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Basics of Data Search in Elasticsearch

by Anurag Srivastava , Aug 4, 2018, 7:02:21 AM

Day by day the volume of data is increasing as we are moving towards the digital age and transforming things into the Internet of things. Take a simple example of smartwatch what it does, it measures the steps, BP, heart rate, etc and pushing to a server from where we can access our health-rel...

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Elasticsearch Rest API

by Anurag Srivastava , Jul 31, 2018, 6:16:42 PM

Elasticsearch provides extensive REST APIs to integrate, query and manage the data. In this blog, I will discuss some of the main APIs which we can use regularly from an extensive list of REST APIs.We can do many things using Elasticsearch REST APIs like:Check our cluster, ...

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Bucket Aggregation in Elasticsearch

by Anurag Srivastava , Aug 29, 2018, 7:15:06 PM

Bucket aggregation is like a group by the result of the RDBMS query where we group the result with a certain field. In the case of Elasticsearch, we use to bucket data on the basis of certain criteria. In metrics aggregations, we can calculate metrics on a field while in the bucket we d...

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Wildcard and Boolean Search in Elasticsearch

by Anurag Srivastava , Aug 10, 2018, 7:14:40 PM

In my last blog, I have explained basic Elasticsearch queries using which we can create basic search queries. Now in this blog, I will explain advanced search queries using which we can construct more complex queries like boolean queries, wildcard queries, etc. So let's start to create the...

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Introduction to Elasticsearch

by Anurag Srivastava , Apr 14, 2018, 1:18:05 PM

Next blogs on Elasticsearch of this series:Elasticsearch Installation and Configuration on Ubuntu 14.04...

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Log analysis with Elastic stack

by Anurag Srivastava , Jan 31, 2018, 6:11:29 AM

A slow application can trigger a series of escalating calls through an IT organization and whenever the application starts giving issues, we need to troubleshoot it and fix it as soon as possible. In the process, our log files are normally among the first places where we go when we start the trouble...

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Configure Logstash to send MongoDB data into Elasticsearch

by Anurag Srivastava , Mar 9, 2019, 8:20:38 AM

In this blog, I am going to explain how you can push your MongoDB data into Elasticsearch. You may be thinking what is the benefit of sending MongoDB data into Elasticsearch so let me explain to you the scenarios where you may want to push MongoDB data into Elasticsearch.If yo...

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Metrics Aggregation in Elasticsearch

by Anurag Srivastava , Aug 18, 2018, 6:02:20 PM

In my previous blog, I have explained about basic aggregation. Now, let us pick the metrics aggregation and see how we can create these types of aggregations. Metrics aggregation are those aggregation where we apply different types of metrics on fields of Elasticsearch documents like min, ...

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Introduction to Elasticsearch Aggregations

by Anurag Srivastava , Aug 14, 2018, 4:47:56 PM

Aggregations provide us the option to group and extract statistics from our data. aggregations give the insight of our data and can be used for a wide range of problems like we can use Elasticsearch aggregations for creating a recommendation engine through which we can implement the recommendatio...

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How to create Elasticsearch Cluster

by Anurag Srivastava , Apr 6, 2019, 8:41:41 PM

Many times people ask me the question about configuring an Elasticsearch cluster where they can distribute the load on different servers. There are too many other questions like how to decide on server configuration, which architecture to follow, how many shards to keep, etc, etc. I will explain ...

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