* @return The created filter cache.
     */
    protected LoadingCache<String, List<Pattern>> createFilterCache(final String type) {
        return CacheBuilder.newBuilder()//
                .expireAfterWrite(filterCacheExpireAfterWrite, TimeUnit.SECONDS)//
                .build(new CacheLoader<String, List<Pattern>>() {

                    /**
                     * Loads filter patterns for the given session ID.