redis学习及实践3---Jedis、JedisPool、Jedis分布式实例介绍
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package
com.pptv.redis;
import
java.util.ArrayList;
import
java.util.HashMap;
import
java.util.Iterator;
import
java.util.List;
import
java.util.Map;
import
java.util.Set;
import
redis.clients.jedis.Jedis;
public
class
JedisDemo {
public
void
test(){
Jedis redis =
new
Jedis (
"172.0.0.1"
,
6379
);
//连接redis
redis.auth(
"redis"
);
//验证密码,如果需要验证的话
// STRING 操作
//SET key value将字符串值value关联到key。
redis.set(
"name"
,
"wangjun1"
);
redis.set(
"id"
,
"123456"
);
redis.set(
"address"
,
"guangzhou"
);
//SETEX key seconds value将值value关联到key,并将key的生存时间设为seconds(以秒为单位)。
redis.setex(
"foo"
,
5
,
"haha"
);
//MSET key value [key value ...]同时设置一个或多个key-value对。
redis.mset(
"haha"
,
"111"
,
"xixi"
,
"222"
);
//redis.flushAll();清空所有的key
System.out.println(redis.dbSize());
//dbSize是多少个key的个数
//APPEND key value如果key已经存在并且是一个字符串,APPEND命令将value追加到key原来的值之后。
redis.append(
"foo"
,
"00"
);
//如果key已经存在并且是一个字符串,APPEND命令将value追加到key原来的值之后。
//GET key 返回key所关联的字符串值
redis.get(
"foo"
);
//MGET key [key ...] 返回所有(一个或多个)给定key的值
List list = redis.mget(
"haha"
,
"xixi"
);
for
(
int
i=
0
;i<list.size();i++){
System.out.println(list.get(i));
}
}
public
static
void
main(String[] args) {
JedisDemo t1 =
new
JedisDemo();
t1.test();
}
}
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#最大分配的对象数
redis.pool.maxActive=1024
#最大能够保持idel状态的对象数
redis.pool.maxIdle=200
#当池内没有返回对象时,最大等待时间
redis.pool.maxWait=1000
#当调用borrow Object方法时,是否进行有效性检查
redis.pool.testOnBorrow=true
#当调用return Object方法时,是否进行有效性检查
redis.pool.testOnReturn=true
#IP
redis.ip=172.0.0.1
#Port
redis.port=6379
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private
static
JedisPool pool;
static
{
ResourceBundle bundle = ResourceBundle.getBundle(
"redis"
);
if
(bundle ==
null
) {
throw
new
IllegalArgumentException(
"[redis.properties] is not found!"
);
}
JedisPoolConfig config =
new
JedisPoolConfig();
config.setMaxActive(Integer.valueOf(bundle
.getString(
"redis.pool.maxActive"
)));
config.setMaxIdle(Integer.valueOf(bundle
.getString(
"redis.pool.maxIdle"
)));
config.setMaxWait(Long.valueOf(bundle.getString(
"redis.pool.maxWait"
)));
config.setTestOnBorrow(Boolean.valueOf(bundle
.getString(
"redis.pool.testOnBorrow"
)));
config.setTestOnReturn(Boolean.valueOf(bundle
.getString(
"redis.pool.testOnReturn"
)));
pool =
new
JedisPool(config, bundle.getString(
"redis.ip"
),
Integer.valueOf(bundle.getString(
"redis.port"
)));
}
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// 从池中获取一个Jedis对象
Jedis jedis = pool.getResource();
String keys =
"name"
;
// 删数据
jedis.del(keys);
// 存数据
jedis.set(keys,
"snowolf"
);
// 取数据
String value = jedis.get(keys);
System.out.println(value);
// 释放对象池
pool.returnResource(jedis);
Redis服务器节点划分:将每台服务器节点采用hash算法划分为160个虚拟节点(可以配置划分权重)
将划分虚拟节点采用TreeMap存储
对每个Redis服务器的物理连接采用LinkedHashMap存储
对Key or KeyTag 采用同样的hash算法,然后从TreeMap获取大于等于键hash值得节点,取最邻近节点存储;当key的hash值大于虚拟节点hash值得最大值时,存入第一个虚拟节点
http://blog.csdn.net/yfkiss/article/details/7337382
https://sites.google.com/site/murmurhash/
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JedisShardInfo jedisShardInfo1 =
new
JedisShardInfo(
bundle.getString(
"redis1.ip"
), Integer.valueOf(bundle .getString(
"redis.port"
)));
JedisShardInfo jedisShardInfo2 =
new
JedisShardInfo(
bundle.getString(
"redis2.ip"
), Integer.valueOf(bundle .getString(
"redis.port"
)));
List<JedisShardInfo> list =
new
LinkedList<JedisShardInfo>();
list.add(jedisShardInfo1);
list.add(jedisShardInfo2);
1
ShardedJedisPool pool =
new
ShardedJedisPool(config, list);
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// 从池中获取一个Jedis对象
ShardedJedis jedis = pool.getResource();
String keys =
"name"
;
String value =
"snowolf"
;
// 删数据
jedis.del(keys);
// 存数据
jedis.set(keys, value);
// 取数据
