linux下小試redis demo

標籤：redis

先啟動  redis-server /etc/redis/redis.conf 

package com.test;import java.util.ArrayList;import java.util.Iterator;import java.util.List;import java.util.Set;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; /** *  * @author luozhonghua * */public class RedisClient {private Jedis jedis;// 非切片額用戶端串連private JedisPool jedisPool;// 非切片串連池private ShardedJedis shardedJedis;// 切片額用戶端串連private ShardedJedisPool shardedJedisPool;// 切片串連池public RedisClient() {initialPool();initialShardedPool();shardedJedis = shardedJedisPool.getResource();jedis = jedisPool.getResource();}/** * 初始化非切片池 */private void initialPool() {// 池基本配置JedisPoolConfig config = new JedisPoolConfig();config.setMaxActive(20);config.setMaxIdle(5);config.setMaxWait(1000l);config.setTestOnBorrow(false);         System.out.println("begin...");jedisPool = new JedisPool(config, "127.0.0.1", 6379); System.out.println("end...");}/** * 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連結List<JedisShardInfo> shards = new ArrayList<JedisShardInfo>();shards.add(new JedisShardInfo("127.0.0.1", 6379, "master"));// 構造池shardedJedisPool = new ShardedJedisPool(config, shards);}public void show() {KeyOperate();StringOperate();ListOperate();SetOperate();SortedSetOperate();HashOperate();jedisPool.returnResource(jedis);shardedJedisPool.returnResource(shardedJedis);}private void KeyOperate() {         System.out.println("======================key==========================");         // 清空資料         System.out.println("清空庫中所有資料："+jedis.flushDB());        // 判斷key否存在         System.out.println("判斷key999鍵是否存在："+shardedJedis.exists("key999"));         System.out.println("新增key001,value001索引值對："+shardedJedis.set("key001", "value001"));         System.out.println("判斷key001是否存在："+shardedJedis.exists("key001"));        // 輸出系統中所有的key        System.out.println("新增key002,value002索引值對："+shardedJedis.set("key002", "value002"));        System.out.println("系統中所有鍵如下：");        Set<String> keys = jedis.keys("*");         Iterator<String> it=keys.iterator() ;           while(it.hasNext()){               String key = it.next();               System.out.println(key);           }        // 刪除某個key,若key不存在，則忽略該命令。        System.out.println("系統中刪除key002: "+jedis.del("key002"));        System.out.println("判斷key002是否存在："+shardedJedis.exists("key002"));        // 設定 key001的到期時間        System.out.println("設定 key001的到期時間為5秒:"+jedis.expire("key001", 5));        try{             Thread.sleep(2000);         }         catch (InterruptedException e){         }         // 查看某個key的剩餘存留時間,單位【秒】.永久生存或者不存在的都返回-1        System.out.println("查看key001的剩餘存留時間："+jedis.ttl("key001"));        // 移除某個key的存留時間        System.out.println("移除key001的存留時間："+jedis.persist("key001"));        System.out.println("查看key001的剩餘存留時間："+jedis.ttl("key001"));        // 查看key所儲存的值的類型        System.out.println("查看key所儲存的值的類型："+jedis.type("key001"));        /*         * 一些其他方法：1、修改鍵名：jedis.rename("key6", "key0");         *             2、將當前db的key移動到給定的db當中：jedis.move("foo", 1)         */    }private void StringOperate()     {          System.out.println("======================String_1==========================");         // 清空資料         System.out.println("清空庫中所有資料："+jedis.flushDB());                System.out.println("=============增=============");        jedis.set("key001","value001");        jedis.set("key002","value002");        jedis.set("key003","value003");        System.out.println("已新增的3個索引值對如下：");        System.out.println(jedis.get("key001"));        System.out.println(jedis.get("key002"));        System.out.println(jedis.get("key003"));                System.out.println("=============刪=============");          System.out.println("刪除key003索引值對："+jedis.del("key003"));          System.out.println("擷取key003鍵對應的值："+jedis.get("key003"));                System.out.println("=============改=============");        //1、直接覆蓋原來的資料        System.out.println("直接覆蓋key001原來的資料："+jedis.set("key001","value001-update"));        System.out.println("擷取key001對應的新值："+jedis.get("key001"));        //2、直接覆蓋原來的資料          System.out.println("在key002原來值後面追加："+jedis.append("key002","+appendString"));        System.out.println("擷取key002對應的新值"+jedis.get("key002"));            System.out.println("=============增，刪，查（多個）=============");        /**          * mset,mget同時新增，修改，查詢多個索引值對          * 等價於：         * jedis.set("name","ssss");          * jedis.set("jarorwar","xxxx");          */          System.out.println("一次性新增key201,key202,key203,key204及其對應值："+jedis.mset("key201","value201",                        "key202","value202","key203","value203","key204","value204"));          System.out.println("一次性擷取key201,key202,key203,key204各自對應的值："+                        jedis.mget("key201","key202","key203","key204"));        System.out.println("一次性刪除key201,key202："+jedis.del(new String[]{"key201", "key202"}));        System.out.println("一次性擷取key201,key202,key203,key204各自對應的值："+                jedis.mget("key201","key202","key203","key204"));         System.out.println();                                    //jedis具備的功能shardedJedis中也可直接使用，下面測試一些前面沒用過的方法        System.out.println("======================String_2==========================");         // 清空資料         System.out.println("清空庫中所有資料："+jedis.flushDB());                      System.out.println("=============新增索引值對時防止覆蓋原先值=============");        System.out.println("原先key301不存在時，新增key301："+shardedJedis.setnx("key301", "value301"));        System.out.println("原先key302不存在時，新增key302："+shardedJedis.setnx("key302", "value302"));        System.out.println("當key302存在時，嘗試新增key302："+shardedJedis.setnx("key302", "value302_new"));        System.out.println("擷取key301對應的值："+shardedJedis.get("key301"));        System.out.println("擷取key302對應的值："+shardedJedis.get("key302"));                System.out.println("=============超過有效期間索引值對被刪除=============");        // 設定key的有效期間，並儲存資料         System.out.println("新增key303，並指定到期時間為2秒"+shardedJedis.setex("key303", 2, "key303-2second"));         System.out.println("擷取key303對應的值："+shardedJedis.get("key303"));         try{             Thread.sleep(3000);         }         catch (InterruptedException e){         }         System.out.println("3秒之後，擷取key303對應的值："+shardedJedis.get("key303"));                 System.out.println("=============擷取原值，更新為新值一步完成=============");        System.out.println("key302原值："+shardedJedis.getSet("key302", "value302-after-getset"));        System.out.println("key302新值："+shardedJedis.get("key302"));                System.out.println("=============擷取子串=============");        System.out.println("擷取key302對應值中的子串："+shardedJedis.getrange("key302", 5, 7));             } private void ListOperate() {}private void SetOperate() {}private void SortedSetOperate() {}private void HashOperate() {}public static void main(String[]args){  new RedisClient().show(); }}

linux下小試redis demo