springboot 配合多個cachemanager

springboot集成 redis
需要引入

官方推進用lettuce連接池，Lettuce的連接是基於Netty的，連接實例（StatefulRedisConnection）可以在多個線程間並發訪問，應為StatefulRedisConnection是線程安全的

@Configuration
public class EhcacheConfig {


    public interface CacheManagerNames {
        String REDIS_CACHE_MANAGER = "redisCacheManager";
        String EHCACHE_CACHE_MANAGER = "ehCacheManager";
    }

    @Bean(name = CacheManagerNames.REDIS_CACHE_MANAGER)
    public RedisCacheManager redisCacheManager(RedisConnectionFactory factory) {
        FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<>(Object.class);
        RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
        configuration = configuration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(fastJsonRedisSerializer)).entryTtl(Duration.ofDays(30));
        return RedisCacheManager
                .builder(RedisCacheWriter.nonLockingRedisCacheWriter(factory))
                .cacheDefaults(configuration).build();

    }

    @Bean
    public EhCacheManagerFactoryBean cacheManagerFactoryBean(){
        EhCacheManagerFactoryBean bean = new EhCacheManagerFactoryBean();
        bean.setConfigLocation(new ClassPathResource("ehcache.xml"));
        bean.setShared(true);
        return bean;
    }
        /**
         * @Description @Primary 設置默認加載manager
         * @param bean
         * @return org.springframework.cache.ehcache.EhCacheCacheManager
         * @date 2019/5/31 4:38 PM
         * @auther lixin
         */
    @Bean(name = CacheManagerNames.EHCACHE_CACHE_MANAGER)
    @Primary
    public EhCacheCacheManager ehCacheCacheManager(EhCacheManagerFactoryBean bean){
        return new EhCacheCacheManager(bean.getObject());
    }

    /**
     * @Description 自定義緩存  key規則
     * @return org.springframework.cache.interceptor.KeyGenerator
     * @date 2019/5/31 4:38 PM
     * @auther lixin
     */
    @Bean
    public KeyGenerator keyGenerator() {
        return (target, method, params) -> {
            StringBuilder sb = new StringBuilder();
            sb.append(target.getClass().getName());
            sb.append(method.getName());
            for (Object obj : params) {
                // 由於參數可能不同, hashCode肯定不一樣, 緩存的key也需要不一樣
                sb.append(JSON.toJSONString(obj).hashCode());
            }
            return sb.toString();
        };
    }


    /**
     *  設置 redis 數據默認過期時間，默認1天
     *  設置@cacheable 序列化方式
     * @return
     */
    @Bean
    public RedisCacheConfiguration redisCacheConfiguration(){
        FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<>(Object.class);
        RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig();
        configuration = configuration.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(fastJsonRedisSerializer)).entryTtl(Duration.ofDays(1));
        return configuration;
    }
}
序列化 需要自定義

 FastJsonRedisSerializer 類

public class FastJsonRedisSerializer<T> implements RedisSerializer<T> {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private Class<T> clazz;

    public FastJsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }

    @Override
    public byte[] serialize(T t) throws SerializationException {
        if (t == null) {
            return new byte[0];
        }
        return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if (bytes == null || bytes.length <= 0) {
            return null;
        }
        String str = new String(bytes, DEFAULT_CHARSET);
        return (T) JSON.parseObject(str, clazz);
    }

}

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