redis实战 -- python知识散记

-- time.time()

-- row.to_dict()

-- json.dumps(row.to_dict())

#!/usr/bin/env python

import time

def schedule_row_cache(conn,row_id, delay) :
    conn.zadd('delay:', row_id, delay)
    conn.zadd('schedule:', row_id, time.time())

def cache_rows(conn) :
    while not QUIT :
        next = conn.zrange('schedule:', 0, 0, withscores=True)
        now = time.time()
        if not next or next[][] > now :
            time.sleep(.05)
            continue
        row_id = next[][]

        delay = conn.zscore('delay:', row_id)
        if delay <= 0 :
            conn.zdel('delay:', row_id)
            conn.zdel('schedule:', row_id)
            conn.delete('inv:' + row_id)
        row = Inventory.get(row_id)
        conn.zadd('schedule:', row_id, now + delay)
        conn.set('inv:' + row_id, json.dumps(row.to_dict()))

-- time.time() 需要导入time库

-- import time

-- row.to_dict()

啦啦啦