系统关键
1)低延迟架构;2)同步执行;3)异常处理;4)状态监控。
项目四:加密货币套利
本节介绍套利交易系统的架构设计和关键技术。
import asyncio
class ArbitrageExecutor:
"""
套利执行器
"""
def __init__(self, exchanges):
self.exchanges = exchanges
async def execute_arbitrage(self, opportunity):
"""
执行套利交易(同步)
"""
tasks = []
# 同时在两个交易所执行交易
tasks.append(self.place_order(
opportunity['buy_exchange'],
'buy',
opportunity['buy_price'],
opportunity['quantity']
))
tasks.append(self.place_order(
opportunity['sell_exchange'],
'sell',
opportunity['sell_price'],
opportunity['quantity']
))
# 等待两个订单都完成
results = await asyncio.gather(*tasks, return_exceptions=True)
return results
async def place_order(self, exchange, side, price, quantity):
"""
下单
"""
try:
return await self.exchanges[exchange].place_order(side, price, quantity)
except Exception as e:
# 记录错误并回滚
await self.rollback_order(exchange)
raise e
1)低延迟架构;2)同步执行;3)异常处理;4)状态监控。