tuanh.net
Spring Boot's Caching Features

Spring Boot's Caching Features

Caching is a performance optimization technique that stores the results of expensive operations, reducing response time and system load. Spring Boot provides a convenient and powerful caching abstraction. This article will explore how to leverage...

Tuanhdotnet's photo
Tuanhdotnet
·

2 min read

1. Introduction to Caching

Caching is the process of temporarily storing the results of operations to reduce the need for recomputation or retrieval of data from the original source. When a request arrives, the system checks if the data is already in the cache. If so, it returns the data from the cache without performing the operation or query again. This helps to reduce the load on the system and improve response time.

Benefits of caching:
         + Reduced response time: Retrieving data from the cache is faster than recomputing or retrieving it from a database.
         + Reduced system load: Decreases the number of queries to a database or external service.
         + Cost savings: Reduces resource usage and costs for external services."

2. Caching in Spring Boot

Spring Boot offers a streamlined approach to caching through the spring-boot-starter-cache dependency. By leveraging this dependency, you can effortlessly set up and implement caching within your application. This guide will walk you through the configuration and usage of caching in Spring Boot.

2.1. Adding Dependencies

Pom.xml: 

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

Build.gradle: 

implementation 'org.springframework.boot:spring-boot-starte..

2.2 Cache Configuration

Spring Boot supports various cache backends such as ConcurrentHashMap, Ehcache, Redis, Hazelcast, and more. You can configure the cache backend in your application's configuration file.

Example of configuring cache with Ehcache: 

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
    <groupId>org.ehcache</groupId>
    <artifactId>ehcache</artifactId>
</dependency>

2.3 Creating the Ehcache Configuration File

Creating the Ehcache Configuration File: Create a configuration file named ehcache.xml in the src/main/resources directory: 

<config xmlns:xsi="w3.org/2001/XMLSchema-instance"
        xmlns="ehcache.org/v3"
        xsi:schemaLocation="ehcache.org/v3 ehcache.org/v3"
        xmlns:xsi="w3.org/2001/XMLSchema-instance">

    <cache alias="exampleCache">
        <key-type>java.lang.String</key-type>
        <value-type>java.lang.String</value-type>
        <heap unit="entries">100</heap>
    </cache>

</config>

2.4 Spring Boot configuration:

spring:
  cache:
    type: ehcache

2.5 Enable cache

Read more at : Spring Boot's Caching Features

Spring