Jedis设计
Jedis作为推荐的java语言redis客户端，其抽象封装为三部分：
- 对象池设计：Pool，JedisPool，GenericObjectPool，BasePoolableObjectFactory，JedisFactory
- 面向用户的redis操作封装：BinaryJedisCommands，JedisCommands，BinaryJedis，Jedis
- 面向redis服务器的操作封装：Commands，Client，BinaryClient，Connection，Protocol
其类设计图如下：
关于common-pool的相关内容，可以参见：http://macrochen.iteye.com/blog/320077
其他类的设计作用如下：
| 类名 | 职责 |
| Pool | 抽象Jedis对象池操作；并委托给操作给GenericObjectPool |
| JedisPool | 实现Pool并提供JedisFactory工厂 |
| JedisFactory | 实现BasePoolableObjectFactory，提供创建，销毁Jedis方法 |
| BinaryJedisCommands | 抽象面向客户端操作的Redis命令；key，value都为序列化后的byte数组 |
| JedisCommands | 抽象面向客户端操作的Redis命令；提供String类型的key，value |
| BinaryJedis | 实现BinaryJedisCommands接口，并将实际操作委托给Client |
| Jedis | 实现JedisCommands接口，并将操作委托给Client |
| Commands | 抽象Redis操作接口，提供String类型的key，value操作；被Jedis调用 |
| Connection | 抽象了Redis连接；包括host，port，pass，socket，inputstream,outputstream,protocol 完成与Redis服务器的通信 |
| Protocol | 抽象了Redis协议处理 |
| BinaryClient | 继承Connection类，封装了基于Byte[]的key，value操作 |
| Client | 继承BinaryClient同时实现了Commands，对上层提供基于String类型的操作 |
ShardedJedis实现分析
ShardedJedis是基于一致性哈希算法实现的分布式Redis集群客户端；ShardedJedis的设计分为以下几块：
- 对象池设计：Pool，ShardedJedisPool，ShardedJedisFactory
- 面向用户的操作封装：BinaryShardedJedis，BinaryShardedJedis
- 一致性哈希实现：Sharded
关于ShardedJedis设计，忽略了Jedis的设计细节，设计类图如下：
关于ShardedJedis类图设计，省略了对象池，以及Jedis设计的以下细节介绍：
| 类名 | 职责 |
| Sharded |
抽象了基于一致性哈希算法的划分设计，设计思路
|
| BinaryShardedJedis | 同BinaryJedis类似，实现BinaryJedisCommands对外提供基于Byte[]的key，value操作 |
| ShardedJedis | 同Jedis类似，实现JedisCommands对外提供基于String的key，value操作 |
Sharded一致性哈希实现
shared一致性哈希采用以下方案：
- 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
sharded采用的hash算法：MD5 和 MurmurHash两种；默认采用64位的MurmurHash算法；有兴趣的可以研究下，MurmurHash是一种高效，低碰撞的hash算法；参考地址：
spring集成配置例子
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"
default-lazy-init="true"> <description>Jedis Configuration</description> <!-- 加载配置属性文件 -->
<context:property-placeholder
ignore-unresolvable="true" location="classpath:jeesite.properties" /> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="300" /> <!-- 最大能够保持idel状态的对象数 -->
<property name="maxTotal" value="60000" /> <!-- 最大分配的对象数 -->
<property name="testOnBorrow" value="true" /> <!-- 当调用borrow Object方法时，是否进行有效性检查 -->
</bean> <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
<constructor-arg index="0" ref="jedisPoolConfig" />
<constructor-arg index="1" value="${redis.host}" />
<constructor-arg index="2" value="${redis.port}" type="int" />
</bean> <!-- jedis集群部署 -->
<bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool" destroy-method="destroy">
<constructor-arg ref="jedisPoolConfig" />
<constructor-arg>
<list>
<bean class="redis.clients.jedis.JedisShardInfo">
<constructor-arg value="127.0.0.1" />
<constructor-arg type="int" value="7000" />
<constructor-arg value="instance:01" />
</bean>
<bean class="redis.clients.jedis.JedisShardInfo">
<constructor-arg value="127.0.0.1" />
<constructor-arg type="int" value="7001" />
<constructor-arg value="instance:02" />
</bean>
<bean class="redis.clients.jedis.JedisShardInfo">
<constructor-arg value="127.0.0.1" />
<constructor-arg type="int" value="7003" />
<constructor-arg value="instance:03" />
</bean>
</list>
</constructor-arg>
</bean> </beans>
自己封装的SharedJedis操作客户端工具类：
import java.util.List;
import java.util.Map;
import java.util.Set; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.thinkgem.jeesite.common.config.Global; import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;
import redis.clients.jedis.exceptions.JedisException; /**
* ShardedJedis Cache 工具类
* redis集群部署时的工具类
*
*/
public class SharedJedisUtils { private static Logger logger = LoggerFactory.getLogger(SharedJedisUtils.class); private static ShardedJedisPool shardedJedisPool = SpringContextHolder.getBean(ShardedJedisPool.class); public static final String KEY_PREFIX = Global.getConfig("redis.keyPrefix"); /**
* 获取缓存
* @param key 键
* @return 值
*/
public static String get(String key) {
String value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
value = ShardedJedis.get(key);
value = StringUtils.isNotBlank(value) && !"nil".equalsIgnoreCase(value) ? value : null;
logger.debug("get {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("get {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 获取缓存
* @param key 键
* @return 值
*/
public static Object getObject(String key) {
Object value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
value = toObject(ShardedJedis.get(getBytesKey(key)));
