Spring Framework
Spring Framework - MVC, Dependency Injection, Spring Hibernate, Spring Data JPA, Spring Boot and Spring Cloud for Microservices Architecture.
S3 File upload & download with AWS Java SDK v2
Upasana | August 23, 2022 | 4 min read | 4,118 views | AWS Tutorials
Spring boot program for S3 upload and download using AWS Java SDK v2. Object level operations on S3 bucket including PutObject, GetObject and GetUrl operation on S3 Objects
Read ArticleSpring RestTemplate Basic Authentication
Upasana | December 26, 2020 | 3 min read | 2,287 views
We will configure RestTemplate with basic authentication credentials in a Spring Boot application using RestTemplateBuilder.
Read ArticleDialoglfow fulfillment with Spring Boot
Upasana | November 21, 2020 | 2 min read | 649 views
In this tutorial we will learn how to implement Google Dialogflow response fulfilment webhook API with a Spring Boot application.
Read ArticleRun method on Spring Boot startup
Upasana | November 21, 2020 | 3 min read | 15,465 views | spring-boot
Spring Boot provides different mechanisms to run a specific method at Application Startup: PostConstruct, CommandLineRunner, ApplicationReadyEvent and ApplicationRunner
Read ArticleElasticsearch with Spring Boot + Spring Data
Upasana | November 18, 2020 | | 14 views
In this article, we will discuss how to configure & use Elasticsearch Engine with Spring Boot & Spring Data using High Level REST Client provided by Elasticsearch.
Read ArticleDownload a file using Spring RestTemplate
Upasana | October 17, 2020 | | 122 views
In this article we will explore 2 different ways to download a file over Http using Spring RestTemplate.
Read ArticleN+1 problem in Hibernate & Spring Data JPA
Upasana | October 03, 2020 | 4 min read | 3,088 views
N+1 problem is a performance issue in Object Relational Mapping that fires multiple Select Queries in database for a single select query at application layer. Hibernate provides multiple ways to identify and prevent this problem.
Read ArticleCustom TTL for Spring data Redis Cache
Upasana | October 01, 2020 | 2 min read | 2,978 views
Spring Boot 2.2 provides options to customize Redis Cache using RedisCacheManagerBuilderCustomizer enabling us to set custom value for TTL (time-to-live) for each of the cache.
Read ArticleUnresolved circular dependency in spring dependency injection
Upasana | September 30, 2020 | 3 min read | 1,690 views
This is most likely a design level problem and should be resolved by modifying the object level design. This problem indicates that two different Classes share the common responsibility and your design is lacking the abstraction of responsibilities.
Read ArticleSendgrid Dynamic Templates with Spring Boot
Upasana | September 22, 2020 | 2 min read | 0 views
In this tutorial we will use Twilio SendGrid Dynamic Templates for sending emails from a Spring Boot application.
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