@Slf4j
@Configuration
public class RedisConfig11 extends CachingConfigurerSupport {
@Value("${redis. maxIdle}")
private int maxIdle;
@Value("${redis. minIdle}")
private int minIdle;
@Value("${redis. maxTotal}")
private int maxTotal;
@Value("${redis. timeout}")
private int timeout;
@Value("${redis.cluster.nodes}")
private String nodes;
@Value("${redis.password}")
private String password;
@Autowired
private CustomRedisKeySerializer customRedisKeySerializer;
@Autowired
private CustomRedisSerializer customRedisSerializer;
@Bean(destroyMethod = "destroy")
public LettuceConnectionFactory lettuceConnectionFactory() {
// Connection pool configuration
GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
// The maximum number of idle threads in the thread pool
genericObjectPoolConfig.setMaxIdle(maxIdle);
// The minimum number of idle threads in the thread pool
genericObjectPoolConfig.setMinIdle(minIdle);
// The maximum number of threads in the thread pool
genericObjectPoolConfig.setMaxTotal(maxTotal);
// When the connection pool is exhausted, the client should wait for the maximum time for a new connection, in milliseconds
genericObjectPoolConfig.setMaxWaitMillis(timeout);
genericObjectPoolConfig.setTestOnBorrow(false);
ClusterClientOptions clusterClientOptions = ClusterClientOptions.builder()
// close ping
.pingBeforeActivateConnection(false)
.build();
LettuceClientConfiguration lettuceClientConfiguration = LettucePoolingClientConfiguration.builder()
.clientOptions(clusterClientOptions)
// overtime time
.shutdownTimeout(Duration.ofMillis(timeout))
.poolConfig(genericObjectPoolConfig)
.build();
// redis cluster node ip:port English comma separated
if (StringUtils. isEmpty(nodes)) {
log.error("redis cluster node is empty");
throw new RuntimeException();
}
String[] hostAndPorts = nodes. split(",");
Set<RedisNode> nodes = new HashSet<>();
for (String hostAndPort : hostAndPorts) {
String[] ipAndPort = hostAndPort. split(":");
nodes.add(new RedisNode(ipAndPort[0], Integer.parseInt(ipAndPort[1])));
}
RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
redisClusterConfiguration.setClusterNodes(nodes);
redisClusterConfiguration.setMaxRedirects(nodes.size());
redisClusterConfiguration.setPassword(RedisPassword.of(password));
// Create a connection according to the configuration and client configuration
LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory(redisClusterConfiguration, lettuceClientConfiguration);
lettuceConnectionFactory. afterPropertiesSet();
return lettuceConnectionFactory;
}
@Bean
public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
// set serialization
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = jackson2JsonRedisSerializer();
// configure redisTemplate
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(lettuceConnectionFactory);
// key serialization
redisTemplate.setKeySerializer(customRedisSerializer);
// value serialization
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
// Hash key serialization
redisTemplate.setHashKeySerializer(customRedisSerializer);
// Hash value serialization
redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
@Bean
public CacheManager cacheManager(LettuceConnectionFactory lettuceConnectionFactory) {
// Configure serialization (the cache is valid for 6 hours by default)
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(6));
RedisCacheConfiguration redisCacheConfiguration = config
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()))
.computePrefixWith(customRedisKeySerializer);
return RedisCacheManager
// Create a RedisCacheWriter object by means of lock writing
.builder(RedisCacheWriter.lockingRedisCacheWriter(lettuceConnectionFactory))
.cacheDefaults(redisCacheConfiguration)
.transactionAware()
.build();
}
private Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer() {
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
jackson2JsonRedisSerializer.setObjectMapper(new ObjectMapper()
.setVisibility(PropertyAccessor.ALL, Visibility.ANY).enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL));
return jackson2JsonRedisSerializer;
}
}
@Slf4j
@Component
public class CustomRedisSerializer implements RedisSerializer<String> {
@Value("${system.id}")
private String systemId;
@Override
public byte[] serialize(String s) throws SerializationException {
String keyPrefix = systemId + ":";
String key = keyPrefix + s;
return key.getBytes(StandardCharsets.UTF_8);
}
@Override
public String deserialize(byte[] bytes) throws SerializationException {
String keyPrefix = systemId + ":";
String key = new String(bytes, StandardCharsets. UTF_8);
int indexOf = key. indexOf(keyPrefix);
if (indexOf > 0) {
log.info("key missing prefix");
} else {
int index = indexOf + keyPrefix. length();
key = key.substring(index);
}
log.info("saveKey:{}", key);
return key;
}
}
@Slf4j
@Component
public class CustomRedisKeySerializer implements CacheKeyPrefix {
@Value("${system.id}")
private String systemId;
@Override
public String compute(String cacheName) {
// You need to customize the key generation rules, and add the system prefix before the key
String keyPrefix = systemId + ":";
return keyPrefix + cacheName + "::";
