README

A powerful Laravel Scout driver for Elasticsearch with advanced features like zero-downtime reindexing and lazy backfill.

Features

• Elasticsearch Integration: Full integration with Elasticsearch 8.x
• Zero-Downtime Reindexing: Update mappings without service interruption
• Lazy Backfill: Efficiently add new fields to existing documents
• Advanced Mapping: Custom field mapping support
• Authentication: Basic authentication and SSL support
• Artisan Commands: Built-in commands for common operations

Installation

composer require laravel-scout/elasticsearch

Configuration

Add the following to your .env file:

SCOUT_DRIVER=elasticsearch
ELASTICSEARCH_HOST=https://your-elasticsearch-host:9200
ELASTICSEARCH_USER=elastic
ELASTICSEARCH_PASS=your-password
ELASTICSEARCH_INDEX_PREFIX=laravel_scout
ELASTICSEARCH_SSL_VERIFICATION=false

Usage

Basic Setup

1. Configure Scout in config/scout.php:

'elasticsearch' => [
    'hosts' => [
        env('ELASTICSEARCH_HOST', 'localhost:9200'),
    ],
    'username' => env('ELASTICSEARCH_USER', 'elastic'),
    'password' => env('ELASTICSEARCH_PASS', ''),
    'index_prefix' => env('ELASTICSEARCH_INDEX_PREFIX', 'laravel_scout'),
    'number_of_shards' => env('ELASTICSEARCH_NUMBER_OF_SHARDS', 1),
    'number_of_replicas' => env('ELASTICSEARCH_NUMBER_OF_REPLICAS', 0),
    'ssl_verification' => env('ELASTICSEARCH_SSL_VERIFICATION', false),
],

1. Make your model searchable:

use Laravel\Scout\Searchable;

class Post extends Model
{
    use Searchable;

    public function toSearchableArray()
    {
        return [
            'id' => $this->id,
            'title' => $this->title,
            'content' => $this->content,
            'misc' => $this->misc ?? 'others',
        ];
    }

    public function getSearchableMapping()
    {
        return [
            'properties' => [
                'id' => ['type' => 'integer'],
                'title' => [
                    'type' => 'text',
                    'analyzer' => 'standard',
                    'fields' => [
                        'keyword' => ['type' => 'keyword']
                    ]
                ],
                'content' => ['type' => 'text'],
                'misc' => [
                    'type' => 'text',
                    'analyzer' => 'standard',
                    'fields' => [
                        'keyword' => ['type' => 'keyword']
                    ]
                ],
            ]
        ];
    }
}

Artisan Commands

Test Connection

php artisan scout:test-elasticsearch

Create Index

php artisan scout:index posts

Import Data

php artisan scout:import "App\Models\Post"

Zero-Downtime Reindex

php artisan scout:reindex-zero-downtime "App\Models\Post"

Lazy Backfill (Add New Fields)

# Add a new field with default value
php artisan scout:lazy-backfill misc --type=text

# Add a keyword field
php artisan scout:lazy-backfill priority --type=keyword

# Force backfill all documents
php artisan scout:lazy-backfill status --type=keyword --force

Add New Fields and Reindex

# Add new fields and reindex the model
php artisan scout:add-fields-reindex "App\Models\Post"

Large Dataset Reindexing

# Reindex large datasets with batch processing
php artisan scout:reindex-large-dataset "App\Models\Post" --batch-size=1000

Seed Large Dataset

# Seed large datasets for testing
php artisan scout:seed-large-dataset "App\Models\Post" --count=10000

Advanced Features

Zero-Downtime Reindexing

This feature allows you to update Elasticsearch mappings without downtime:

1. Creates a new index with updated mapping
2. Reindexes all data from the old index
3. Switches to the new index seamlessly
4. Maintains the original index name

Lazy Backfill

Efficiently add new fields to existing documents:

1. Adds the field to the index mapping
2. Uses update_by_query to populate existing documents
3. Sets default values for new fields
4. No full reindex required

Custom Field Types

Supported field types:

• text - Full-text search with keyword sub-field
• keyword - Exact match searches
• integer - Numeric searches
• date - Date range queries
• boolean - Boolean filters
• float - Decimal searches

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests
5. Submit a pull request

License

The MIT License (MIT). Please see License File for more information.