How do you configure Solr clusters in a Spring Boot application?

Table of Contents

• Introduction
• 1. Setting Up SolrCloud
  • Install and Configure ZooKeeper
  • Configure Solr Nodes
• 2. Configuring Spring Boot for SolrCloud
  • Maven Dependency
  • Application Properties
• 3. Practical Examples of Cluster Configuration
  • Example: Connecting to SolrCloud
  • Example: Querying the Cluster
• Conclusion

Introduction

Configuring Solr clusters in a Spring Boot application is essential for handling distributed search, ensuring high availability, and enabling load balancing. Solr clusters, often referred to as SolrCloud, rely on ZooKeeper for coordination and provide robust search capabilities. This guide explains how to set up and configure Solr clusters with Spring Boot.

1. Setting Up SolrCloud

Install and Configure ZooKeeper

SolrCloud requires ZooKeeper for cluster coordination.

1. Download ZooKeeper from ZooKeeper's official site.

2. Configure the zoo.cfg file for a multi-node ZooKeeper setup:

3. Start ZooKeeper on all nodes.

Configure Solr Nodes

1. Start Solr in cloud mode:

2. Create a collection with replicas and shards:

2. Configuring Spring Boot for SolrCloud

Maven Dependency

Ensure the following dependency is in your pom.xml:

Application Properties

Configure Solr to connect to the SolrCloud cluster:

3. Practical Examples of Cluster Configuration

Example: Connecting to SolrCloud

Example: Querying the Cluster

Conclusion

Configuring Solr clusters in a Spring Boot application involves setting up SolrCloud with ZooKeeper for coordination, ensuring distributed search and fault tolerance. With properties configured for SolrCloud, you can easily connect Spring Boot to a cluster and handle large-scale, resilient search operations. This approach improves performance, scalability, and reliability in enterprise applications.