rendis分布式缓存应用-安装-性能测试，报错make[3]: Entering directory

技术2024-10-28 23

1.centos安装

jar包准备

2.解压redis

[cevent@hadoop213 redis-3.0.4]$ tar -zxvf redis-3.0.4.tar.gz -C /opt/module/ [cevent@hadoop213 soft]$ cd /opt/module/ [cevent@hadoop213 module]$ ll 总用量 12 drwxr-xr-x. 12 cevent cevent 4096 7月 1 13:43 hadoop-2.7.2 drwxr-xr-x. 8 cevent cevent 4096 3月 24 09:14 jdk1.7.0_79 drwxrwxr-x. 6 cevent cevent 4096 9月 8 2015 redis-3.0.4 [cevent@hadoop213 module]$ cd redis-3.0.4/ [cevent@hadoop213 redis-3.0.4]$ ll 总用量 148 -rw-rw-r--. 1 cevent cevent 31391 9月 8 2015 00-RELEASENOTES -rw-rw-r--. 1 cevent cevent 53 9月 8 2015 BUGS -rw-rw-r--. 1 cevent cevent 1439 9月 8 2015 CONTRIBUTING -rw-rw-r--. 1 cevent cevent 1487 9月 8 2015 COPYING drwxrwxr-x. 6 cevent cevent 4096 9月 8 2015 deps -rw-rw-r--. 1 cevent cevent 11 9月 8 2015 INSTALL -rw-rw-r--. 1 cevent cevent 151 9月 8 2015 Makefile -rw-rw-r--. 1 cevent cevent 4223 9月 8 2015 MANIFESTO -rw-rw-r--. 1 cevent cevent 5201 9月 8 2015 README -rw-rw-r--. 1 cevent cevent 41403 9月 8 2015 redis.conf -rwxrwxr-x. 1 cevent cevent 271 9月 8 2015 runtest -rwxrwxr-x. 1 cevent cevent 280 9月 8 2015 runtest-cluster -rwxrwxr-x. 1 cevent cevent 281 9月 8 2015 runtest-sentinel -rw-rw-r--. 1 cevent cevent 7109 9月 8 2015 sentinel.conf drwxrwxr-x. 2 cevent cevent 4096 9月 8 2015 src drwxrwxr-x. 10 cevent cevent 4096 9月 8 2015 tests drwxrwxr-x. 5 cevent cevent 4096 9月 8 2015 utils

3.make报错

[cevent@hadoop213 redis-3.0.4]$ make cd src && make all make[1]: Entering directory `/opt/module/redis-3.0.4/src' rm -rf redis-server redis-sentinel redis-cli redis-benchmark redis-check-dump redis-check-aof *.o *.gcda *.gcno *.gcov redis.info lcov-html (cd ../deps && make distclean) make[2]: Entering directory `/opt/module/redis-3.0.4/deps' (cd hiredis && make clean) > /dev/null || true (cd linenoise && make clean) > /dev/null || true (cd lua && make clean) > /dev/null || true (cd jemalloc && [ -f Makefile ] && make distclean) > /dev/null || true (rm -f .make-*) make[2]: Leaving directory `/opt/module/redis-3.0.4/deps' (rm -f .make-*) echo STD=-std=c99 -pedantic >> .make-settings echo WARN=-Wall -W >> .make-settings echo OPT=-O2 >> .make-settings echo MALLOC=jemalloc >> .make-settings echo CFLAGS= >> .make-settings echo LDFLAGS= >> .make-settings echo REDIS_CFLAGS= >> .make-settings echo REDIS_LDFLAGS= >> .make-settings echo PREV_FINAL_CFLAGS=-std=c99 -pedantic -Wall -W -O2 -g -ggdb -I../deps/hiredis -I../deps/linenoise -I../deps/lua/src -DUSE_JEMALLOC -I../deps/jemalloc/include >> .make-settings echo PREV_FINAL_LDFLAGS= -g -ggdb -rdynamic >> .make-settings (cd ../deps && make hiredis linenoise lua jemalloc) make[2]: Entering directory `/opt/module/redis-3.0.4/deps' (cd hiredis && make clean) > /dev/null || true (cd linenoise && make clean) > /dev/null || true (cd lua && make clean) > /dev/null || true (cd jemalloc && [ -f Makefile ] && make distclean) > /dev/null || true (rm -f .make-*) (echo "" > .make-ldflags) (echo "" > .make-cflags) MAKE hiredis cd hiredis && make static make[3]: Entering directory `/opt/module/redis-3.0.4/deps/hiredis' gcc -std=c99 -pedantic -c -O3 -fPIC -Wall -W -Wstrict-prototypes -Wwrite-strings -g -ggdb net.c make[3]: gcc：命令未找到 make[3]: *** [net.o] 错误 127 make[3]: Leaving directory `/opt/module/redis-3.0.4/deps/hiredis' make[2]: *** [hiredis] 错误 2 make[2]: Leaving directory `/opt/module/redis-3.0.4/deps' make[1]: [persist-settings] 错误 2 (忽略) CC adlist.o /bin/sh: cc: command not found make[1]: *** [adlist.o] 错误 127 make[1]: Leaving directory `/opt/module/redis-3.0.4/src' make: *** [all] 错误 2

