GraphQL Basics — Scalar Types Int Float String Boolean ID (Unique value serialized as String) Non-nullable fields are marked with !. Collection Types [Int]: List<Integer> Special Types Query: Get Mutation: Post, Put, Delete, Patch Subscription: SSE, WebSockets Enum Enums don’t always have to be mapped to Java Enum. They could be mapped to Java Strings as well. enum Brand {…

Chat Completions API is described as follows (link): Chat models take a list of messages as input and return a model-generated message as output. Although the chat format is designed to make multi-turn conversations easy, it’s just as useful for single-turn tasks without any conversation. There are libraries available to…

This article covers how to configure WireMock and MockWebServer for a Spring WebFlux application to stub for any external APIs the application might need. Implementation Currently, WebClient is used for calling the external APIs. @Configuration public class HttpProxyConfiguration { @Value("${tracker.url}") private String trackerUrl…

Here is the motivation on why a new source set was added: Have a source directory to differentiate from unit tests and integration tests. Have an ability to run unit tests and integration tests at different stages as we focus highly on unit tests when working on a feature. …

I had a requirement to fetch user data from an external system. It was implemented using WebClient as part of declarative http client. Interestingly, the very first request after opening the application on a new browser tab returned Connection reset by peer error. This issue was solved by disabling keep-alive…

Introduction When I first learned about spring-cloud-openfeign, I found it very appealing. Because it supported some annotations from spring-mvc, it was easy to learn. In addition to that, one application can make HTTP calls with minimal efforts: which is to add a dependency, create a Java interface, and annotate appropriately. …

Once I was given with the following acceptance criteria: Do not show vertical scroll bar within the textarea Height of the text area should only resize depending on the input value Textarea has a minimum height Implementation import { useEffect, useRef, useState } from "react"; import "./styles.css"; export default function App() {…

Embedded H2 database is an excellent stepping stone for writing test code against repository module when starting a new project. In Spring Boot, with @DataJpaTest, I don’t have to worry about the connection information and Data Definition Language (DDL) because it will scan your entities and create tables for you. …

1 Kafka Broker Setup version: '3' services: zookeeper: image: confluentinc/cp-zookeeper:latest container_name: zookeeper environment: ZOOKEEPER_CLIENT_PORT: 2181 ZOOKEEPER_TICK_TIME: 2000 ports: - "2181:2181" schema-registry: image: confluentinc/cp-schema-registry:latest…