Redis 命令 - Strings
APPEND key value
Available since 2.0.0, Time complexity: O(1).
Append a value to a key
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> APPEND foo world
(integer) 10
127.0.0.1:6379> GET foo
"helloworld"
127.0.0.1:6379> APPEND bar hello
(integer) 5
127.0.0.1:6379> GET bar
"hello"
More: http://redis.io/commands/append, http://www.redis.cn/commands/append.html
BITCOUNT key [start end]
Count set bits in a string
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> BITCOUNT foo
(integer) 21
More: http://redis.io/commands/bitcount, http://www.redis.cn/commands/bitcount.html
BITOP operation destkey key [key ...]
Perform bitwise operations between strings
127.0.0.1:6379> SET key1 aba
OK
127.0.0.1:6379> SET key2 abb
OK
127.0.0.1:6379> BITOP OR dest key1 key2
(integer) 3
127.0.0.1:6379> GET dest
"abc"
More: http://redis.io/commands/bitop, http://www.redis.cn/commands/bitop.html
BITPOS key bit [start] [end]
Find first bit set or clear in a string
127.0.0.1:6379> SET foo "\xff\xf0\x00"
OK
127.0.0.1:6379> BITPOS foo 0
(integer) 12
127.0.0.1:6379> SET foo "\x00\xff\xf0"
OK
127.0.0.1:6379> BITPOS foo 1
(integer) 8
More: http://redis.io/commands/bitpos
DECR key
Decrement the integer value of a key by one
127.0.0.1:6379> SET foo 10
OK
127.0.0.1:6379> DECR foo
(integer) 9
127.0.0.1:6379> DECR foo
(integer) 8
127.0.0.1:6379> DECR bar
(integer) -1
More: http://redis.io/commands/decr, http://www.redis.cn/commands/decr.html
DECRBY key decrement
Decrement the integer value of a key by the given number
127.0.0.1:6379> SET foo 10
OK
127.0.0.1:6379> DECRBY foo 3
(integer) 7
127.0.0.1:6379> DECRBY foo 4
(integer) 3
More: http://redis.io/commands/decrby, http://www.redis.cn/commands/decrby.html
GET key
Get the value of a key
127.0.0.1:6379> GET foo
(nil)
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> GET foo
"hello"
More: http://redis.io/commands/get, http://www.redis.cn/commands/get.html
GETBIT key offset
Returns the bit value at offset in the string value stored at key
# binary of code a's ASCII is 01100001
127.0.0.1:6379> SET foo a
OK
127.0.0.1:6379> GETBIT foo 0
(integer) 0
127.0.0.1:6379> GETBIT foo 1
(integer) 1
127.0.0.1:6379> GETBIT foo 2
(integer) 1
127.0.0.1:6379> GETBIT foo 3
(integer) 0
127.0.0.1:6379> GETBIT foo 4
(integer) 0
127.0.0.1:6379> GETBIT foo 5
(integer) 0
127.0.0.1:6379> GETBIT foo 6
(integer) 0
127.0.0.1:6379> GETBIT foo 7
(integer) 1
More: http://redis.io/commands/getbit, http://www.redis.cn/commands/getbit.html
GETRANGE key start end
Get a substring of the string stored at a key
127.0.0.1:6379> SET foo helloworld
OK
127.0.0.1:6379> GETRANGE foo 0 3
"hell"
127.0.0.1:6379> GETRANGE foo 3 5
"low"
127.0.0.1:6379> GETRANGE foo 5 -1
"world"
More: http://redis.io/commands/getrange, http://www.redis.cn/commands/getrange.html
GETSET key value
Set the string value of a key and return its old value
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> GETSET foo world
"hello"
127.0.0.1:6379> GET foo
"world"
More: http://redis.io/commands/getset, http://www.redis.cn/commands/getset.html
INCR key
Increment the integer value of a key by one
127.0.0.1:6379> SET foo 10
OK
127.0.0.1:6379> INCR foo
(integer) 11
127.0.0.1:6379> INCR foo
(integer) 12
127.0.0.1:6379> INCR bar
(integer) 1
More: http://redis.io/commands/incr, http://www.redis.cn/commands/incr.html
INCRBY key increment
Increment the integer value of a key by the given amount
127.0.0.1:6379> SET foo 10
OK
127.0.0.1:6379> INCRBY foo 2
(integer) 12
127.0.0.1:6379> INCRBY foo 3
(integer) 15
127.0.0.1:6379> INCRBY bar 4
(integer) 4
More: http://redis.io/commands/incrby, http://www.redis.cn/commands/incrby.html
INCRBYFLOAT key increment
Increment the float value of a key by the given amount
127.0.0.1:6379> SET foo 10
OK
127.0.0.1:6379> INCRBYFLOAT foo 2.3
"12.3"
127.0.0.1:6379> INCRBYFLOAT foo 5.8E2
"592.29999999999999999"
127.0.0.1:6379>
127.0.0.1:6379> INCRBYFLOAT bar 3.33
"3.33"
More: http://redis.io/commands/incrbyfloat, http://www.redis.cn/commands/incrbyfloat.html
MGET key [key ...]
