Elasticsearch with Nestjs Setup Elasticsearch Module by Elias Bracaval Jan, 2025

It can be used with Elasticsearch to create powerful search and analytics applications. We can declare the search service as a dependency injection in the module. We can have a look at figure 2.1 above that the search service is implemented as a module in full-stack developer NestJS. Search service will inherit the attributes of Elasticsearch to take its method.

💡 Why This Guide Exists

The product service will inject our search service and implement the search functionality. Let’s going to implement the observer pattern to listen to the events that happen in the product entity and update the Elasticsearch product index data. And undoubtedly our search service will extend the base Elasticsearch, and implement all methods that declared in the search interface. Some of the methods like a bulk , update have invoked from Elasticsearch.

Add index to a module

You can check out the elasticsearch Query DSL to construct more complex queries. By doing so, we can use the service with anything in our project and giving the type of result we expecting to have by a generic T. Start with the Basic Setup section and follow the guide sequentially. Again, after doing this you’ll have to use the curl command above to unlock the indices, but after that they should not go into read-only mode again. The current version (2.x) is fully compatible with Elasticsearch 8. For projects using nestjs developer Elasticsearch 7, use the previous version (1.x).

• Obviously, our factory behaves like every other one (might be async and is able to inject dependencies through inject).
• Continuously to the previous section, in this section, we are going to integrate Elasticsearch service into our application.
• Now lets create our backend that would communicate with our elastic search engine.
• Elastic is a third-party service that certainly irrelevant in the application’s components.
• Before implementing the Elasticsearch in our application, let’s install all the dependencies needed.

Setup Vue app

It is based on the Apache Lucene™ library and is developed in Java. It works on structured, unstructured, numerical and geospatial data. To use Elasticsearch with Nest.js, you will need to install the @nestjs/elasticsearch package.