Cartoon | redis FAQ (1)

Recently, alicloud is preparing for the next interview, including redis and redis as the key content.

Redis is an open-source log-type and key-value database written in ansi c language that supports Network, memory-based persistence, and provides APIs in multiple languages. It supports the following types of storage: String, list, set, zset, sorted set, and hash ).

 

 

Related Knowledge: When the redis memory dataset size increases to a certain size, a data elimination policy (recovery policy) will be implemented ).

 

 

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#!/usr/bin/env python3import redis import sys import time  r = redis.StrictRedis(host=’127.0.0.1′, port=6379, db=0) try:       id = sys.argv[1]except:       print(‘input argument error’)     sys.exit(0) if r.llen(id) >= 5 and time.time() – float(r.lindex(id, 4)) <= 3600:       print(“you are forbidden logining”)else:       print(‘you are allowed to login’)     r.lpush(id, time.time())     # login_func()

　　

 

 

The following describes the author and version history of apsaradb for redis:

The author of redis, salvatoresanfilippo, is from Sicily, Italy and now lives in Catania. He currently works at pivotal. The network name used is antirez.

September August 02, 2012: redis2.4.16 was slightly updated with nosql;

September August 31, 2012: redis2.4.17 was slightly updated with nosql;

April November 7, 2012: redis 2.6.3 was released, featuring a high-performance K/V server;

July 13, April 30, 2013: redis2.6.13 was released with a high-performance K/V server;

November 25, 2013: redis2.8.1 was released;

April February 2015: redis3.0.0 was released.

Cartoon | redis FAQ (1)