logger.debug("getObject {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getObject {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 设置缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static String set(String key, String value, int cacheSeconds) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.set(key, value);
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("set {} = {}", key, value);
} catch (Exception e) {
logger.warn("set {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 设置缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static String setObject(String key, Object value, int cacheSeconds) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.set(getBytesKey(key), toBytes(value));
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setObject {} = {}", key, value);
} catch (Exception e) {
logger.warn("setObject {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 获取List缓存
* @param key 键
* @return 值
*/
public static List<String> getList(String key) {
List<String> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
value = ShardedJedis.lrange(key, 0, -1);
logger.debug("getList {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getList {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 获取List缓存
* @param key 键
* @return 值
*/
public static List<Object> getObjectList(String key) {
List<Object> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
List<byte[]> list = ShardedJedis.lrange(getBytesKey(key), 0, -1);
value = Lists.newArrayList();
for (byte[] bs : list){
value.add(toObject(bs));
}
logger.debug("getObjectList {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getObjectList {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 设置List缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static long setList(String key, List<String> value, int cacheSeconds) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
ShardedJedis.del(key);
}
result = ShardedJedis.rpush(key, (String[])value.toArray());
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setList {} = {}", key, value);
} catch (Exception e) {
logger.warn("setList {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 设置List缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static long setObjectList(String key, List<Object> value, int cacheSeconds) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
ShardedJedis.del(key);
}
List<byte[]> list = Lists.newArrayList();
for (Object o : value){
list.add(toBytes(o));
}
result = ShardedJedis.rpush(getBytesKey(key), (byte[][])list.toArray());
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setObjectList {} = {}", key, value);
} catch (Exception e) {
logger.warn("setObjectList {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向List缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static long listAdd(String key, String... value) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.rpush(key, value);
logger.debug("listAdd {} = {}", key, value);
} catch (Exception e) {
logger.warn("listAdd {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向List缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static long listObjectAdd(String key, Object... value) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
List<byte[]> list = Lists.newArrayList();
for (Object o : value){
list.add(toBytes(o));
}
result = ShardedJedis.rpush(getBytesKey(key), (byte[][])list.toArray());
logger.debug("listObjectAdd {} = {}", key, value);
} catch (Exception e) {
logger.warn("listObjectAdd {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 获取缓存
* @param key 键
* @return 值
*/
public static Set<String> getSet(String key) {
Set<String> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
value = ShardedJedis.smembers(key);
logger.debug("getSet {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getSet {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 获取缓存
* @param key 键
* @return 值
*/
public static Set<Object> getObjectSet(String key) {
Set<Object> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
value = Sets.newHashSet();
Set<byte[]> set = ShardedJedis.smembers(getBytesKey(key));
for (byte[] bs : set){
value.add(toObject(bs));
}
logger.debug("getObjectSet {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getObjectSet {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 设置Set缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static long setSet(String key, Set<String> value, int cacheSeconds) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
ShardedJedis.del(key);
