Redis 實現分佈式鎖
單機模式的Redis分佈式鎖
- 優缺點
- 實現比較輕，大多數時候能滿足需求；因爲是單機單實例部署，如果redis服務宕機，那麼所有需要獲取分佈式鎖的地方均無法獲取鎖，將全部阻塞，需要做好降級處理。
- 當鎖過期後，執行任務的進程還沒有執行完，但是鎖因爲自動過期已經解鎖，可能被其它進程重新加鎖，這就造成多個進程同時獲取到了鎖，這需要額外的方案來解決這種問題。
- 實現代碼
import redis.clients.jedis.Jedis; import java.util.Collections; public class JedisDistributedLock { private static final String LOCK_SUCCESS = "OK"; private static final Long RELEASE_SUCCESS = 1L; private static final String SET_IF_NOT_EXIST = "NX"; private static final String SET_WITH_EXPIRE_TIME = "PX"; // 獲取鎖，不設置超時時間 public static boolean getLock(Jedis jedis, String lockKey, String requestId){ String result = jedis.set(lockKey, requestId, SET_IF_NOT_EXIST); if(LOCK_SUCCESS.equals(result)){ return true; } return false; } // 獲取鎖, 設置超時時間，單位爲毫秒 public static boolean getLock(Jedis jedis, String lockKey, String requestId, Long expireTime){ /** * jedis.set(key, value, nxxx, expx, time) * * Set the string value as value of the key. The string can't be longer than 1073741824 bytes (1 * GB). * @param key * @param value * @param NXXX NX|XX, NX -- Only set the key if it does not already exist. XX -- Only set the key if it already exist. * @param EXPX EX|PX, expire time units: EX = seconds; PX = milliseconds * * @return Status code reply set成功，返回 OK */ String result = jedis.set(lockKey, requestId, SET_IF_NOT_EXIST, SET_WITH_EXPIRE_TIME, expireTime); if(LOCK_SUCCESS.equals(result)){ return true; } return false; } //釋放鎖 public static boolean releaseLock(Jedis jedis, String lockKey, String requestId){ // Lua腳本 String script = "if redis.call('get',KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end"; Object result = jedis.eval(script, Collections.singletonList(lockKey), Collections.singletonList(requestId)); if(RELEASE_SUCCESS.equals(result)){ return true; } return false; } }
集羣模式的Redis分佈式鎖 Redlock
-
優缺點
- Redlock是Redis的作者antirez給出的集羣模式的Redis分佈式鎖，它基於N個完全獨立的Redis節點
- 部分節點宕機，依然可以保證鎖的可用性
- 當某個節點宕機後，又立即重啓了，可能會出現兩個客戶端同時持有同一把鎖，如果節點設置了持久化，出現這種情況的機率會降低
- 和單機模式Redis鎖相比，實現難度要大一些
-
實現代碼
- 搭建redis集羣
# 安裝指定版本的redis cd /opt wget http://download.redis.io/releases/redis-3.2.8.tar.gz tar xzf redis-3.2.8.tar.gz && rm redis-3.2.8.tar.gz cd redis-3.2.8 make# 構建redis集羣 cd mkdir cluster-test cd cluster-test mkdir conf logs bin # 拷貝客戶端服務器文件 rsync -avp /opt/redis-3.2.8/src/redis-server bin/ rsync -avp /opt/redis-3.2.8/src/redis-cli bin/ # 配置文件 for i in 7000 7001 7002 7003 7004 7005; do cat << EOF > conf/${i}.conf port ${i} cluster-enabled yes cluster-config-file nodes-${i}.conf cluster-node-timeout 5000 appendonly yes logfile "logs/${i}.log" appendfilename "appendonly-${i}.aof" EOF done # 啓動 cd ${HOME}/cluster-test for i in 7000 7001 7002 7003 7004 7005; do ./bin/redis-server ./conf/${i}.conf & done # 創建集羣 sudo apt-get install -y ruby rubygems gem install redis cd /opt/redis-3.2.8/src/ ./redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 # 測試 cd ${HOME}/cluster-test/ ./bin/redis-cli -c -p 7000 cluser nodes # 停止 #cd ${HOME}/cluster-test #for i in 7000 7001 7002 7003 7004 7005; do #./bin/redis-cli -p ${i} shutdown && echo "redis ${i} 已停止" #done腳本執行後，出現如下日誌，說明集羣搭建成功
>>> Creating cluster >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 Adding replica 127.0.0.1:7003 to 127.0.0.1:7000 Adding replica 127.0.0.1:7004 to 127.0.0.1:7001 Adding replica 127.0.0.1:7005 to 127.0.0.1:7002 M: d0e3588845a839052d9e611853740edd3b348966 127.0.0.1:7000 slots:0-5460 (5461 slots) master M: 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 