@IocBean(name="shiroCacheManager")
	public CacheManager getCacheManager() {
		switch (conf.get(PROP_SESSION_CACHE_TYPE, "memory")) {
		case "ehcache":
			return ioc.get(CacheManager.class, "shiroEhcacheCacheManager");
		case "redis":
			//return ioc.get(CacheManager.class, "shiroRedisCacheManager");
		case "lcache":
			return ioc.get(CacheManager.class, "shiroLcacheCacheManager");
		case "memory":
			return new MemoryConstrainedCacheManager();
		default:
			throw new ShiroException("unkown shiro.session.cache.type=" + conf.get("shiro.session.cache.type"));
		}
		
	}

NB源码中发现是注释了，这个还没有实现吗？还是有问题呢？