关于Redis
单个redis在java中的代码：
resources的mmall.properties的配置
连接redis获取jedis的RedisPool
public class RedisPool {
private static JedisPool pool;//jedis连接池
private static Integer maxTotal = Integer.parseInt(PropertiesUtil.getProperty("redis.max.total","20")); //最大连接数
private static Integer maxIdle = Integer.parseInt(PropertiesUtil.getProperty("redis.max.idle","20"));//在jedispool中最大的idle状态(空闲的)的jedis实例的个数
private static Integer minIdle = Integer.parseInt(PropertiesUtil.getProperty("redis.min.idle","20"));//在jedispool中最小的idle状态(空闲的)的jedis实例的个数
private static Boolean testOnBorrow = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.borrow","true"));//在borrow一个jedis实例的时候，是否要进行验证操作，如果赋值true。则得到的jedis实例肯定是可以用的。
private static Boolean testOnReturn = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.return","true"));//在return一个jedis实例的时候，是否要进行验证操作，如果赋值true。则放回jedispool的jedis实例肯定是可以用的。
private static String redisIp = PropertiesUtil.getProperty("redis.ip");
private static Integer redisPort = Integer.parseInt(PropertiesUtil.getProperty("redis.port"));
private static void initPool(){
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(maxTotal);
config.setMaxIdle(maxIdle);
config.setMinIdle(minIdle);
config.setTestOnBorrow(testOnBorrow);
config.setTestOnReturn(testOnReturn);
config.setBlockWhenExhausted(true);//连接耗尽的时候，是否阻塞，false会抛出异常，true阻塞直到超时。默认为true。
pool = new JedisPool(config,redisIp,redisPort,1000*2);
}
static{
initPool();
}
public static Jedis getJedis(){
return pool.getResource();
}
public static void returnBrokenResource(Jedis jedis){
pool.returnBrokenResource(jedis);
}
public static void returnResource(Jedis jedis){
pool.returnResource(jedis);
}
public static void main(String[] args) {
Jedis jedis = pool.getResource();
jedis.set("test","www");
returnResource(jedis);
pool.destroy();//临时调用，销毁连接池中的所有连接
System.out.println("----end");
}
}
RedisPoolUtil工具类
@Slf4j
public class RedisPoolUtil {
/**
* 设置key的有效期，单位是秒
* @param key
* @param exTime
* @return
*/
public static Long expire(String key,int exTime){
Jedis jedis = null;
Long result = null;
try {
jedis = RedisPool.getJedis();
result = jedis.expire(key,exTime);
} catch (Exception e) {
log.error("expire key:{} error",key,e);
RedisPool.returnBrokenResource(jedis);
return result;
}
RedisPool.returnResource(jedis);
return result;
}
//exTime的单位是秒
public static String setEx(String key,String value,int exTime){
Jedis jedis = null;
String result = null;
try {
jedis = RedisPool.getJedis();
result = jedis.setex(key,exTime,value);
} catch (Exception e) {
log.error("setex key:{} value:{} error",key,value,e);
RedisPool.returnBrokenResource(jedis);
return result;
}
RedisPool.returnResource(jedis);
return result;
}
public static String set(String key,String value){
Jedis jedis = null;
String result = null;
try {
jedis = RedisPool.getJedis();
result = jedis.set(key,value);
} catch (Exception e) {
log.error("set key:{} value:{} error",key,value,e);
RedisPool.returnBrokenResource(jedis);
return result;
}
RedisPool.returnResource(jedis);
return result;
}
public static String get(String key){
Jedis jedis = null;
String result = null;
try {
jedis = RedisPool.getJedis();
result = jedis.get(key);
} catch (Exception e) {
log.error("get key:{} error",key,e);
RedisPool.returnBrokenResource(jedis);
return result;
}
RedisPool.returnResource(jedis);
return result;
}
public static Long del(String key){
Jedis jedis = null;
Long result = null;
try {
jedis = RedisPool.getJedis();
result = jedis.del(key);
} catch (Exception e) {
log.error("del key:{} error",key,e);
RedisPool.returnBrokenResource(jedis);
return result;
}
RedisPool.returnResource(jedis);
return result;
}
}
分布式的redis:
修改redis_2的端口（redis.windows.conf / redis.conf）
启动方式：Windows下
Linux下
resources的mmall.properties的配置
连接redis获取jedis的RedisShardedPool
public class RedisShardedPool {
private static ShardedJedisPool pool;//sharded jedis连接池
private static Integer maxTotal = Integer.parseInt(PropertiesUtil.getProperty("redis.max.total","20")); //最大连接数
private static Integer maxIdle = Integer.parseInt(PropertiesUtil.getProperty("redis.max.idle","20"));//在jedispool中最大的idle状态(空闲的)的jedis实例的个数
