我們使用 AWS Lambda (Java) 和 elasticsearch 客戶端連接到 AWS 上托管的 elasticsearch 實例。我在第一個請求上遇到了大約 2.5 秒的長時間等待（在冷啟動之上）。之后它非?？臁Ｎ艺娴牟恢肋@個延遲是從哪里來的，我正在嘗試優(yōu)化它。private void testPerformanceElasticSearch() throws Exception {        log.info("1. Before testing elasticsearch client");        AWS4Signer signer = new AWS4Signer();        signer.setServiceName("es");        signer.setRegionName("eu-west-1");        HttpRequestInterceptor interceptor = new AWSRequestSigningApacheInterceptor("es", signer, new DefaultAWSCredentialsProviderChain());        String endpoint = "https://" + Utils.getEnvironmentVariable("ELASTIC_SEARCH_ENDPOINT");        RestHighLevelClient restHighLevelClient = new RestHighLevelClient(RestClient.builder(HttpHost.create(endpoint)).setHttpClientConfigCallback(hacb -> hacb.addInterceptorLast(interceptor)));        log.info("2. After getting elasticsearch client");        log.info("3. Before doing a elasticsearch query");        log.info("4");        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();        log.info("5");        TermsQueryBuilder termsQueryBuilder = QueryBuilders.termsQuery("userId", "abc");        log.info("6");        boolQueryBuilder.must(termsQueryBuilder);        log.info("7");        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();        log.info("8");        searchSourceBuilder.query(boolQueryBuilder);        log.info("9");        SearchRequest searchRequest = new SearchRequest("users");        log.info("10");        searchRequest.source(searchSourceBuilder);        log.info("11");        restHighLevelClient.search(searchRequest);        log.info("12");        log.info("13. After testing elasticsearch");}關(guān)于如何改進這一點的任何建議？