4.GCC介绍

gcc是linux下的一个编译程序，是C程序的编译工具。 GCC(GNU Compiler Collection) 是 GNU(GNU's Not Unix) 计划提供的编译器家族，它能够支持 C, C++, Objective-C, Fortran, Java 和 Ada 等等程序设计语言前端，同时能够运行在 x86, x86-64, IA-64, PowerPC, SPARC 和 Alpha 等等几乎目前所有的硬件平台上。鉴于这些特征，以及 GCC 编译代码的高效性，使得 GCC 成为绝大多数自由软件开发编译的首选工具。虽然对于程序员们来说，编译器只是一个工具，除了开发和维护人员，很少有人关注编译器的发展，但是 GCC 的影响力是如此之大，它的性能提升甚至有望改善所有的自由软件的运行效率，同时它的内部结构的变化也体现出现代编译器发展的新特征。

5.配置yum

[cevent@hadoop213 ~]$ cd /etc/yum.repos.d/ [cevent@hadoop213 yum.repos.d]$ ll 总用量 28 -rw-r--r--. 1 root root 1881 3月 14 10:02 CentOS-Base.repo -rw-r--r--. 1 root root 1991 5月 19 2016 CentOS-Base.repo.bak -rw-r--r--. 1 root root 647 5月 19 2016 CentOS-Debuginfo.repo -rw-r--r--. 1 root root 289 5月 19 2016 CentOS-fasttrack.repo -rw-r--r--. 1 root root 630 5月 19 2016 CentOS-Media.repo -rw-r--r--. 1 root root 6259 5月 19 2016 CentOS-Vault.repo [cevent@hadoop213 yum.repos.d]$ sudo vi CentOS-Base.repo [sudo] password for cevent: # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base - 163.com baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/ #mirrorlist=file:///mnt/cdrom gpgcheck=1 enable=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-$releasever - Updates - 163.com baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - 163.com baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus - 163.com baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib - 163.com baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