String v = jedis.get(keys);
System.out.println(v);
// 释放对象池
pool.returnResource(jedis);
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package
com.pptv.redis;
import
java.util.ArrayList;
import
java.util.List;
import
redis.clients.jedis.Jedis;
import
redis.clients.jedis.JedisPool;
import
redis.clients.jedis.JedisPoolConfig;
import
redis.clients.jedis.JedisShardInfo;
import
redis.clients.jedis.ShardedJedis;
import
redis.clients.jedis.ShardedJedisPool;
/**
* redis的Java客户端Jedis测试验证
*
* @author
*/
public
class
Test {
/**
* 非切片客户端链接
*/
private
Jedis jedis;
/**
* 非切片链接池
*/
private
JedisPool jedisPool;
/**
* 切片客户端链接
*/
private
ShardedJedis shardedJedis;
/**
* 切片链接池
*/
private
ShardedJedisPool shardedJedisPool;
private
String ip =
"172.16.205.186"
;
/**
* 构造函数
*/
public
Test() {
initialPool();
initialShardedPool();
shardedJedis = shardedJedisPool.getResource();
jedis = jedisPool.getResource();
}
private
void
initialPool() {
// 池基本配置
JedisPoolConfig config =
new
JedisPoolConfig();
config.setMaxActive(
20
);
config.setMaxIdle(
5
);
config.setMaxWait(1000l);
config.setTestOnBorrow(
false
);
jedisPool =
new
JedisPool(config, ip,
6379
);
}
/**
* 初始化切片池
*/
private
void
initialShardedPool() {
// 池基本配置
JedisPoolConfig config =
new
JedisPoolConfig();
config.setMaxActive(
20
);
config.setMaxIdle(
5
);
config.setMaxWait(1000l);
config.setTestOnBorrow(
false
);
// slave链接
List<JedisShardInfo> shards =
new
ArrayList<JedisShardInfo>();
shards.add(
new
JedisShardInfo(ip,
6379
,
"master"
));
// 构造池
shardedJedisPool =
new
ShardedJedisPool(config, shards);
}
public
void
show() {
// key检测
testKey();
// string检测
testString();
// list检测
testList();
// set检测
testSet();
// sortedSet检测
testSortedSet();
// hash检测
testHash();
shardedJedisPool.returnResource(shardedJedis);
}
private
void
testKey() {
System.out.println(
"=============key=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
System.out.println(jedis.echo(
"foo"
));
// 判断key否存在
System.out.println(shardedJedis.exists(
"foo"
));
shardedJedis.set(
"key"
,
"values"
);
System.out.println(shardedJedis.exists(
"key"
));
}
private
void
testString() {
System.out.println(
"=============String=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
// 存储数据
shardedJedis.set(
"foo"
,
"bar"
);
System.out.println(shardedJedis.get(
"foo"
));
// 若key不存在,则存储
shardedJedis.setnx(
"foo"
,
"foo not exits"
);
System.out.println(shardedJedis.get(
"foo"
));
// 覆盖数据
shardedJedis.set(
"foo"
,
"foo update"
);
System.out.println(shardedJedis.get(
"foo"
));
// 追加数据
shardedJedis.append(
"foo"
,
" hello, world"
);
System.out.println(shardedJedis.get(
"foo"
));
// 设置key的有效期,并存储数据
shardedJedis.setex(
"foo"
,
2
,
"foo not exits"
);
System.out.println(shardedJedis.get(
"foo"
));
try
{
Thread.sleep(
3000
);
}
catch
(InterruptedException e) {
}
System.out.println(shardedJedis.get(
"foo"
));
// 获取并更改数据
shardedJedis.set(
"foo"
,
"foo update"
);
System.out.println(shardedJedis.getSet(
"foo"
,
"foo modify"
));
// 截取value的值
System.out.println(shardedJedis.getrange(
"foo"
,
1
,
3
));
System.out.println(jedis.mset(
"mset1"
,
"mvalue1"
,
"mset2"
,
"mvalue2"
,
"mset3"
,
"mvalue3"
,
"mset4"
,
"mvalue4"
));
System.out.println(jedis.mget(
"mset1"
,
"mset2"
,
"mset3"
,
"mset4"
));
System.out.println(jedis.del(
new
String[] {
"foo"
,
"foo1"
,
"foo3"
}));
}
private
void
testList() {
System.out.println(
"=============list=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
// 添加数据
shardedJedis.lpush(
"lists"
,
"vector"
);
shardedJedis.lpush(
"lists"
,
"ArrayList"
);
shardedJedis.lpush(
"lists"
,
"LinkedList"
);
// 数组长度
System.out.println(shardedJedis.llen(
"lists"
));
// 排序
// System.out.println(shardedJedis.sort("lists"));
// 字串
System.out.println(shardedJedis.lrange(
"lists"
,
0
,
3
));
// 修改列表中单个值
shardedJedis.lset(
"lists"
,
0
,
"hello list!"
