Since search engines like Apache Solr and ElasticSearch are easy to use and setup more and more applications are using them to index their content and make it searchable by the user. After all the underlying Lucene index engine provides far more powerful features then a plain MySQL full text search or similar solutions. With Apache Solr and ElasticSearch you can enhance the performance and the functionality of your website. What we often stumble across, though, is the naiive approach of synchronizing both data storages which tends to fail in multiple ways. Let me show how you can fix this.
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