@Override
    public ICache builderCache(final String cacheConfig) {
        return new MemoryCache();
    }
builder the cache with config.

@param cacheConfig the cache config
@return cache instance
shenyu-plugin/shenyu-plugin-cache/shenyu-plugin-cache-memory/src/main/java/org/apache/shenyu/plugin/cache/memory/MemoryCacheBuilder.java