127.0.0.1:7001 slots:5461-10922 (5462 slots) master M: 5724fb03c4527389be0d556c5dc5419a12d367c5 127.0.0.1:7002 slots:10923-16383 (5461 slots) master S: 1206f7a76b8050b10e2e602fad422faee95efdb5 127.0.0.1:7003 replicates d0e3588845a839052d9e611853740edd3b348966 S: 8f421f529c86cefbf033e1e3a1687a9767802bd2 127.0.0.1:7004 replicates 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 S: d94710251235efde7da4073cc4ff104d9298bd0f 127.0.0.1:7005 replicates 5724fb03c4527389be0d556c5dc5419a12d367c5 Can I set the above configuration? (type 'yes' to accept): yes >>> Nodes configuration updated >>> Assign a different config epoch to each node >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join... >>> Performing Cluster Check (using node 127.0.0.1:7000) M: d0e3588845a839052d9e611853740edd3b348966 127.0.0.1:7000 slots:0-5460 (5461 slots) master 1 additional replica(s) S: 8f421f529c86cefbf033e1e3a1687a9767802bd2 127.0.0.1:7004 slots: (0 slots) slave replicates 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 S: 1206f7a76b8050b10e2e602fad422faee95efdb5 127.0.0.1:7003 slots: (0 slots) slave replicates d0e3588845a839052d9e611853740edd3b348966 M: 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 127.0.0.1:7001 slots:5461-10922 (5462 slots) master 1 additional replica(s) S: d94710251235efde7da4073cc4ff104d9298bd0f 127.0.0.1:7005 slots: (0 slots) slave replicates 5724fb03c4527389be0d556c5dc5419a12d367c5 M: 5724fb03c4527389be0d556c5dc5419a12d367c5 127.0.0.1:7002 slots:10923-16383 (5461 slots) master 1 additional replica(s) [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.- redis-cluster簡單集羣示例圖
- 使用Redission構建redLock
Redis集羣使用分片的方式保存鍵值對，redis-cluster採用slot(槽)的概念，一共16384個槽位，分佈在集羣中的所有master實例上。保存數據時，直接對key值做CRC16校驗後得到的校驗值對16384取模，將鍵值對存儲到對應的槽位所在的實例上。
import org.redisson.Redisson; import org.redisson.api.RAtomicLong; import org.redisson.api.RedissonClient; import org.redisson.config.Config; /** * Created by Haiyoung on 2018/8/11. */ public class RedissonManager { private static final String RAtomicName = "genId_"; private static Config config = new Config(); private static RedissonClient redisson = null; public static void init(){ try{ config.useClusterServers() .setScanInterval(200000)//設置集羣狀態掃描間隔 .setMasterConnectionPoolSize(10000)//設置對於master節點的連接池中連接數最大爲10000 .setSlaveConnectionPoolSize(10000)//設置對於slave節點的連接池中連接數最大爲500 .setIdleConnectionTimeout(10000)//如果當前連接池裏的連接數量超過了最小空閒連接數，而同時有連接空閒時間超過了該數值，那麼這些連接將會自動被關閉，並從連接池裏去掉。時間單位是毫秒。 .setConnectTimeout(30000)//同任何節點建立連接時的等待超時。時間單位是毫秒。 .setTimeout(3000)//等待節點回覆命令的時間。該時間從命令發送成功時開始計時。 .setRetryInterval(3000)//當與某個節點的連接斷開時，等待與其重新建立連接的時間間隔。時間單位是毫秒。 .addNodeAddress("redis://127.0.0.1:7000","redis://127.0.0.1:7001","redis://127.0.0.1:7002","redis://127.0.0.1:7003","redis://127.0.0.1:7004","redis://127.0.0.1:7005"); redisson = Redisson.create(config); RAtomicLong atomicLong = redisson.getAtomicLong(RAtomicName); atomicLong.set(1);//自增設置爲從1開始 }catch (Exception e){ e.printStackTrace(); } } public static RedissonClient getRedisson(){ if(redisson == null){ RedissonManager.init(); //初始化 } return redisson; } /** 獲取redis中的原子ID */ public static Long nextID(){ RAtomicLong atomicLong = getRedisson().getAtomicLong(RAtomicName); atomicLong.incrementAndGet(); return atomicLong.get(); } }import org.redisson.api.RLock; import org.redisson.api.RedissonClient; import java.util.concurrent.TimeUnit; /** * Created by Haiyoung on 2018/8/11. */ public class DistributedRedisLock { private static RedissonClient redisson = RedissonManager.getRedisson(); private static final String LOCK_TITLE = "redisLock_"; public static void acquire(String lockName){ String key = LOCK_TITLE + lockName; RLock mylock = redisson.getLock(key); mylock.lock(2, TimeUnit.MINUTES); //lock提供帶timeout參數，timeout結束強制解鎖，防止死鎖 System.err.println("======lock======"+Thread.currentThread().getName()); } public static void release(String lockName){ String key = LOCK_TITLE + lockName; RLock mylock = redisson.getLock(key); mylock.unlock(); System.err.println("======unlock======"+Thread.currentThread().getName()); } public static void main(String[] args){ for (int i = 0; i < 3; i++) { Thread t = new Thread(new Runnable() { @Override public void run() { try { String key = "test123"; DistributedRedisLock.acquire(key); Thread.sleep(1000); //獲得鎖之後可以進行相應的處理 System.err.println("======獲得鎖後進行相應的操作======"); DistributedRedisLock.release(key); System.err.println("============================="); } catch (Exception e) { e.printStackTrace(); } } }); t.start(); } } }執行main函數，進行測試：
//建立的集羣關係如下所示： //可以看到集羣關係以及槽位分配信息 12:41:14.749 [redisson-netty-1-7] DEBUG org.redisson.cluster.ClusterConnectionManager - cluster nodes state from 127.0.0.1/127.0.0.1:7001: d0e3588845a839052d9e611853740edd3b348966 127.0.0.1:7000 master - 0 1539319273461 1 connected 0-5460 d94710251235efde7da4073cc4ff104d9298bd0f 127.0.0.1:7005 slave 5724fb03c4527389be0d556c5dc5419a12d367c5 0 1539319273963 6 connected 5724fb03c4527389be0d556c5dc5419a12d367c5 127.0.0.1:7002 master - 0 1539319274465 3 connected 10923-16383 8f421f529c86cefbf033e1e3a1687a9767802bd2 127.0.0.1:7004 slave 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 0 1539319272458 5 connected 1206f7a76b8050b10e2e602fad422faee95efdb5 127.0.0.1:7003 slave d0e3588845a839052d9e611853740edd3b348966 0 1539319272961 4 connected 4f5518e78c1ea1c25bab0d0147f12c0281fd5f96 127.0.0.1:7001 myself,master - 0 0 2 connected 5461-10922//加鎖解鎖過程 ======lock======Thread-2 10:27:50.086 [redisson-netty-1-6] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=1, freeSubscribeConnectionsCounter=50, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@788625756 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x9109c84f, L:/127.0.0.1:49276 - R:127.0.0.1/127.0.0.1:7002]] 10:27:50.096 [Thread-1] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:50.102 [redisson-netty-1-6] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@615544583 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x088086f4, L:/127.0.0.1:49194 - R:127.0.0.1/127.0.0.1:7002]] 10:27:50.120 [Thread-1] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:50.120 [Thread-3] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:50.121 [Thread-1] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@1475932758 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x37cce38a, L:/127.0.0.1:49230 - R:127.0.0.1/127.0.0.1:7002]] 10:27:50.121 [Thread-3] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=30, freeConnectionsCounter=9998, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@1231431314 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xea1b90d2, L:/127.0.0.1:49286 - R:127.0.0.1/127.0.0.1:7002]] 10:27:50.126 [redisson-netty-1-1] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@1475932758 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x37cce38a, L:/127.0.0.1:49230 - R:127.0.0.1/127.0.0.1:7002]] 10:27:50.127 [redisson-netty-1-1] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@1231431314 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xea1b90d2, L:/127.0.0.1:49286 - R:127.0.0.1/127.0.0.1:7002]] ======獲得鎖後進行相應的操作====== 10:27:51.081 [Thread-2] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:51.082 [Thread-2] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('publish', KEYS[2], ARGV[1]); return 1; end;if (redis.call('hexists', KEYS[1], ARGV[3]) == 0) then return nil;end; local counter = redis.call('hincrby', KEYS[1], ARGV[3], -1); if (counter > 0) then redis.call('pexpire', KEYS[1], ARGV[2]); return 0; else redis.call('del', KEYS[1]); redis.call('publish', KEYS[2], ARGV[1]); return 1; end; return nil;, 2, redisLock_test123, redisson_lock__channel:{redisLock_test123}, 0, 30000, 20e96666-d967-4d3c-ac94-abeb14493160:21] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@697105324 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x3b2eb2ff, L:/127.0.0.1:49244 - R:127.0.0.1/127.0.0.1:7002]] 10:27:51.086 [redisson-netty-1-5] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('publish', KEYS[2], ARGV[1]); return 1; end;if (redis.call('hexists', KEYS[1], ARGV[3]) == 0) then return nil;end; local counter = redis.call('hincrby', KEYS[1], ARGV[3], -1); if (counter > 0) then redis.call('pexpire', KEYS[1], ARGV[2]); return 0; else redis.call('del', KEYS[1]); redis.call('publish', KEYS[2], ARGV[1]); return 1; end; return nil;, 2, redisLock_test123, redisson_lock__channel:{redisLock_test123}, 0, 30000, 20e96666-d967-4d3c-ac94-abeb14493160:21] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@697105324 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x3b2eb2ff, L:/127.0.0.1:49244 - R:127.0.0.1/127.0.0.1:7002]] ======unlock======Thread-2 ============================= 10:27:51.090 [Thread-1] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:51.090 [Thread-3] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:51.091 [Thread-1] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=30, freeConnectionsCounter=9998, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@489743733 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xc2cb57a1, L:/127.0.0.1:49204 - R:127.0.0.1/127.0.0.1:7002]] 10:27:51.091 [Thread-3] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=30, freeConnectionsCounter=9998, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@562253068 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x69c6d83a, L:/127.0.0.1:49260 - R:127.0.0.1/127.0.0.1:7002]] 10:27:51.095 [redisson-netty-1-1] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@562253068 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x69c6d83a, L:/127.0.0.1:49260 - R:127.0.0.1/127.0.0.1:7002]] 10:27:51.096 [redisson-netty-1-6] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@489743733 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xc2cb57a1, L:/127.0.0.1:49204 - R:127.0.0.1/127.0.0.1:7002]] ======lock======Thread-1 ======獲得鎖後進行相應的操作====== 10:27:52.102 [Thread-1] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:52.103 [Thread-1] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('publish', KEYS[2], ARGV[1]); return 1; end;if (redis.call('hexists', KEYS[1], ARGV[3]) == 0) then return nil;end; local counter = redis.call('hincrby', KEYS[1], ARGV[3], -1); if (counter > 0) then redis.call('pexpire', KEYS[1], ARGV[2]); return 0; else redis.call('del', KEYS[1]); redis.call('publish', KEYS[2], ARGV[1]); return 1; end; return nil;, 