<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Sun, 05 Apr 2026 09:26:40 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/@hongsgo/rss" rel="self" type="application/rss+xml"/><item><title><![CDATA[Elasticsearch Developer Course Review]]></title><description><![CDATA[Day 1 shard는 하나의 Lucene instance이며, ElasticSearch의 각 node들에 분산되어 처리되는 작업 단위이다. cluster들은 nodes로 구성되며, 각 nodes에는 index의 (primary/replica) shard들이 있다. shard들은 다시 여러개의 segments들로 구성되며, segments들은 immutable속성을]]></description><link>http://direct.ecency.com/elasticsearch/@hongsgo/elasticsearch-developer-course-review</link><guid isPermaLink="true">http://direct.ecency.com/elasticsearch/@hongsgo/elasticsearch-developer-course-review</guid><category><![CDATA[elasticsearch]]></category><dc:creator><![CDATA[hongsgo]]></dc:creator><pubDate>Fri, 04 May 2018 08:44:15 GMT</pubDate></item><item><title><![CDATA[mysql problems-with-null]]></title><description><![CDATA[Mysql에 마이그레이션에 대한 검증 쿼리를 만들다가 null값 조건 사용과 관련하여 미처 몰랐던 내용을 알게되어 공유 드립니다. 질문 : 아래 A/B의 SELECT 결과 값은 무엇 일까요 A. SELECT IF(NULL != 11, ‘True’, ‘False’); B. SELECT IF(NULL != NULL , ‘True’, ‘False’); 결과 A.]]></description><link>http://direct.ecency.com/mysql/@hongsgo/mysql-problems-with-null</link><guid isPermaLink="true">http://direct.ecency.com/mysql/@hongsgo/mysql-problems-with-null</guid><category><![CDATA[mysql]]></category><dc:creator><![CDATA[hongsgo]]></dc:creator><pubDate>Fri, 04 May 2018 08:36:27 GMT</pubDate></item><item><title><![CDATA[Avro Schema Registry Convert To ESMapping]]></title><description><![CDATA[GitHubLink I saw the below issue at ES forum. how-to-convert-avro-schema-to-elastic-search-mapping So I made this project for solving it. It has some features. First, you can load Avro schema using Registry]]></description><link>http://direct.ecency.com/avro/@hongsgo/avro-schema-registry-convert-to-esmapping</link><guid isPermaLink="true">http://direct.ecency.com/avro/@hongsgo/avro-schema-registry-convert-to-esmapping</guid><category><![CDATA[avro]]></category><dc:creator><![CDATA[hongsgo]]></dc:creator><pubDate>Fri, 04 May 2018 08:29:21 GMT</pubDate><enclosure url="https://images.ecency.com/p/9vWp6aU4y8kyB98PidaGxi7Z7Phymni3bohLuSRSnuTJqVwCWG2UdZBpRAdRf5j8zitomhChZUdYfs6szHzMzpKdcjvuhG3iSXChHNm2yx9QAxabQy9fNbwxoCE9NxSPxeYqwMbNZxFhHeF3r?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Execute Around Pattern]]></title><description><![CDATA[Github Link public class ExecuteAround { //data.txt //1 //2 public static final String RESOURCE_FILE_PATH = "data/data.txt"; @Test public void testSingleLine() throws IOException, URISyntaxException]]></description><link>http://direct.ecency.com/execute/@hongsgo/execute-around-pattern</link><guid isPermaLink="true">http://direct.ecency.com/execute/@hongsgo/execute-around-pattern</guid><category><![CDATA[execute]]></category><dc:creator><![CDATA[hongsgo]]></dc:creator><pubDate>Fri, 04 May 2018 07:14:30 GMT</pubDate></item></channel></rss>