6.安装GCC（yum）

[cevent@hadoop213 CentOS_6.8_Final]$ yum -y install gcc 已加载插件：fastestmirror, refresh-packagekit, security 你需要以 root 身份执行此命令。 [cevent@hadoop213 CentOS_6.8_Final]$ sudo yum -y install gcc [sudo] password for cevent: 已加载插件：fastestmirror, refresh-packagekit, security 设置安装进程 Loading mirror speeds from cached hostfile base | 3.7 kB 00:00 base/primary_db | 4.7 MB 00:01 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 解决依赖关系 --> 执行事务检查 ---> Package gcc.x86_64 0:4.4.7-23.el6 will be 安装 --> 处理依赖关系 libgomp = 4.4.7-23.el6，它被软件包 gcc-4.4.7-23.el6.x86_64 需要 --> 处理依赖关系 cpp = 4.4.7-23.el6，它被软件包 gcc-4.4.7-23.el6.x86_64 需要 --> 处理依赖关系 libgcc >= 4.4.7-23.el6，它被软件包 gcc-4.4.7-23.el6.x86_64 需要 --> 处理依赖关系 cloog-ppl >= 0.15，它被软件包 gcc-4.4.7-23.el6.x86_64 需要 --> 执行事务检查作为依赖被安装: cloog-ppl.x86_64 0:0.15.7-1.2.el6 cpp.x86_64 0:4.4.7-23.el6 mpfr.x86_64 0:2.4.1-6.el6 ppl.x86_64 0:0.10.2-11.el6 作为依赖被升级: libgcc.i686 0:4.4.7-23.el6 libgcc.x86_64 0:4.4.7-23.el6 libgomp.x86_64 0:4.4.7-23.el6 完毕！ [cevent@hadoop213 CentOS_6.8_Final]$ yum -y install gcc-c++ 已加载插件：fastestmirror, refresh-packagekit, security 你需要以 root 身份执行此命令。 [cevent@hadoop213 CentOS_6.8_Final]$ sudo yum -y install gcc-c++ 已加载插件：fastestmirror, refresh-packagekit, security 设置安装进程已安装: gcc-c++.x86_64 0:4.4.7-23.el6 作为依赖被安装: libstdc++-devel.x86_64 0:4.4.7-23.el6 作为依赖被升级: libstdc++.x86_64 0:4.4.7-23.el6 完毕！ [cevent@hadoop213 CentOS_6.8_Final]$ gcc -v 使用内建 specs。目标：x86_64-redhat-linux 配置为：../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux 线程模型：posix gcc 版本 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC)

7.执行make distclean清洗之前的数据

[cevent@hadoop213 redis-3.0.4]$ make distclean cd src && make distclean make[1]: Entering directory `/opt/module/redis-3.0.4/src' rm -rf redis-server redis-sentinel redis-cli redis-benchmark redis-check-dump redis-check-aof *.o *.gcda *.gcno *.gcov redis.info lcov-html (cd ../deps && make distclean) make[2]: Entering directory `/opt/module/redis-3.0.4/deps' (cd hiredis && make clean) > /dev/null || true (cd linenoise && make clean) > /dev/null || true (cd lua && make clean) > /dev/null || true (cd jemalloc && [ -f Makefile ] && make distclean) > /dev/null || true (rm -f .make-*) make[2]: Leaving directory `/opt/module/redis-3.0.4/deps' (rm -f .make-*) make[1]: Leaving directory `/opt/module/redis-3.0.4/src' [cevent@hadoop213 redis-3.0.4]$ make 执行redis安装 LINK redis-server INSTALL redis-sentinel CC redis-cli.o LINK redis-cli CC redis-benchmark.o LINK redis-benchmark CC redis-check-dump.o LINK redis-check-dump CC redis-check-aof.o LINK redis-check-aof Hint: It's a good idea to run 'make test' ;) make[1]: Leaving directory `/opt/module/redis-3.0.4/src' [cevent@hadoop213 redis-3.0.4]$ make install 最终执行make install测试结果 cd src && make install make[1]: Entering directory `/opt/module/redis-3.0.4/src' Hint: It's a good idea to run 'make test' ;) INSTALL install INSTALL install INSTALL install INSTALL install INSTALL install make[1]: Leaving directory `/opt/module/redis-3.0.4/src'