Get the values of all the given keys
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> SET bar world
OK
127.0.0.1:6379> MGET foo bar
1) "hello"
2) "world"
More: http://redis.io/commands/mget, http://www.redis.cn/commands/mget.html
MSET key value [key value ...]
Set multiple keys to multiple values
127.0.0.1:6379> MSET foo hello bar world
OK
127.0.0.1:6379> MGET foo bar
1) "hello"
2) "world"
More: http://redis.io/commands/mset, http://www.redis.cn/commands/mset.html
MSETNX key value [key value ...]
Set multiple keys to multiple values, only if none of the keys exist
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> MSETNX foo world bar world
(integer) 0
127.0.0.1:6379> MGET foo bar
1) "hello"
2) (nil)
More: http://redis.io/commands/msetnx, http://www.redis.cn/commands/msetnx.html
PSETEX key milliseconds value
Set the value and expiration in milliseconds of a key
127.0.0.1:6379> PSETEX foo 10000 hello
OK
127.0.0.1:6379> PTTL foo
(integer) 8404
127.0.0.1:6379> GET foo
"hello"
127.0.0.1:6379> PTTL foo
(integer) -2
127.0.0.1:6379> GET foo
(nil)
More: http://redis.io/commands/psetex, http://www.redis.cn/commands/psetex.html
SET key value [EX seconds] [PX milliseconds] [NX|XX]
Set the string value of a key
127.0.0.1:6379> SET foo hello
OK
127.0.0.1:6379> GET foo
"hello"
More: http://redis.io/commands/set, http://www.redis.cn/commands/set.html
SETBIT key offset value
Sets or clears the bit at offset in the string value stored at key
127.0.0.1:6379> SET foo a
OK
127.0.0.1:6379> GETBIT foo 7
(integer) 1
127.0.0.1:6379> SETBIT foo 7 0
(integer) 1
More: http://redis.io/commands/setbit, http://www.redis.cn/commands/setbit.html
SETEX key seconds value
Set the value and expiration of a key
127.0.0.1:6379> SETEX foo 10 hello
OK
127.0.0.1:6379> TTL foo
(integer) 8
127.0.0.1:6379> GET foo
"hello"
127.0.0.1:6379> TTL foo
(integer) -2
127.0.0.1:6379> GET foo
(nil)
More: http://redis.io/commands/setex, http://www.redis.cn/commands/setex.html
SETNX key value
Set the value of a key, only if the key does not exist
127.0.0.1:6379> SETNX foo hello
(integer) 1
127.0.0.1:6379> GET foo
"hello"
127.0.0.1:6379> SETNX foo world
(integer) 0
127.0.0.1:6379> GET foo
"hello"
More: http://redis.io/commands/setnx, http://www.redis.cn/commands/msetnx.html
SETRANGE key offset value
Overwrite part of a string at key starting at the specified offset
127.0.0.1:6379> SET foo helloworld
OK
127.0.0.1:6379> SETRANGE foo 5 redis
(integer) 10
127.0.0.1:6379> GET foo
"helloredis"
More: http://redis.io/commands/setrange, http://www.redis.cn/commands/setrange.html
STRLEN key
Get the length of the value stored in a key
127.0.0.1:6379> set foo hello
OK
127.0.0.1:6379> STRLEN foo
(integer) 5
More: http://redis.io/commands/strlen, http://www.redis.cn/commands/strlen.html
Redis 命令 - Strings的更多相关文章
- 常用 redis 命令（for php）
Redis 主要能存储 5 种数据结构,分别是 strings,hashes,lists,sets 以及 sorted sets. 新建一个 redis 数据库 $redis = new Redis( ...
