3.通过Jedis访问Redis——八种调用方式
package com.gqshao.redis.connection;import org.junit.Test;
import redis.clients.jedis.*;
import java.util.Arrays;
import java.util.List;
/**
* Redis的Java客户端Jedis的八种调用方式
*/
public class ConnectionTest {
/**
* 普通连接方式
* Simple SET: 95.437 seconds
*/
@Test
public void testNormal() {
Jedis jedis = new Jedis("192.168.3.98", 6379);
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = jedis.set("n" + i, "n" + i);
}
long end = System.currentTimeMillis();
System.out.println("Simple SET: " + ((end - start) / 1000.0) + " seconds");
// 销毁
jedis.close();
}
/**
* 普通连接池方式
* POOL SET: 99.789 seconds
*
*/
@Test
public void testSimplePool() {
JedisPool pool = new JedisPool(new JedisPoolConfig(), "192.168.3.98", 6379, 0);
Jedis jedis = pool.getResource();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = jedis.set("np" + i, "vp" + i);
}
long end = System.currentTimeMillis();
pool.returnResource(jedis);
System.out.println("POOL SET: " + ((end - start) / 1000.0) + " seconds");
// 销毁
jedis.close();
}
/**
* 事务方式(Transactions)
* 通过multi(开启一个事务)、exec(执行)、discard（放弃事务）
* Transaction SET: 0.926 seconds
*/
@Test
public void testMulti() {
Jedis jedis = new Jedis("192.168.3.98", 6379);
long start = System.currentTimeMillis();
Transaction tx = jedis.multi();
for (int i = 0; i < 100000; i++) {
tx.set("t" + i, "v" + i);
}
List<Object> results = tx.exec();
long end = System.currentTimeMillis();
System.out.println("Transaction SET: " + ((end - start) / 1000.0) + " seconds");
jedis.close();
}
/**
* 管道(Pipelining)
* 异步方式，一次发送多个指令
* Pipelined SET: 0.742 seconds
*/
@Test
public void testPipelining() {
Jedis jedis = new Jedis("192.168.3.98", 6379);
Pipeline pipeline = jedis.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
pipeline.set("p" + i, "p" + i);
}
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined SET: " + ((end - start) / 1000.0) + " seconds");
jedis.close();
}
/**
* 管道中调用事务
* 测试中会发生 java.lang.StackOverflowError
*/
@Test
public void testPipeliningWithMulti() {
Jedis jedis = new Jedis("192.168.3.98", 6379);
long start = System.currentTimeMillis();
Pipeline pipeline = jedis.pipelined();
pipeline.multi();
// >10000次会内存溢出
/*for (int i = 0; i < 100000; i++) {
pipeline.set("" + i, "" + i);
}*/
for (int i = 0; i < 1000; i++) {
pipeline.set("" + i, "" + i);
}
pipeline.exec();
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined transaction: " + ((end - start) / 1000.0) + " seconds");
jedis.close();
}
/**
* 分布式直接连接同步调用
* 通过List<JedisShardInfo>中Info的顺序和key，计算hash,确定key为固定的Redis上
* Simple@Sharing SET: 95.106 seconds
*/
@Test
public void testshardNormal() {
List<JedisShardInfo> shards = Arrays.asList(
new JedisShardInfo("192.168.3.98", 6379),
new JedisShardInfo("192.168.3.98", 6380));
ShardedJedis sharding = new ShardedJedis(shards);
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = sharding.set("sn" + i, "n" + i);
}
long end = System.currentTimeMillis();
System.out.println("Simple@Sharing SET: " + ((end - start) / 1000.0) + " seconds");
sharding.close();
}
/**
* 分布式直接连接管道异步调用，key的分配结果同 分布式直接连接同步调用 相同
* Pipelined@Sharing SET: 0.856 seconds
*/
@Test
public void testshardPipelining() {
List<JedisShardInfo> shards = Arrays.asList(
new JedisShardInfo("192.168.3.98", 6379),
new JedisShardInfo("192.168.3.98", 6380));
ShardedJedis sharding = new ShardedJedis(shards);
ShardedJedisPipeline pipeline = sharding.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
pipeline.set("sp" + i, "p" + i);
}
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined@Sharing SET: " + ((end - start) / 1000.0) + " seconds");
sharding.close();
}
/**
* 分布式连接池同步调用
*/
@Test
public void testShardSimplePool() {
List<JedisShardInfo> shards = Arrays.asList(
new JedisShardInfo("192.168.3.98", 6379),
new JedisShardInfo("192.168.3.98", 6380));
ShardedJedisPool pool = new ShardedJedisPool(new JedisPoolConfig(), shards);
ShardedJedis one = pool.getResource();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = one.set("spn" + i, "n" + i);
}
long end = System.currentTimeMillis();
pool.returnResource(one);
System.out.println("Simple@Pool SET: " + ((end - start) / 1000.0) + " seconds");
pool.destroy();
}
/**
* 分布式连接池异步调用相同，返回管道与分布式直接连接管道异步调用
* Simple@Pool SET: 94.094 seconds
*/
@Test
public void testShardPoolWithPipelined() {
List<JedisShardInfo> shards = Arrays.asList(
new JedisShardInfo("localhost", 6379),
new JedisShardInfo("localhost", 6380));
ShardedJedisPool pool = new ShardedJedisPool(new JedisPoolConfig(), shards);
ShardedJedis one = pool.getResource();
ShardedJedisPipeline pipeline = one.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
pipeline.set("sppn" + i, "n" + i);
}
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
pool.returnResource(one);
System.out.println("Pipelined@Pool SET: " + ((end - start) / 1000.0) + " seconds");
pool.destroy();
}
}
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