Unlike the flatMap() method, the map() method of the Mono/Flux object in the Project Reactor will process the item being emitted, synchronously: In the image above, green, yellow, and blue items emitted by Publisher will be processed by the map() method synchronously. The return result… Read More
With RESTful API, you can use the OpenAPI Generator Maven plugin to generate source code and just add the implementation for APIs. With GraphQL, you can also do this using the GraphQL Maven plugin. How is it in detail? Let’s find out together in this… Read More
In the previous tutorial, I showed you how to use the Springfox library to create RESTful API documentation according to OpenAPI specification in Spring Boot applications. But Springfox has been out of date for a long time and the springdoc-openapi library is updated continuously and… Read More
In the previous tutorial, I showed you how to create a Maven Archetype for a normal Maven project. For Maven multi-module projects, how to create Maven Archetype? We will find out together in this article! As an example, I will take an example project of… Read More
OpenFeature is an open standard that makes it possible to implement the concept of feature flags, on or off features of an application. To use OpenFeature, we need to have a service running outside the application that acts as a provider so that we can… Read More
In the previous tutorial, I showed you how to add custom metrics using OpenTelemetry SDK metrics and I also used Logging exporter to log this metrics information to the console. In this tutorial, I will show you how to integrate Prometheus with OpenTelemetry using Prometheus… Read More
I introduced you to Clean Architecture and also showed you how to build a Spring Boot project following Clean Architecture. Realizing that initializing the Spring Boot project following Clean Architecture is quite a lot of stages, I built a Maven Archetype to make this simpler.… Read More
In the previous tutorial, I guided you through OpenTelemetry with the Logging exporter to log information about requests to the application. By default, we will see mainly information about tracers logged. To display more information about metrics, you can add additional code using the OpenTelemetry… Read More
In the article Implement OAuth Resource Server using Spring Security OAuth2 Resource Server, I showed you how to protect resources managed by Resource Server using an access token issued by Authorization Server. In the example of this article Implement OAuth Resource Server using Spring Security… Read More
OpenTelemetry is a set of tools, APIs, and SDKs that make it possible to generate, collect, and export information about running applications including metrics, logs, and traces. This information can then be imported into other tools to visualize, helping us to promptly grasp the problems… Read More