);
// 获取列表指定下标的值
System.out.println(shardedJedis.lindex(
"lists"
,
1
));
// 删除列表指定下标的值
System.out.println(shardedJedis.lrem(
"lists"
,
1
,
"vector"
));
// 删除区间以外的数据
System.out.println(shardedJedis.ltrim(
"lists"
,
0
,
1
));
// 列表出栈
System.out.println(shardedJedis.lpop(
"lists"
));
// 整个列表值
System.out.println(shardedJedis.lrange(
"lists"
,
0
, -
1
));
}
private
void
testSet() {
System.out.println(
"=============set=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
// 添加数据
shardedJedis.sadd(
"sets"
,
"HashSet"
);
shardedJedis.sadd(
"sets"
,
"SortedSet"
);
shardedJedis.sadd(
"sets"
,
"TreeSet"
);
// 判断value是否在列表中
System.out.println(shardedJedis.sismember(
"sets"
,
"TreeSet"
));
;
// 整个列表值
System.out.println(shardedJedis.smembers(
"sets"
));
// 删除指定元素
System.out.println(shardedJedis.srem(
"sets"
,
"SortedSet"
));
// 出栈
System.out.println(shardedJedis.spop(
"sets"
));
System.out.println(shardedJedis.smembers(
"sets"
));
//
shardedJedis.sadd(
"sets1"
,
"HashSet1"
);
shardedJedis.sadd(
"sets1"
,
"SortedSet1"
);
shardedJedis.sadd(
"sets1"
,
"TreeSet"
);
shardedJedis.sadd(
"sets2"
,
"HashSet2"
);
shardedJedis.sadd(
"sets2"
,
"SortedSet1"
);
shardedJedis.sadd(
"sets2"
,
"TreeSet1"
);
// 交集
System.out.println(jedis.sinter(
"sets1"
,
"sets2"
));
// 并集
System.out.println(jedis.sunion(
"sets1"
,
"sets2"
));
// 差集
System.out.println(jedis.sdiff(
"sets1"
,
"sets2"
));
}
private
void
testSortedSet() {
System.out.println(
"=============zset=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
// 添加数据
shardedJedis.zadd(
"zset"
,
10.1
,
"hello"
);
shardedJedis.zadd(
"zset"
,
10.0
,
":"
);
shardedJedis.zadd(
"zset"
,
9.0
,
"zset"
);
shardedJedis.zadd(
"zset"
,
11.0
,
"zset!"
);
// 元素个数
System.out.println(shardedJedis.zcard(
"zset"
));
// 元素下标
System.out.println(shardedJedis.zscore(
"zset"
,
"zset"
));
// 集合子集
System.out.println(shardedJedis.zrange(
"zset"
,
0
, -
1
));
// 删除元素
System.out.println(shardedJedis.zrem(
"zset"
,
"zset!"
));
System.out.println(shardedJedis.zcount(
"zset"
,
9.5
,
10.5
));
// 整个集合值
System.out.println(shardedJedis.zrange(
"zset"
,
0
, -
1
));
}
private
void
testHash() {
System.out.println(
"=============hash=========================="
);
// 清空数据
System.out.println(jedis.flushDB());
// 添加数据
shardedJedis.hset(
"hashs"
,
"entryKey"
,
"entryValue"
);
shardedJedis.hset(
"hashs"
,
"entryKey1"
,
"entryValue1"
);
shardedJedis.hset(
"hashs"
,
"entryKey2"
,
"entryValue2"
);
// 判断某个值是否存在
System.out.println(shardedJedis.hexists(
"hashs"
,
"entryKey"
));
// 获取指定的值
System.out.println(shardedJedis.hget(
"hashs"
,
"entryKey"
));
// 批量获取指定的值
System.out
.println(shardedJedis.hmget(
"hashs"
,
"entryKey"
,
"entryKey1"
));
// 删除指定的值
System.out.println(shardedJedis.hdel(
"hashs"
,
"entryKey"
));
// 为key中的域 field 的值加上增量 increment
System.out.println(shardedJedis.hincrBy(
"hashs"
,
"entryKey"
, 123l));
// 获取所有的keys
System.out.println(shardedJedis.hkeys(
"hashs"
));
// 获取所有的values
System.out.println(shardedJedis.hvals(
"hashs"
));
}
/**
* @param args
*/
public
static
void
main(String[] args) {
new
Test().show();
}
}
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