redis 127.0.0.1:6479> set test test
OK
redis 127.0.0.1:6479> get test
"test"
与你熟悉的关系型数据库一致,Redis有着相同的数据库基本概念,即一个数据库包含一组数据。
典型的数据库应用案例是,将一个程序的所有数据组织起来,使之与另一个程序的数据保持独立。 在Redis里,数据库简单的使用一个数字编号来进行辨认,默认数据库的数字编号是0。如果你想切换到一个不同的数据库,你可以使用select命令来实现。在命令行界面里键入select 1,Redis应该会回复一条OK的信息,然后命令行界面里的提示符会变成类似redis 127.0.0.1:6379[1]>这样。如果你想切换回默认数据库,只要在命令行界面键入select 0即可。
[iyunv@localhost src]# ./redis-server
[7419] 11 May 18:09:10.311 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf
[7419] 11 May 18:09:10.312 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 2.8.9 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in stand alone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 7419
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
[7419] 11 May 18:09:10.313 # Server started, Redis version 2.8.9
[7419] 11 May 18:09:10.313 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
[7419] 11 May 18:09:10.314 * The server is now ready to accept connections on port 6379
很明显,这不符合我们的需求,我们需要让他后台打开,
vi /usr/local/redis/etc/redis.conf
将行 daemonize no 改为 daemonize yes
再次执行 redis-server /usr/local/redis/etc/redis.conf
redis 127.0.0.1:6479> set test test
OK
redis 127.0.0.1:6479> get test
"test"
到此Redis 安装成功.
Redis 客户端测试
Java 官方推荐客户端 Jedis
import java.util.Date;
import redis.clients.jedis.Jedis;
public class RedisTest {
public static void main(String[] args) {
long start = System.currentTimeMillis();
String host = "127.0.0.1";
int port = 6479, timeout = 30000;
Jedis jedis = new Jedis(host, port, timeout);
for (int i = 1; i errstr);
redisFree(c);
} else {
printf("Connection error: can't allocate redis context\n");
}
exit(1);
}
get_time();
printf("test_bach start");
for (int i = 1; i