
        count: int = 100
    ) -> Dict[str, Any]:
        """Lấy chunk dữ liệu tiếp theo"""
        async with httpx.AsyncClient() as client:
            response = await client.get(
                f"{self.base_url}/api/v1/session/{session_id}/replay",
                params={"count": count}
            )
            return response.json()
            
    async def replay_with_callback(
        self,
        session_id: str,
        callback: Callable[[List], None],
        chunk_size: int = 100,
        delay_ms: int = 1000
    ):
        """Replay với callback cho mỗi chunk - mô phỏng real-time"""
        while True:
            result = await self.replay(session_id, chunk_size)
            if not result.get("success") or not result["data"]["records"]:
                break
                
            await callback(result["data"]["records"])
            
            if not result["data"]["hasMore"]:
                break
                
            await asyncio.sleep(delay_ms / 1000)  # Delay giữa các chunk
            
    def get_historical_direct(
        self,
        exchange: str,
        symbol: str,
        start_time: datetime,
        end_time: datetime,
        timeframe: str = "1m"
    ) -> List[Dict]:
        """Lấy dữ liệu trực tiếp từ HolySheep (không qua local cache)"""
        if not self.holysheep_client:
            raise ValueError("HolySheep client chưa được khởi tạo. Gọi set_holysheep() trước.")
        
        loop = asyncio.get_event_loop()
        return loop.run_until_complete(
            self.holysheep_client.fetch_ohlcv(
                exchange, symbol, start_time, end_time, timeframe
            )
        )


Ví dụ sử dụng

async def example_backtest():
    client = TardisClient("http://localhost:8080")
    
    # Kết nối HolySheep để lấy dữ liệu
    client.set_holysheep("YOUR_HOLYSHEEP_API_KEY")
    
    # Tạo session replay
    session = await client.create_session(
        exchange="binance",
        symbol="BTC/USDT",
        start_time=datetime.now() - timedelta(days=7),
        end_time=datetime.now(),
        timeframe="5m"
    )
    
    print(f"Session created: {session['data']['session_id']}")
    
    # Callback để xử lý dữ liệu (backtest logic)
    def process_candles(candles):
        for candle in candles:
            print(f"{candle['timestamp']}: O={candle['open']} H={candle['high']} L={candle['low']} C={candle['close']}")
    
    # Replay với delay 1 giây giữa các chunk
    await client.replay_with_callback(
        session['data']['session_id'],
        process_candles,
        chunk_size=50,
        delay_ms=1000
    )

if __name__ == "__main__":
    asyncio.run(example_backtest())

Docker Compose cho deployment nhanh

# docker-compose.yml
version: '3.8'

services:
  tardis-python:
    build:
      context: .
      dockerfile: Dockerfile.python
    ports:
      - "8080:8080"
    environment:
      - HOLYSHEEP_API_KEY=${HOLYS

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