Creating the CRUD and admin systemSeeding the post tableWhat is Elasticsearch?Installing Elasticsearch and the PHP clientBuilding a PHP Elasticsearch toolAdding documents to our ElasticsearchQuerying ElasticsearchInstalling LogstashSetting up the Logstash configurationInstalling PHP RedisEncoding and decoding JSON messagesStoring Apache logs in ElasticsearchGetting filtered data to display with HighchartsDashboard app for viewing Elasticsearch logsSimple search engine with result cachingCache basicsCache invalidation of Redis dataUsing browser localStorage as cacheWorking with streamsStoring and searching XML documents using PHPUsing Elasticsearch to search a social network databaseDisplaying randomized search engine resultsSummary