Under The Tutorials Umbrella

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Containers

Docker + Spring Boot

CQRS

Guide
Axon 4 implementation using SpringBoot and Mongo

DevOps + Cloud

Github Actions
AWS EC2
AWS BeanStalk

Event Streaming / Message Queue

Spring Kafka

GO

Hello World

GraphQL

Implementation and Guide

gRPC

Implementation and Guide

Java

java.util.concurrent — Part 1
java.util.concurrent — Part 2
Instrumentation
Features from 1.8 to 17

Network & Communication

HTTP 3
HTTP Calls
Hotspots

Reactive Programming

RxJava

Spring Cloud — Series

Spring Cloud Circuit Breaker- Sentinel
Spring Cloud Circuit Breaker- Resilience4j
Spring Cloud Netflix- Eureka
Spring Cloud Sleuth- Sleuth
Spring Cloud OpenFeign- Feign
Spring Cloud Gateway- gateway+loadbalancer
Spring Cloud Config- External Configuration

SaaS

Tweet Scheduler built using SprintBoot & Mongo, Deployed to AWS

System Design + Architecture

Hexagonal Architecture
REST Architecture