How to keep Firebase in sync with another database

Question

We need to keep our Firebase data in sync with other databases for full-text search (in ElasticSearch) and other kinds of

Answer 1

For search queries, you can integrate directly with ElasticSearch; there is no need to sync with a secondary database. Firebase has a blog post about integrating and a lib, Flashlight, to make this quick and painless.

Answer 2

Another option is to use the logstash-input-firebase Logstash plugin in order to listen to changes in your Firebase real-time database(s) and forward the data in real-time to Elasticsearch using an elasticsearch output.