Zero downtime ElasticSearch reindexing using Laravel

Description

https://engineering.carsguide.com.au/elasticsearch-zero-downtime-reindexing-e3a53000f0ac

Setup

Database migration

Please create the world database and populate data from the following url.

https://dev.mysql.com/doc/world-setup/en/world-setup-installation.html

Index creation

php artisan elastic:create-index

The above command will create an index like world_1544094130 with a timestamp appended. After that, it will create two aliases world_write and world_read. Both aliases will point at the index world_1544094130.

Zero downtime reindexing

php artisan elastic:reindex