8.安装redis程序的默认位置

[cevent@hadoop213 ~]$ cd /usr/local/bin/ [cevent@hadoop213 bin]$ ll 总用量 15464 -rwxr-xr-x. 1 cevent cevent 4589179 7月 1 17:56 redis-benchmark -rwxr-xr-x. 1 cevent cevent 22225 7月 1 17:56 redis-check-aof -rwxr-xr-x. 1 cevent cevent 45443 7月 1 17:56 redis-check-dump -rwxr-xr-x. 1 cevent cevent 4693138 7月 1 17:56 redis-cli lrwxrwxrwx. 1 cevent cevent 12 7月 1 17:56 redis-sentinel -> redis-server -rwxr-xr-x. 1 cevent cevent 6466413 7月 1 17:56 redis-server -rwxrwxrwx. 1 cevent cevent 316 7月 1 13:36 xcall -rwxrwxrwx. 1 cevent cevent 842 7月 1 13:33 xsync

9.编辑redis.conf

跳转到行尾：shift+$ # Redis configuration file example # Note on units: when memory size is needed, it is possible to specify # it in the usual form of 1k 5GB 4M and so forth: # # 1k => 1000 bytes # 1kb => 1024 bytes # 1m => 1000000 bytes # 1mb => 1024*1024 bytes # 1g => 1000000000 bytes # 1gb => 1024*1024*1024 bytes # # units are case insensitive so 1GB 1Gb 1gB are all the same. ################################## INCLUDES ################################### # Include one or more other config files here. This is useful if you # have a standard template that goes to all Redis servers but also need # to customize a few per-server settings. Include files can include # other files, so use this wisely. # # Notice option "include" won't be rewritten by command "CONFIG REWRITE" # from admin or Redis Sentinel. Since Redis always uses the last processed # line as value of a configuration directive, you'd better put includes # at the beginning of this file to avoid overwriting config change at runtime. # # If instead you are interested in using includes to override configuration # options, it is better to use include as the last line. # # include /path/to/local.conf # include /path/to/other.conf ################################ GENERAL ##################################### # By default Redis does not run as a daemon. Use 'yes' if you need it. # Note that Redis will write a pid file in /var/run/redis.pid when daemonized. # Redis configuration file example # Note on units: when memory size is needed, it is possible to specify # it in the usual form of 1k 5GB 4M and so forth: # # 1k => 1000 bytes # 1kb => 1024 bytes # 1m => 1000000 bytes # 1mb => 1024*1024 bytes # 1g => 1000000000 bytes # 1gb => 1024*1024*1024 bytes # # units are case insensitive so 1GB 1Gb 1gB are all the same. ################################## INCLUDES ################################### # Include one or more other config files here. This is useful if you # have a standard template that goes to all Redis servers but also need # to customize a few per-server settings. Include files can include # other files, so use this wisely. # # Notice option "include" won't be rewritten by command "CONFIG REWRITE" # from admin or Redis Sentinel. Since Redis always uses the last processed # line as value of a configuration directive, you'd better put includes # at the beginning of this file to avoid overwriting config change at runtime. # # If instead you are interested in using includes to override configuration # options, it is better to use include as the last line. # # include /path/to/local.conf # include /path/to/other.conf ################################ GENERAL ##################################### # By default Redis does not run as a daemon. Use 'yes' if you need it. # Note that Redis will write a pid file in /var/run/redis.pid when daemonized. daemonize yes # When running daemonized, Redis writes a pid file in /var/run/redis.pid by # default. You can specify a custom pid file location here. pidfile /var/run/redis.pid # Accept connections on the specified port, default is 6379. # If port 0 is specified Redis will not listen on a TCP socket. port 6379 默认端口 [cevent@hadoop213 redis-3.0.4]$ ps -ef | grep redis 查看redis启动状态 cevent 3081 2992 0 21:20 pts/0 00:00:00 grep redis

