}));

        facetCache = CacheBuilder.newBuilder().maximumSize(1000).expireAfterWrite(facetCacheDuration, TimeUnit.SECONDS).build();

        textFragmentPrefixLength = fessConfig.getQueryHighlightTextFragmentPrefixLengthAsInteger();
        textFragmentSuffixLength = fessConfig.getQueryHighlightTextFragmentSuffixLengthAsInteger();
        textFragmentSize = fessConfig.getQueryHighlightTextFragmentSizeAsInteger();

            return getAsInteger(FessConfig.QUERY_HIGHLIGHT_TEXT_FRAGMENT_SIZE);
        }

        public String getQueryHighlightTextFragmentPrefixLength() {
            return get(FessConfig.QUERY_HIGHLIGHT_TEXT_FRAGMENT_PREFIX_LENGTH);
        }

        public Integer getQueryHighlightTextFragmentPrefixLengthAsInteger() {
            return getAsInteger(FessConfig.QUERY_HIGHLIGHT_TEXT_FRAGMENT_PREFIX_LENGTH);
        }