1.window下使用
下载地址：http://pan.baidu.com/s/1gdCoKyn
然后运行redis-server.exe
启动好服务如下，
2.打开cmd窗口，cd到目录C:\Users\Administrator\Desktop\redis-2.4.5-win32-win64\32bit
执行：redis-cli.exe（客户端）
3.redis命令-数据存储介绍
http://redis.io/topics/data-types-intro
官网的例子最好照着做一遍，能快速学会redis，除了最后Bitmap、lexicograpical这些比较难懂，而且也不见得常用到，而外基本都是比较通俗易懂的
4.Java访问redis-jedius
jedis-2.7.2.jar下载地址：http://pan.baidu.com/s/1o6mXYIm
给出一个jedius-api：http://tool.oschina.net/uploads/apidocs/
再给一个Java封装类：
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
public class RedisTool {
private static String redisHost = "127.0.0.1";
private static JedisPool pool = new JedisPool(redisHost);
// get命令,数据库默认选择序号为0
public static Object get(String key) {
Jedis jedis = null;
try {
jedis = pool.getResource();
byte[] data = jedis.get(key.getBytes());
if (data == null || data.length <= 0) {
return null;
}
return SerializeUtil.unserialize(data);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// get命令,第二个参数为选择数据库
public static Object get(String key, int dbIndex) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.select(dbIndex);
byte[] data = jedis.get(key.getBytes());
if (data == null || data.length <= 0) {
return null;
}
return SerializeUtil.unserialize(data);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// set命令,默认选择序号为0
public static void set(String key, Object value) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.set(key.getBytes(), SerializeUtil.serialize(value));
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// set命令,第二个参数为选择数据库
public static void set(String key, Object value, int dbIndex) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.select(dbIndex);
jedis.set(key.getBytes(), SerializeUtil.serialize(value));
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// hset命令，就是普通的Java-Map对象形式，key标识不同的Map对象，field为指定Map对象的键值
public static void hset(String key, String field, Object value) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.hset(key.getBytes(), field.getBytes(), SerializeUtil.serialize(value));
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// hget，就是获取指定key值的Map对象的field字段值
public static Object hget(String key, String field) {
Jedis jedis = null;
try {
jedis = pool.getResource();
byte[] data = jedis.hget(key.getBytes(), field.getBytes());
if (data == null || data.length <= 0) {
return null;
}
return SerializeUtil.unserialize(data);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// remove为移除一条记录
public static void remove(String key) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.del(key.getBytes());
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// redis实现的自动+1序列获取
public static long getAutoId(String key) {
Jedis jedis = null;
long id = 1;
try {
jedis = pool.getResource();
id = jedis.incr(key.getBytes());
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
return id;
}
// list-push，key标识某list对象，而且是left-push
public static void lpush(String key, Object value) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.lpush(key.getBytes(), SerializeUtil.serialize(value));
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// list-push，key标识某list对象，而且是right-push
public static void rpush(String key, Object value) {
Jedis jedis = null;
try {
jedis = pool.getResource();
jedis.rpush(key.getBytes(), SerializeUtil.serialize(value));
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
}
// 获取指定key值的list对象的所有元素
public static List<Object> lrange(String key) {
Jedis jedis = null;
List<Object> result = null;
try {
jedis = pool.getResource();
List<byte[]> list = jedis.lrange(key.getBytes(), 0, -1);
result = new ArrayList<Object>(list.size());
for (byte[] o : list) {
result.add(SerializeUtil.unserialize(o));
}
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
return result;
}
// left-pop一个指定key值的list对象
public static Object lpop(String key) {
Jedis jedis = null;
Object object = null;
try {
jedis = pool.getResource();
byte[] bs = jedis.lpop(key.getBytes());
object = SerializeUtil.unserialize(bs);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
return object;
}
// right-pop一个指定key值的list对象
public static Object rpop(String key) {
Jedis jedis = null;
Object object = null;
try {
jedis = pool.getResource();
byte[] bs = jedis.rpop(key.getBytes());
object = SerializeUtil.unserialize(bs);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
return object;
}
// list-index，查找指定key值的list对象的第index号元素
public static Object lindex(String key, int index) {
Jedis jedis = null;
Object object = null;
try {
jedis = pool.getResource();
byte[] bs = jedis.lindex(key.getBytes(), index);
object = SerializeUtil.unserialize(bs);
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
close(jedis);
}
return object;
}
// 关闭jedis
private static void close(Jedis jedis) {
if (jedis != null) {
jedis.close();
}
}
// list-length，获取指定key值的list对象的元素个数
public static long llen(String key) {
Jedis jedis = null;
long object;
try {
jedis = pool.getResource();
object = jedis.llen(key.getBytes());
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
if (jedis != null) {
jedis.close();
}
}
return object;
}
// 获取当前数据库（默认序号为0）的所有keys，相当于“keys *”命令
public static List<String> keys() {
Jedis jedis = null;
List<String> list = null;
try {
jedis = pool.getResource();
Set<byte[]> set = jedis.keys("*".getBytes());
list = new ArrayList<String>(set.size());
for (byte[] bs : set) {
list.add(new String(bs, "UTF8"));
}
} catch (Exception e) {
throw new RuntimeException("Redis出现错误！", e);
} finally {
if (jedis != null) {
jedis.close();
}
}
return list;
}
}
5.linux下安装redis
安装包为redis-3.0.4.tar.gz，给出下载地址：http://pan.baidu.com/s/1jGm0ncy
先cd到/usr/local/，然后mkdir一个文件夹redis，之后把redis-3.0.4.tar.gz拷贝到/usr/local/redis
解压，执行tar -cxvf redis-3.0.4.tar.gz
之后cd到redis-3.0.4，执行make命令
然后执行make install命令
完成以后redis服务自动启动，这次我的redis服务是部署在210.10.5.189上面，本机ip为210.10.5.102
打开cmd窗口，cd到有redis-cli.exe的那个目录下，C:\Users\Administrator\Desktop\redis-2.4.5-win32-win64\32bit，然后执行redis-cli.exe -h 210.10.5.189 -p 6379，如下
跟windows上部署的没什么区别了。
6.还有几个补充说明
6.1命令
flushdb--删除当前数据库中的所有Key flushall--删除所有数据库中的key
6.2 linux-redis查看启动进程：
ps -ef | grep redis
6.3 配置redis最大分配内存
vim redis.conf
修改maxmemory <bytes>为maxmemory <2147483648>
为防止内存全部被redis耗光，达到最大内存设置后，Redis会先尝试清除已到期或即将到期的Key，也会从free-list里清除一些key-value。当以上方法都没有效果，那redis就不再支持写入操作（如set，lpush），但不影响读操作如get。（maxmemory配置默认是注释掉的，没限制，跟RAM相同）
时间： 2024-10-11 08:03:46