To track positions timely, I’m checking positions whenever there’s a trade done via onTrade() method from PythonGo. However there’s a threshold on how frequent you could query the account, and you might receive warning from the broker if you query too often.
The solution to this issue is to place a time lag from current query to the next, and we would use the cached positions. At time T, before we query account, we would check Redis if the Position-Key has value, if so, we will use the cached positions; if not, then we have to query account to have a list of positions, which would be saved to Redis under Position-Key, and such key would expire in N seconds.
Related redis commands as following.
SET mkey "hello"
GET mkey
EXPIRE mkey 10
TTL mkey
GET mkey
import redis
r=redis.Redis(host='localhost',port=6379,db=0)
r.set("mkey","hello")
r.get("mkey")
r.expire("mkey")
r.ttl("mkey")
r.get("mkey")
ichihedge 