# Elasticsearch

URL: https://donedeploy.com/technologies/elasticsearch/

Questions

## Elasticsearch: frequently asked

Elasticsearch or OpenSearch?

Both are capable. OpenSearch is the base of Amazon OpenSearch Service; Elasticsearch has Elastic's newer features and support. Licence needs and hosting often decide.

Why is our cluster slow or unstable?

Common causes are too many small shards, too little memory or heavy queries. We look at cluster metrics and query patterns before adding hardware.

Running Elasticsearch, or deciding whether to? Tell us what you have; the first consultation is free.

[Let's talk »](https://donedeploy.com/lets-talk/)