private static Integer minIdle = Integer.parseInt(PropertiesUtil.getProperty("redis.min.idle","20"));//在jedispool中最小的idle状态(空闲的)的jedis实例的个数
private static Boolean testOnBorrow = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.borrow","true"));//在borrow一个jedis实例的时候，是否要进行验证操作，如果赋值true。则得到的jedis实例肯定是可以用的。
private static Boolean testOnReturn = Boolean.parseBoolean(PropertiesUtil.getProperty("redis.test.return","true"));//在return一个jedis实例的时候，是否要进行验证操作，如果赋值true。则放回jedispool的jedis实例肯定是可以用的。
private static String redis1Ip = PropertiesUtil.getProperty("redis1.ip");
private static Integer redis1Port = Integer.parseInt(PropertiesUtil.getProperty("redis1.port"));
private static String redis2Ip = PropertiesUtil.getProperty("redis2.ip");
private static Integer redis2Port = Integer.parseInt(PropertiesUtil.getProperty("redis2.port"));
private static void initPool(){
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(maxTotal);
config.setMaxIdle(maxIdle);
config.setMinIdle(minIdle);
config.setTestOnBorrow(testOnBorrow);
config.setTestOnReturn(testOnReturn);
config.setBlockWhenExhausted(true);//连接耗尽的时候，是否阻塞，false会抛出异常，true阻塞直到超时。默认为true。
JedisShardInfo info1 = new JedisShardInfo(redis1Ip,redis1Port,1000*2);
JedisShardInfo info2 = new JedisShardInfo(redis2Ip,redis2Port,1000*2);
List jedisShardInfoList = new ArrayList(2);
jedisShardInfoList.add(info1);
jedisShardInfoList.add(info2);
pool = new ShardedJedisPool(config,jedisShardInfoList, Hashing.MURMUR_HASH, Sharded.DEFAULT_KEY_TAG_PATTERN);
}
static{
initPool();
}
public static ShardedJedis getJedis(){
return pool.getResource();
}
public static void returnBrokenResource(ShardedJedis jedis){
pool.returnBrokenResource(jedis);
}
public static void returnResource(ShardedJedis jedis){
pool.returnResource(jedis);
}
public static void main(String[] args) {
ShardedJedis jedis = pool.getResource();
for(int i =0;i<10;i++){
jedis.set("key"+i,"value"+i);
}
returnResource(jedis);
// pool.destroy();//临时调用，销毁连接池中的所有连接
System.out.println("program is end");
}
}
RedisShardedPoolUtil工具类
@Slf4j
public class RedisShardedPoolUtil {
/**
* 设置key的有效期，单位是秒
* @param key
* @param exTime
* @return
*/
public static Long expire(String key,int exTime){
ShardedJedis jedis = null;
Long result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.expire(key,exTime);
} catch (Exception e) {
log.error("expire key:{} error",key,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
//exTime的单位是秒
public static String setEx(String key,String value,int exTime){
ShardedJedis jedis = null;
String result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.setex(key,exTime,value);
} catch (Exception e) {
log.error("setex key:{} value:{} error",key,value,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
public static String set(String key,String value){
ShardedJedis jedis = null;
String result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.set(key,value);
} catch (Exception e) {
log.error("set key:{} value:{} error",key,value,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
public static String getSet(String key,String value){
ShardedJedis jedis = null;
String result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.getSet(key,value);
} catch (Exception e) {
log.error("getset key:{} value:{} error",key,value,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
public static String get(String key){
ShardedJedis jedis = null;
String result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.get(key);
} catch (Exception e) {
log.error("get key:{} error",key,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
public static Long del(String key){
ShardedJedis jedis = null;
Long result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.del(key);
} catch (Exception e) {
log.error("del key:{} error",key,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
public static Long setnx(String key,String value){
ShardedJedis jedis = null;
Long result = null;
try {
jedis = RedisShardedPool.getJedis();
result = jedis.setnx(key,value);
} catch (Exception e) {
log.error("setnx key:{} value:{} error",key,value,e);
RedisShardedPool.returnBrokenResource(jedis);
return result;
}
RedisShardedPool.returnResource(jedis);
return result;
}
}