}
result = ShardedJedis.sadd(key, (String[])value.toArray());
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setSet {} = {}", key, value);
} catch (Exception e) {
logger.warn("setSet {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 设置Set缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static long setObjectSet(String key, Set<Object> value, int cacheSeconds) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
ShardedJedis.del(key);
}
Set<byte[]> set = Sets.newHashSet();
for (Object o : value){
set.add(toBytes(o));
}
result = ShardedJedis.sadd(getBytesKey(key), (byte[][])set.toArray());
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setObjectSet {} = {}", key, value);
} catch (Exception e) {
logger.warn("setObjectSet {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向Set缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static long setSetAdd(String key, String... value) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.sadd(key, value);
logger.debug("setSetAdd {} = {}", key, value);
} catch (Exception e) {
logger.warn("setSetAdd {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向Set缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static long setSetObjectAdd(String key, Object... value) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
Set<byte[]> set = Sets.newHashSet();
for (Object o : value){
set.add(toBytes(o));
}
result = ShardedJedis.rpush(getBytesKey(key), (byte[][])set.toArray());
logger.debug("setSetObjectAdd {} = {}", key, value);
} catch (Exception e) {
logger.warn("setSetObjectAdd {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 获取Map缓存
* @param key 键
* @return 值
*/
public static Map<String, String> getMap(String key) {
Map<String, String> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
value = ShardedJedis.hgetAll(key);
logger.debug("getMap {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getMap {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 获取Map缓存
* @param key 键
* @return 值
*/
public static Map<String, Object> getObjectMap(String key) {
Map<String, Object> value = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
value = Maps.newHashMap();
Map<byte[], byte[]> map = ShardedJedis.hgetAll(getBytesKey(key));
for (Map.Entry<byte[], byte[]> e : map.entrySet()){
value.put(StringUtils.toString(e.getKey()), toObject(e.getValue()));
}
logger.debug("getObjectMap {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("getObjectMap {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return value;
} /**
* 设置Map缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static String setMap(String key, Map<String, String> value, int cacheSeconds) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)) {
ShardedJedis.del(key);
}
result = ShardedJedis.hmset(key, value);
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setMap {} = {}", key, value);
} catch (Exception e) {
logger.warn("setMap {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 设置Map缓存
* @param key 键
* @param value 值
* @param cacheSeconds 超时时间，0为不超时
* @return
*/
public static String setObjectMap(String key, Map<String, Object> value, int cacheSeconds) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))) {
ShardedJedis.del(key);
}
Map<byte[], byte[]> map = Maps.newHashMap();
for (Map.Entry<String, Object> e : value.entrySet()){
map.put(getBytesKey(e.getKey()), toBytes(e.getValue()));
}
result = ShardedJedis.hmset(getBytesKey(key), (Map<byte[], byte[]>)map);
if (cacheSeconds != 0) {
ShardedJedis.expire(key, cacheSeconds);
}
logger.debug("setObjectMap {} = {}", key, value);
} catch (Exception e) {
logger.warn("setObjectMap {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向Map缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static String mapPut(String key, Map<String, String> value) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.hmset(key, value);
logger.debug("mapPut {} = {}", key, value);
} catch (Exception e) {
logger.warn("mapPut {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 向Map缓存中添加值
* @param key 键
* @param value 值
* @return
*/
public static String mapObjectPut(String key, Map<String, Object> value) {
String result = null;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
Map<byte[], byte[]> map = Maps.newHashMap();
for (Map.Entry<String, Object> e : value.entrySet()){
map.put(getBytesKey(e.getKey()), toBytes(e.getValue()));
}
result = ShardedJedis.hmset(getBytesKey(key), (Map<byte[], byte[]>)map);
