Describe your experience using Elasticsearch in practical projects.

In practical PHP projects, I used Elasticsearch for implementing full-text search and analytics on large volumes of data. Key points:

• Indexing data from databases (e.g., MySQL) for fast search.
• Using PHP clients (e.g., official Elasticsearch PHP client) to interact with the cluster.
• Setting up mappings for proper data type handling and full-text analysis.
• Implementing complex queries with filters, aggregations, and sorting.

Example of a simple search query on an index:

$params = [
    'index' => 'products',
    'body'  => [
        'query' => [
            'match' => [
                'name' => 'смартфон'
            ]
        ]
    ]
];

$response = $client->search($params);

Elasticsearch significantly sped up search and improved result quality compared to regular SQL queries.