Introduction It’s often that queries used in Elasticsearch return an extremely large number of results. This may be ok for a computer but too many results can be hard for us to process mentally. In these cases it’s useful to limit the number of results your query results through pagination. We’ll show you how use … Continued

Introduction When you’re determining the average for values in a dataset, sometimes it doesn’t make sense to treat all the values equally. For example, if you’re calculating student grades, doing inventory cost accounting, or computing average bond yields, it’s helpful to assign a relative importance to each value in your dataset. That’s where a weighted … Continued

Introduction Aggregation is a very powerful functionality in Elasticsearch. In this article we’ll be showing you how to use aggregations to find the minimum value for a field in a dataset. Aggregations can do many things like histograms, sums, or averages but finding the min and max are a good way to get your feet … Continued

Introduction Aggregation is a very powerful functionality in Elasticsearch. In this article we’ll be showing you how to use aggregations with NodeJS to find the maximum value for a field in a dataset. Aggregations can do many things like histograms, sums, or averages but finding the max and min are a good way to get … Continued

Introduction If you’re running a NodeJS application with Elasticsearch it won’t be long before you’ll need to compute the average of field in your dataset. Computing the average of a field is a common practice when using Elasticsearch. You might need to compute the average user rating of a song, movie, or product. Averages are … Continued

Introduction If you’re interacting with Elasticsearch through a NodeJS application, you’ll probably need to update a document at some point. It’s one of the most common tasks in database management– a user may update their address or credit card information, or the price of a product may need to be changed. Regardless of the situation, … Continued

Introduction If you’re interacting with Elasticsearch using a NodeJS application, there may be occasions when you need to delete a specific document. Fortunately, it’s easy to use the npm Elasticsearch module to communicate with Elasticsearch and issue this command. In this tutorial, we’ll learn how to delete a document by id in Elasticsearch using NodeJS. … Continued

Introduction Elasticsearch is very compatible with popular applications that run on the backend. NodeJS for example, is one such application that when combined with Elasticsearch, you’re likely to expand your productivity. Because NodeJS is fast, your efficiency increases when you use Elasticsearch with it to run Javascript on the server-side and then let it run … Continued

Introduction If you’re interacting with Elasticsearch through a NodeJS application, you’ll probably need to update a document at some point. It’s one of the most common tasks in database management– a user may update their address or credit card information, or the price of a product may need to be changed. Regardless of the situation, … Continued