2, redisLock_test123, redisson_lock__channel:{redisLock_test123}, 0, 30000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@2085319794 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x7b0b77c0, L:/127.0.0.1:49250 - R:127.0.0.1/127.0.0.1:7002]] 10:27:52.107 [redisson-netty-1-5] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('publish', KEYS[2], ARGV[1]); return 1; end;if (redis.call('hexists', KEYS[1], ARGV[3]) == 0) then return nil;end; local counter = redis.call('hincrby', KEYS[1], ARGV[3], -1); if (counter > 0) then redis.call('pexpire', KEYS[1], ARGV[2]); return 0; else redis.call('del', KEYS[1]); redis.call('publish', KEYS[2], ARGV[1]); return 1; end; return nil;, 2, redisLock_test123, redisson_lock__channel:{redisLock_test123}, 0, 30000, 20e96666-d967-4d3c-ac94-abeb14493160:20] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@2085319794 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x7b0b77c0, L:/127.0.0.1:49250 - R:127.0.0.1/127.0.0.1:7002]] ======unlock======Thread-1 ============================= 10:27:52.111 [Thread-3] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 10:27:52.112 [Thread-3] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@1360268292 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xe28d264d, L:/127.0.0.1:49406 - R:127.0.0.1/127.0.0.1:7002]] 10:27:52.115 [redisson-netty-1-7] DEBUG org.redisson.command.CommandAsyncService - connection released for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('hset', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; if (redis.call('hexists', KEYS[1], ARGV[2]) == 1) then redis.call('hincrby', KEYS[1], ARGV[2], 1); redis.call('pexpire', KEYS[1], ARGV[1]); return nil; end; return redis.call('pttl', KEYS[1]);, 1, redisLock_test123, 120000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=32, freeConnectionsCounter=10000, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using connection RedisConnection@1360268292 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0xe28d264d, L:/127.0.0.1:49406 - R:127.0.0.1/127.0.0.1:7002]] ======lock======Thread-3 10:27:53.120 [Thread-3] DEBUG org.redisson.cluster.ClusterConnectionManager - slot 12809 for redisLock_test123 ======獲得鎖後進行相應的操作====== 10:27:53.121 [Thread-3] DEBUG org.redisson.command.CommandAsyncService - acquired connection for command (EVAL) and params [if (redis.call('exists', KEYS[1]) == 0) then redis.call('publish', KEYS[2], ARGV[1]); return 1; end;if (redis.call('hexists', KEYS[1], ARGV[3]) == 0) then return nil;end; local counter = redis.call('hincrby', KEYS[1], ARGV[3], -1); if (counter > 0) then redis.call('pexpire', KEYS[1], ARGV[2]); return 0; else redis.call('del', KEYS[1]); redis.call('publish', KEYS[2], ARGV[1]); return 1; end; return nil;, 2, redisLock_test123, redisson_lock__channel:{redisLock_test123}, 0, 30000, 20e96666-d967-4d3c-ac94-abeb14493160:22] from slot NodeSource [slot=null, addr=null, redisClient=null, redirect=null, entry=MasterSlaveEntry [masterEntry=[freeSubscribeConnectionsAmount=0, freeSubscribeConnectionsCounter=49, freeConnectionsAmount=31, freeConnectionsCounter=9999, freezed=false, freezeReason=null, client=[addr=redis://127.0.0.1:7002], nodeType=MASTER, firstFail=0]]] using node 127.0.0.1/127.0.0.1:7002... RedisConnection@1735465853 [redisClient=[addr=redis://127.0.0.1:7002], channel=[id: 0x669d66fa, L:/127.0.0.1:49254 - R:127.0.0.1/127.0.0.1:7002]] ======unlock======Thread-3 =============================