问题描述
我想用python编写使用redis的应用程序.我用谷歌搜索但我找不到我的问题的任何结果.通常，我这样做:
I want to write application in python which uses redis. I googled but I could not find any results for my question. Usually, I do this:
import redis
rs = redis.Redis('localhost')
然后执行所有的获取和设置.但是我可以在 redis 中做这样的事情:
then do all gets and sets. But can I in redis do something like this:
rs1 = redis.Redis('app1')
rs2 = redis.Redis('app2')
我的意思是，我想使用两个或多个实例，每个实例存储不同的内容(例如 rs1 用于 url，rs2 用于标头等......).而且我还想知道如何删除所有键(例如在 rs1 中删除所有记录).有什么好的教程，资源?注意:我需要使用redis，因为我需要进行快速检查和存储，比如爬虫的url-seen.
I mean, I want to use two or more instances, each of which stores different things (for example rs1 for urls, rs2 for headers, etc...).And also I want to know how to delete all keys (for example in rs1 delete all records).Any good tutorial, resource?Note: I need to use redis because I need to preform fast check and store, like url-seen for crawler.
推荐答案
如中所示文档的入门部分 redis.Redis 和 redis.StrictRedis 都采用整数 db 参数作为构造函数参数.这将为您提供一个有效的孤立实例.
As showed in the getting started section of the docs redis.Redis and redis.StrictRedis both take an integer db argument as a constructor parameter. That will get you an effectively silo'ed instance.
您可以执行以下操作:
rs1 = redis.Redis(host="localhost", db=0)
rs2 = redis.Redis(host="localhost", db=1)
flushdb() 将清除您连接的数据库的所有键，而 flushall() 将清除每个数据库的所有键.
flushdb() will clear all the keys for the database you are connected to, while flushall() will clear all the keys for every database.
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