- redis命令大全
redis windows下使用及redis命令 Redis 是一个开源,高级的键值对的存储.它经常作为服务端的数据结构,它的键的数据类型能够是strings, hashs, lists, sets( ...
- Redis数据类型Strings、Lists常用操作指令
Redis数据类型Strings.Lists常用操作指令 Strings常用操作指令 GET.SET相关操作 # GET 获取键值对 127.0.0.1:6379> get name (nil) ...
- Redis命令拾遗二（散列类型）
本文版权归博客园和作者吴双共同所有,欢迎转载,转载和爬虫请注明原文地址 :博客园蜗牛NoSql系列地址 http://www.cnblogs.com/tdws/tag/NoSql/ Redis命令拾 ...
- redis命令总结
Redis命令总结 redis 127.0.0.1:6379> info #查看server版本内存使用连接等信息 redis 127.0.0.1:6379> client list ...
- redis如何执行redis命令
Redis 命令 Redis 命令用于在 redis 服务上执行操作.所以我们必须要启动Redis服务程序,也就是redis安装目录下的redis-server.exe,你可以双击执行,也可以打开cm ...
- Redis命令大全&中文解释&在线测试命令工具&在线中文文档
在线测试命令地址:http://try.redis.io/ 官方文档:http://redis.io/commands http://redis.io/documentation Redis 命令参考 ...
- Redis命令
redis的常用命令主要分为两个方面.一个是键值相关命令.一个是服务器相关命令(redis-cli进入终端) 1.键值相关命令 keys * 取出当前所有的key exists name 查看n是否有 ...
- redis命令参考
http://doc.redisfans.com/ 进入redis命令行模式方式: 1.进入redis安装目录 2.运行redis-cli
随机推荐
- Base64.java 工具类
import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOExceptio ...
- hdu 4781 Assignment For Princess (2013ACMICPC 成都站 A)
http://acm.hdu.edu.cn/showproblem.php?pid=4781 由于题目太长,这里就不直接贴了,直接说大意吧. 题目大意:有一个n个点,m条边的有向图,每条边的权值分别为 ...
- FOR XML PATH的用法
USE [ChangHongWMS612]GO/****** Object: StoredProcedure [dbo].[st_WMS_SelStockInBillList] Script Date ...
- [前端JS学习笔记]JavaScript CallBack
一.概念介绍 CallBack : "回调" . 在spring优秀框架回调无处不在, 回调的运用场景很多, 如 swt事件监听.netty等.它的主要作用是提高程序执行效率, 一 ...
- iis 启用父目录路径访问
今天公司有个客户保修网站后台无法访问,我查看了源代码,发现ASP代码本身并没有什么问题.而且我下到本地能够访问.就是在网上不能正常连接,显示入下错误: Server.MapPath() 错误 'ASP ...
- Hyper-V故障转移群集
Hyper-V故障转移群集配置完成后,在故障转移群集管理器中新建虚机:角色-虚拟机-新建虚拟机 如果直接在Hyper-V管理器中新建虚机,则不是高可用,需要在故障转移群集管理器中将其添加进来使其成为高 ...
- TransactionScope使用
public void FixProjectSorceInsert() { TransactionOptions transactionOption = new TransactionOptions( ...
- visualsvn server 报错 can't read file "current":End of file out
需要删除文件:Repositories\ProjectName\db\revprops\X 需要修改文件:repository/db/txn_current.repository/db/current ...
- 如何在Swift里用UnsafeMutablePointer
下午在适配iPadUI的时候,用到了UIPopoverPresentationController,然后在转屏的时候需要调用UIPopoverPresentationControllerDelegat ...
- FatMouse' Trade
/* problem: FatMouse' Trade this is greedy problem. firstly:we should calculate the average J[i]/F[i ...