10.启动redis

[cevent@hadoop213 redis-3.0.4]$ redis-server redis.conf 启动redis服务 [cevent@hadoop213 redis-3.0.4]$ redis-cli -p 6379 启动redis客户端。端口号6379 127.0.0.1:6379> ping 进行试ping连接，成功返回pong PONG 127.0.0.1:6379> set k1 hello cevent 非法语句 (error) ERR syntax error 127.0.0.1:6379> set k1 hello redis严格按照key-value存放 OK 127.0.0.1:6379> get k1 获取k1 "hello" 127.0.0.1:6379> shutdown 停止redis not connected> exit

11.Redis基础-性能测试

[cevent@hadoop213 redis-3.0.4]$ redis-benchmark redis基准（测试redis性能） [cevent@hadoop213 redis-3.0.4]$ redis-benchmark Writing to socket: Connection refused 启动测试报错，需要关闭防火墙 [cevent@hadoop213 redis-3.0.4]$ sudo service iptables stop [sudo] password for cevent: 没有开启redis服务 [cevent@hadoop213 redis-3.0.4]$ redis-server redis.conf 开启redis服务 [cevent@hadoop213 redis-3.0.4]$ redis-benchmark 启动测试 ====== PING_INLINE ====== 100000 requests completed in 0.64 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.35% <= 1 milliseconds 99.92% <= 2 milliseconds 99.95% <= 84 milliseconds 99.95% <= 85 milliseconds 100.00% <= 85 milliseconds 155521.00 requests per second ====== PING_BULK ====== 100000 requests completed in 0.55 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.55% <= 1 milliseconds 100.00% <= 1 milliseconds 183150.19 requests per second ====== SET ====== 100000 requests completed in 0.56 seconds 处理10万个写入请求/0.56秒 50 parallel clients 3 bytes payload keep alive: 1 99.50% <= 1 milliseconds 100.00% <= 1 milliseconds 176991.16 requests per second ====== GET ====== 100000 requests completed in 0.56 seconds 处理10万个获取请求/0.56秒 50 parallel clients 3 bytes payload keep alive: 1 99.18% <= 1 milliseconds 99.98% <= 2 milliseconds 100.00% <= 2 milliseconds 177619.89 requests per second ====== INCR ====== 100000 requests completed in 0.55 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.47% <= 1 milliseconds 100.00% <= 1 milliseconds 182481.77 requests per second ====== LPUSH ====== 100000 requests completed in 0.61 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.16% <= 1 milliseconds 99.77% <= 2 milliseconds 99.83% <= 3 milliseconds 99.85% <= 12 milliseconds 99.91% <= 13 milliseconds 99.95% <= 34 milliseconds 100.00% <= 34 milliseconds 162866.44 requests per second ====== LPOP ====== 100000 requests completed in 0.55 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.63% <= 1 milliseconds 100.00% <= 1 milliseconds 181818.17 requests per second ====== SADD ====== 100000 requests completed in 0.57 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.42% <= 1 milliseconds 99.98% <= 28 milliseconds 100.00% <= 28 milliseconds 174216.03 requests per second ====== SPOP ====== 100000 requests completed in 0.54 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.57% <= 1 milliseconds 100.00% <= 1 milliseconds 186219.73 requests per second ====== LPUSH (needed to benchmark LRANGE) ====== 100000 requests completed in 0.56 seconds 50 parallel clients 3 bytes payload keep alive: 1 99.38% <= 1 milliseconds 99.85% <= 2 milliseconds 99.95% <= 12 milliseconds 100.00% <= 13 milliseconds 100.00% <= 13 milliseconds 177935.95 requests per second ====== LRANGE_100 (first 100 elements) ====== 100000 requests completed in 2.06 seconds 50 parallel clients 3 bytes payload keep alive: 1 92.17% <= 1 milliseconds 99.53% <= 2 milliseconds 99.95% <= 32 milliseconds 99.95% <= 74 milliseconds 99.95% <= 105 milliseconds 99.96% <= 106 milliseconds 100.00% <= 106 milliseconds 48449.61 requests per second ====== LRANGE_300 (first 300 elements) ====== 100000 requests completed in 5.14 seconds 50 parallel clients 3 bytes payload keep alive: 1 8.19% <= 1 milliseconds 90.99% <= 2 milliseconds 98.45% <= 3 milliseconds 99.93% <= 4 milliseconds 100.00% <= 4 milliseconds 19474.20 requests per second ====== LRANGE_500 (first 450 elements) ====== 100000 requests completed in 7.22 seconds 50 parallel clients 3 bytes payload keep alive: 1 1.27% <= 1 milliseconds 56.74% <= 2 milliseconds 92.31% <= 3 milliseconds 97.25% <= 4 milliseconds 99.59% <= 5 milliseconds 99.97% <= 6 milliseconds 100.00% <= 6 milliseconds 13860.01 requests per second ====== LRANGE_600 (first 600 elements) ====== 100000 requests completed in 9.40 seconds 50 parallel clients 3 bytes payload keep alive: 1 0.67% <= 1 milliseconds 20.65% <= 2 milliseconds 75.58% <= 3 milliseconds 89.51% <= 4 milliseconds 94.79% <= 5 milliseconds 98.49% <= 6 milliseconds 99.74% <= 7 milliseconds 99.91% <= 8 milliseconds 99.94% <= 9 milliseconds 99.95% <= 10 milliseconds 99.95% <= 36 milliseconds 99.96% <= 37 milliseconds 99.97% <= 38 milliseconds 100.00% <= 39 milliseconds 100.00% <= 39 milliseconds 10633.77 requests per second ====== MSET (10 keys) ====== 100000 requests completed in 1.13 seconds 50 parallel clients 3 bytes payload keep alive: 1 96.89% <= 1 milliseconds 100.00% <= 1 milliseconds 88652.48 requests per second