logger.debug("mapObjectPut {} = {}", key, value);
} catch (Exception e) {
logger.warn("mapObjectPut {} = {}", key, value, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 移除Map缓存中的值
* @param key 键
* @param value 值
* @return
*/
public static long mapRemove(String key, String mapKey) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.hdel(key, mapKey);
logger.debug("mapRemove {} {}", key, mapKey);
} catch (Exception e) {
logger.warn("mapRemove {} {}", key, mapKey, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 移除Map缓存中的值
* @param key 键
* @param value 值
* @return
*/
public static long mapObjectRemove(String key, String mapKey) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.hdel(getBytesKey(key), getBytesKey(mapKey));
logger.debug("mapObjectRemove {} {}", key, mapKey);
} catch (Exception e) {
logger.warn("mapObjectRemove {} {}", key, mapKey, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 判断Map缓存中的Key是否存在
* @param key 键
* @param value 值
* @return
*/
public static boolean mapExists(String key, String mapKey) {
boolean result = false;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.hexists(key, mapKey);
logger.debug("mapExists {} {}", key, mapKey);
} catch (Exception e) {
logger.warn("mapExists {} {}", key, mapKey, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 判断Map缓存中的Key是否存在
* @param key 键
* @param value 值
* @return
*/
public static boolean mapObjectExists(String key, String mapKey) {
boolean result = false;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.hexists(getBytesKey(key), getBytesKey(mapKey));
logger.debug("mapObjectExists {} {}", key, mapKey);
} catch (Exception e) {
logger.warn("mapObjectExists {} {}", key, mapKey, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 删除缓存
* @param key 键
* @return
*/
public static long del(String key) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(key)){
result = ShardedJedis.del(key);
logger.debug("del {}", key);
}else{
logger.debug("del {} not exists", key);
}
} catch (Exception e) {
logger.warn("del {}", key, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 删除缓存
* @param key 键
* @return
*/
public static long delObject(String key) {
long result = 0;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
if (ShardedJedis.exists(getBytesKey(key))){
result = ShardedJedis.del(getBytesKey(key));
logger.debug("delObject {}", key);
}else{
logger.debug("delObject {} not exists", key);
}
} catch (Exception e) {
logger.warn("delObject {}", key, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 缓存是否存在
* @param key 键
* @return
*/
public static boolean exists(String key) {
boolean result = false;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.exists(key);
logger.debug("exists {}", key);
} catch (Exception e) {
logger.warn("exists {}", key, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 缓存是否存在
* @param key 键
* @return
*/
public static boolean existsObject(String key) {
boolean result = false;
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = getResource();
result = ShardedJedis.exists(getBytesKey(key));
logger.debug("existsObject {}", key);
} catch (Exception e) {
logger.warn("existsObject {}", key, e);
} finally {
returnResource(ShardedJedis);
}
return result;
} /**
* 获取资源
* @return
* @throws JedisException
*/
public static ShardedJedis getResource() throws JedisException {
ShardedJedis ShardedJedis = null;
try {
ShardedJedis = shardedJedisPool.getResource();
// logger.debug("getResource.", ShardedJedis);
} catch (JedisException e) {
logger.warn("getResource.", e);
returnBrokenResource(ShardedJedis);
throw e;
}
return ShardedJedis;
} /**
* 归还资源
* @param ShardedJedis
* @param isBroken
*/
public static void returnBrokenResource(ShardedJedis ShardedJedis) {
if (ShardedJedis != null) {
shardedJedisPool.returnBrokenResource(ShardedJedis);
}
} /**
* 释放资源
* @param ShardedJedis
* @param isBroken
*/
public static void returnResource(ShardedJedis ShardedJedis) {
if (ShardedJedis != null) {
shardedJedisPool.returnResource(ShardedJedis);
}
} /**
* 获取byte[]类型Key
* @param key
* @return
*/
public static byte[] getBytesKey(Object object){
if(object instanceof String){
return StringUtils.getBytes((String)object);
}else{
return ObjectUtils.serialize(object);
}
} /**
* Object转换byte[]类型
* @param key
* @return
*/
public static byte[] toBytes(Object object){
return ObjectUtils.serialize(object);
} /**
* byte[]型转换Object
* @param key
* @return
*/
public static Object toObject(byte[] bytes){
return ObjectUtils.unserialize(bytes);
} }