Spring Boot:

Reactive Programming

Spring Events

Send and receive events using Apache Kafka

How to protect Spring Boot microservices using OAuth2?

HTTP API vs REST API – How to create real REST API s in Spring Boot?

Server side validation

Custom health check for microservices

How to schedule tasks?

How to write a generic REST client ?

How to deal with optional request parameters?

How to write an environment specific REST API?

How to download a microsoft word document through REST API?

How to create a custom annotation?

How to automate database migration?

How to convert your app to serve over HTTPS instead of HTTP?

How to consume a REST API protected by HTTPS?

How to read http request object inside exception handler?

How to log incoming requests?

How to run environment specific code ?

How to populate application.properties dynamically?

How to dockerize spring boot application?

How to add social login to spring boot app?

How to trace distributed logs using Spring Cloud Sleuth?

How to enable CORS for specific domains?

Spring Security:

How to implement authentication?

How to implement authorization?

Spring OpenFeign:

How to call a REST service declaratively from Spring?

How to call a basic authenticated REST service using Open Feign?

How to send multiple headers in a http request?

Spring REST:

How to redirect to an external URL?

How to interpret and modify REST requests?

How to pass URL and Query parameters using REST template?

How to retrieve URL and Query parameters in Spring REST?

How to map Enum Types to JSON requests?

How to modify a REST service response without modifying existing code?

How to consume a REST service which accepts form data?

How to handle read time out in REST template?

Spring Data:

How to handle pagination and sorting in Spring Data?

How to generate REST services automatically for data repositories?

How to integrate SQLite with Spring Boot?

How to write custom queries at method level in Spring Data?

How to load initial data in Spring Boot?

How to delete records in Spring Data based on multiple field values?

Spring WebFlux

How to create a Reactive REST service using Spring WebFlux?

How to use Spring WebClient to invoke reactive REST services ?