12.redis-默认16个库（hashSet的底层是hashMap，严格来说没有hashSet，只有hashMap）

[cevent@hadoop213 ~]$ redis-cli -p 6379 开启客户端 127.0.0.1:6379> ping PONG 127.0.0.1:6379> get k1 当前在0库 "hello" 127.0.0.1:6379> select 6 当前在7库（select切换数据库） OK 127.0.0.1:6379[6]> get k1 库7中没有k1内容 (nil) 127.0.0.1:6379[6]> select 0 转换到库0 OK 127.0.0.1:6379> get k1 "hello" 127.0.0.1:6379> DBSIZE 获取当前key数量 (integer) 4 默认开启3个key 127.0.0.1:6379> KEYS * 1) "key:__rand_int__" 2) "mylist" 3) "k1" 4) "counter:__rand_int__" 127.0.0.1:6379> set k2 value2 创建k2 OK 127.0.0.1:6379> set k3 value3 创建k3 OK 127.0.0.1:6379> dbsize (integer) 6 127.0.0.1:6379> keys * 1) "key:__rand_int__" 2) "mylist" 3) "k1" 4) "counter:__rand_int__" 5) "k3" 6) "k2" 127.0.0.1:6379> keys k? 模糊查看k后缀？ 1) "k1" 2) "k3" 3) "k2" 127.0.0.1:6379> FLUSHDB 清洗库（16个库数据全清） 127.0.0.1:6379> KEYS * (empty list or set) 127.0.0.1:6379> set k1 value1 创建0库k1 OK 127.0.0.1:6379> set k2 value2 OK 127.0.0.1:6379> set k3 value3 OK 127.0.0.1:6379> select 1 进入k1库 OK 127.0.0.1:6379[1]> set class cevent OK 127.0.0.1:6379[1]> set k3 cevent3 创建k3值 OK 127.0.0.1:6379[1]> keys * 1) "k3" 2) "class" 127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> FLUSHALL 清洗数据 OK 127.0.0.1:6379> keys * (empty list or set)

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