}
}
@Component
public class RedisUtils {
@Resource
private RedisTemplate<String, Object> redisTemplate;
/**
* Specifies the cache expiration time
*
* @param key key
* @param time time (seconds)
*/
public void expire(String key, long time) {
try {
if (time > 0) {
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Get the expiration time according to the key
*
* @param key key cannot be null
* @return time (seconds) return 0 means it is permanent
*/
public long getExpire(String key) {
Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);
return ObjectUtils.isEmpty(expire) ? 0L : expire;
}
/**
* Determine whether the key exists
*
* @param key key
* @return true exists false does not exist
*/
public boolean hasKey(String key) {
try {
return Boolean.TRUE.equals(redisTemplate.hasKey(key));
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* delete cache
*
* @param key can pass one value or more
*/
@SuppressWarnings("unchecked")
public void del(String... key) {
if (key != null & amp; & amp; key. length > 0) {
if (key. length == 1) {
redisTemplate.delete(key[0]);
} else {
redisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));
}
}
}
// =============================String==================== ==========
/**
* Ordinary cache acquisition
*
* @param key key
* @return value
*/
public Object get(String key) {
return key == null ? null : redisTemplate.opsForValue().get(key);
}
/**
* Ordinary cache put
*
* @param key key
* @param value value
* @return true success false failure
*/
public boolean set(String key, Object value) {
try {
redisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Ordinary cache is put in and set time
*
* @param key key
* @param value value
* @param time time (seconds) time must be greater than 0, if time is less than or equal to 0, it will be set indefinitely
* @return true success false failure
*/
public boolean set(String key, Object value, long time) {
try {
if (time > 0) {
redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* increment
*
* @param key key
* @param delta How much to increase (greater than 0)
* @return incremented result
*/
public long incr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("Increment factor must be greater than 0");
}
Long increment = redisTemplate.opsForValue().increment(key, delta);
return ObjectUtils.isEmpty(increment) ? 0L : increment;
}
/**
* decrement
*
* @param key key
* @param delta how much to reduce (less than 0)
* @return long decremented result
*/
public long decr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("The decrement factor must be greater than 0");
}
Long increment = redisTemplate.opsForValue().increment(key, -delta);
return ObjectUtils.isEmpty(increment) ? 0L : increment;
}
// =================================Map================ ===================
/**
* HashGet
*
* @param key key cannot be null
* @param item item cannot be null
* @return value
*/
public Object hget(String key, String item) {
return redisTemplate.opsForHash().get(key, item);
}
/**
* Get all key values corresponding to hashKey
*
* @param key key
* @return corresponding multiple key values
*/
public Map<Object, Object> hmget(String key) {
return redisTemplate.opsForHash().entries(key);
}
/**
* HashSet
*
* @param key key
* @param map corresponds to multiple key values
* @return true success false failure
*/
public boolean hmset(String key, Map<String, Object> map) {
try {
redisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* HashSet and set the time
*
* @param key key
* @param map corresponds to multiple key values
* @param time time (seconds)
* @return true success false failure
*/
public boolean hmset(String key, Map<String, Object> map, long time) {
try {
redisTemplate.opsForHash().putAll(key, map);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put data into a hash table, if it does not exist, it will be created
*
* @param key key
* @param item item
* @param value value
* @return true success false failure
*/
public boolean hset(String key, String item, Object value) {
try {
redisTemplate.opsForHash().put(key, item, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put data into a hash table, if it does not exist, it will be created
*
* @param key key
* @param item item
* @param value value
* @param time Time (seconds) Note: If the existing hash table has time, the original time will be replaced here
* @return true success false failure
*/
public boolean hset(String key, String item, Object value, long time) {
try {
redisTemplate.opsForHash().put(key, item, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Delete the value in the hash table
*
* @param key key cannot be null
* @param item item can be multiple and cannot be null
*/
public void hdel(String key, Object... item) {
redisTemplate.opsForHash().delete(key, item);
}
/**
* Determine whether there is a value for this item in the hash table
*
* @param key key cannot be null
* @param item item cannot be null
* @return true exists false does not exist
*/
public boolean hHasKey(String key, String item) {
return redisTemplate.opsForHash().hasKey(key, item);
}
/**
* hash increment If it does not exist, it will create one and return the newly added value
