redis java api
package bhz.redis01;import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.junit.BeforeClass;
import org.junit.Test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.Pipeline;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPipeline;
import redis.clients.jedis.ShardedJedisPool;
import redis.clients.jedis.Transaction;
public>
private static Jedis jedis;private static ShardedJedis shard;private static ShardedJedisPool pool;
@BeforeClass
public static void setUpBeforeClass() throws Exception {// 单个节点 jedis = new Jedis("139.196.123.218", 6379);
// 分片
// List<JedisShardInfo> shards = Arrays.asList(new JedisShardInfo(
// "139.196.123.218", 6379));
// shard = new ShardedJedis(shards);
//
// GenericObjectPoolConfig goConfig = new GenericObjectPoolConfig();
// goConfig.setMaxTotal(100);
// goConfig.setMaxIdle(20);
// goConfig.setMaxWaitMillis(-1);
// goConfig.setTestOnBorrow(true);
// pool = new ShardedJedisPool(goConfig, shards);
}
// @AfterClass
public static void tearDownAfterClass() throws Exception {
jedis.disconnect();
shard.disconnect();
pool.destroy();
}
@Test
public void testString() {
// -----添加数据----------
jedis.set("name", "bhz");// 向key-->name中放入了value-->xinxin
System.out.println(jedis.get("name"));// 执行结果：xinxin
jedis.append("name", " is my lover"); // 拼接
System.out.println(jedis.get("name"));
jedis.del("name"); // 删除某个键
System.out.println(jedis.get("name"));
// 设置多个键值对
jedis.mset("name", "bhz", "age", "27", "qq", "174754613");
jedis.incr("age"); // 进行加1操作
System.out.println(jedis.get("name") + "-" + jedis.get("age") + "-"
+ jedis.get("qq"));
}
/**
* redis操作Map
*/
@Test
public void testMap() {
// -----添加数据----------
Map<String, String> map = new HashMap<String, String>();
map.put("name", "xinxin");
map.put("age", "22");
map.put("qq", "123456");
jedis.hmset("user", map);
// 取出user中的name，执行结果:-->注意结果是一个泛型的List
// 第一个参数是存入redis中map对象的key，后面跟的是放入map中的对象的key，后面的key可以跟多个，是可变参数
List<String> rsmap = jedis.hmget("user", "name", "age", "qq");
System.out.println(rsmap);
// 删除map中的某个键值
jedis.hdel("user", "age");
System.out.println(jedis.hmget("user", "age")); // 因为删除了，所以返回的是null
System.out.println(jedis.hlen("user")); // 返回key为user的键中存放的值的个数2
System.out.println(jedis.exists("user"));// 是否存在key为user的记录 返回true
System.out.println(jedis.hkeys("user"));// 返回map对象中的所有key
System.out.println(jedis.hvals("user"));// 返回map对象中的所有value
Iterator<String> iter = jedis.hkeys("user").iterator();
while (iter.hasNext()) {
String key = iter.next();
System.out.println(key + ":" + jedis.hmget("user", key));
}
}
/**
* jedis操作List
*/
@Test
public void testList() {
// 开始前，先移除所有的内容
jedis.del("java framework");
System.out.println(jedis.lrange("java framework", 0, -1));
// 先向key java framework中存放三条数据
jedis.lpush("java framework", "spring");
jedis.lpush("java framework", "struts");
jedis.lpush("java framework", "hibernate");
// 再取出所有数据jedis.lrange是按范围取出，
// 第一个是key，第二个是起始位置，第三个是结束位置，jedis.llen获取长度 -1表示取得所有
System.out.println(jedis.lrange("java framework", 0, -1));
jedis.del("java framework");
jedis.rpush("java framework", "spring");
jedis.rpush("java framework", "struts");
jedis.rpush("java framework", "hibernate");
System.out.println(jedis.lrange("java framework", 0, -1));
}
/**
* jedis操作Set
*/
@Test
public void testSet() {
// 添加
jedis.sadd("user", "liuling");
jedis.sadd("user", "xinxin");
jedis.sadd("user", "ling");
jedis.sadd("user", "zhangxinxin");
jedis.sadd("user", "who");
// 移除noname
jedis.srem("user", "who");
System.out.println(jedis.smembers("user"));// 获取所有加入的value
System.out.println(jedis.sismember("user", "who"));// 判断 who
// 是否是user集合的元素
System.out.println(jedis.srandmember("user"));
System.out.println(jedis.scard("user"));// 返回集合的元素个数
}
@Test
public void testRLpush() throws InterruptedException {
// jedis 排序
// 注意，此处的rpush和lpush是List的操作。是一个双向链表（但从表现来看的）
jedis.del("a");// 先清除数据，再加入数据进行测试
jedis.rpush("a", "1");
jedis.lpush("a", "6");
jedis.lpush("a", "3");
jedis.lpush("a", "9");
System.out.println(jedis.lrange("a", 0, -1));//
System.out.println(jedis.sort("a")); // //输入排序后结果
System.out.println(jedis.lrange("a", 0, -1));
}
// @Test
public void testTrans() {
long start = System.currentTimeMillis();
Transaction tx = jedis.multi();
for (int i = 0; i < 1000; i++) {
tx.set("t" + i, "t" + i);
}
// System.out.println(tx.get("t1000").get());
List<Object> results = tx.exec();
long end = System.currentTimeMillis();
System.out.println("Transaction SET: " + ((end - start) / 1000.0)
+ " seconds");
}
// @Test
public void testPipelined() {
Pipeline pipeline = jedis.pipelined();
long start = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
pipeline.set("p" + i, "p" + i);
}
// System.out.println(pipeline.get("p1000").get());
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined SET: " + ((end - start) / 1000.0)
+ " seconds");
}
// @Test
public void testPipelineTrans() {
long start = System.currentTimeMillis();
Pipeline pipeline = jedis.pipelined();
pipeline.multi();
for (int i = 0; i < 100000; i++) {
pipeline.set("" + i, "" + i);
}
pipeline.exec();
List<Object> results = pipeline.syncAndReturnAll();
long end = System.currentTimeMillis();
System.out.println("Pipelined transaction SET: "
+ ((end - start) / 1000.0) + " seconds");
}
// @Test
public void testShard() {
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = shard.set("shard" + i, "n" + i);
}
long end = System.currentTimeMillis();
System.out.println("shard SET: " + ((end - start) / 1000.0)
+ " seconds");
}
// @Test
public void testShardpipelined() {
ShardedJedisPipeline pipeline = shard.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("shardPipelined SET: " + ((end - start) / 1000.0)
+ " seconds");
}
// @Test
public void testShardPool() {
ShardedJedis sj = pool.getResource();
long start = System.currentTimeMillis();
for (int i = 0; i < 100000; i++) {
String result = sj.set("spn" + i, "n" + i);
}
long end = System.currentTimeMillis();
pool.returnResource(sj);
System.out.println("shardPool SET: " + ((end - start) / 1000.0)
+ " seconds");
}
}
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