利用python多线程以及文件读行高效率实现redis过期时间批量快速修改。
更新300万数据预计耗时在20分钟。 1.在命令行中键入导出所有keys redis-cli -h 127.0.0.1 -a password -n 0 keys "*" > keys.txt 2.编写python脚本 import redis from concurrent.futures import ThreadPoolExecutor pool = redis.ConnectionPool(host="127.0.0.1 ", password="password", port=6379, db=0) r = redis.StrictRedis(connection_pool=pool) executor = ThreadPoolExecutor(max_workers=100) def change_exp(line): line = line.strip('\n') r.expire(line, 2592000) return line result = [] count = 0 with open("keys.txt") as f: tasks = [executor.submit(change_exp, line) for line in f.readlines()] for task in tasks: if task.done(): result.append(task.result()) 3.执行脚本 python ./test.py