*
* @param key key
* @param item item
* @param by how much to increase (greater than 0)
* @return hash incremented result
*/
public double hincr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, by);
}
/**
* hash decrement
*
* @param key key
* @param item item
* @param by to reduce (less than 0)
* @return hash decremented result
*/
public double hdecr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, -by);
}
// ================================================= ==========
/**
* Get all the values in the Set according to the key
*
* @param key key
* @return Set<Object>
*/
public Set<Object> sGet(String key) {
try {
return redisTemplate.opsForSet().members(key);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Query from a set according to value, whether it exists
*
* @param key key
* @param value value
* @return true exists false does not exist
*/
public boolean sHasKey(String key, Object value) {
try {
return Boolean.TRUE.equals(redisTemplate.opsForSet().isMember(key, value));
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put the data into the set cache
*
* @param key key
* @param values value can be multiple
* @return number of successes
*/
public long sSet(String key, Object... values) {
try {
Long add = redisTemplate.opsForSet().add(key, values);
return ObjectUtils.isEmpty(add) ? 0L : add;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* Put the set data into the cache
*
* @param key key
* @param time time (seconds)
* @param values value can be multiple
* @return number of successes
*/
public long sSetAndTime(String key, long time, Object... values) {
try {
Long count = redisTemplate.opsForSet().add(key, values);
if (time > 0) {
expire(key, time);
}
return ObjectUtils.isEmpty(count) ? 0L : count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* Get the length of the set cache
*
* @param key key
* @return Get the length of the set
*/
public long sGetSetSize(String key) {
try {
Long size = redisTemplate.opsForSet().size(key);
return ObjectUtils.isEmpty(size) ? 0L : size;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* Remove the value of value
*
* @param key key
* @param values value can be multiple
* @return the number of removed
*/
public long setRemove(String key, Object... values) {
try {
Long count = redisTemplate.opsForSet().remove(key, values);
return ObjectUtils.isEmpty(count) ? 0L : count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
// ================================= list================== ==================
/**
* Get the content of the list cache
*
* @param key key
* @param start start
* @param end end 0 to -1 represent all values
* @return List<Object>
*/
public List<Object> lGet(String key, long start, long end) {
try {
return redisTemplate.opsForList().range(key, start, end);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Get the length of the list cache
*
* @param key key
*/
public long lGetListSize(String key) {
try {
Long size = redisTemplate.opsForList().size(key);
return ObjectUtils.isEmpty(size) ? 0L : size;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* Get the value in the list by index
*
* @param key key
* @param index index index>=0, 0 is the header, 1 is the second element, and so on; when index<0, -1 is the end of the table, -2 is the second-to-last element, and so on
* @return Object
*/
public Object lGetIndex(String key, long index) {
try {
return redisTemplate.opsForList().index(key, index);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* Put the list into the cache
*
* @param key key
* @param value value
*/
public boolean lSet(String key, Object value) {
try {
redisTemplate.opsForList().rightPush(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put the list into the cache and specify the expiration time
*
* @param key key
* @param value value
* @param time time (seconds)
*/
public boolean lSet(String key, Object value, long time) {
try {
redisTemplate.opsForList().rightPush(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put the list into the cache in batches
*
* @param key key
* @param value value
*/
public boolean lSet(String key, List<Object> value) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Put the list into the cache
*
* @param key key
* @param value value
* @param time time (seconds)
* @return Boolean
*/
public boolean lSet(String key, List<Object> value, long time) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Modify a piece of data in the list according to the index
*
* @param key key
* @param index index
* @param value value
* @return operation result
*/
public boolean lUpdateIndex(String key, long index, Object value) {
try {
redisTemplate.opsForList().set(key, index, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* Remove N values as value
*
* @param key key
* @param count how many to remove
* @param value value
* @return the number of removed
*/
public long lRemove(String key, long count, Object value) {
try {
Long remove = redisTemplate.opsForList().remove(key, count, value);
return ObjectUtils.isEmpty(remove) ? 0L : remove;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
}