João Esperancinha

I'm a software engineer with 10+ years of experience mosty in Java. I'm an OCP11, Spring Professional 2020 and I am a Kong Champion. I am the owner of channel JESPROTECH on YouTube.

Nieuwegein Joined on Sep 19, 2017 http://joaofilipesabinoesperancinha.nl/

Education

ISEL Lisboa

Pronouns

He/Him

Work

Software Engineer

João Esperancinha

Dec 29 '24

Implementing a Geo Location module using the Haversine formula

#python #haversine #coding #distance

14 min read

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João Esperancinha

Dec 29 '24

Making reactive applications with a Kitten Care Example

#reactive #webflux #kotlin #java

38 min read

João Esperancinha

Dec 29 '24

How to make the best of a slow machine running on limited resources with a Windows environment as a Java Engineer

#windows #java #kotlin #sdk

7 min read

João Esperancinha

Dec 28 '24

Redis Cache - A String story

#redis #string #kotlin #cache

5 min read

João Esperancinha

Dec 28 '24

Pub-sub Redis in Micronaut

#micronaut #redis #pubsub #kotlin

4 min read

João Esperancinha

Dec 28 '24

How to Manage Your APIs Across Multi-Cloud Environments

12 min read

João Esperancinha

Dec 28 '24

ISBN Stacks — A look at a possible Spring Application implementation without annotations

#kofu #spring #kotlin #ktor

19 min read

João Esperancinha

Dec 27 '24

City Library — An advanced guide to Circuit Breakers in Kotlin

#kotlin #circuitbreakers #java #advanced

17 min read

João Esperancinha

Dec 27 '24

Monitoring Secure Coroutines and WebFlux Reactive applications with Prometheus, Grafana, and InfluxDB — A webcams example

38 min read

João Esperancinha

Dec 27 '24

Learning JWT security using KumuluzEE — The finances of a league of the environment

#kumuluzee #kotlin #java #jwt

33 min read

João Esperancinha

Dec 27 '24

Kotlin Coroutines vs Java Virtual Threads — A good story, but just that…

44 min read

João Esperancinha

Dec 27 '24

Kotlin Native and GraalVM - The Story So Far

#graalvm #kotlin #java #native

32 min read

João Esperancinha

Dec 27 '24

Protecting Applications with Kong security plugins and using StatsD to monitor system states — A healthy camera story

#kong #security #plugins #kotlin

39 min read

João Esperancinha

Dec 27 '24

Configurable Kong API Gateway with Micronaut Services in Kotlin — A very odd Yucca tribute concert

#opensource #kong #gateway #kotlin

32 min read

João Esperancinha

Dec 26 '24

Learning AWS with Localstack and Reactive Kotlin — A stamps and coins implementation

#was #reactive #localstack #kotlin

27 min read

João Esperancinha

Dec 26 '24

Coroutines, Distributed Cache, Resilience, and Replication in Kotlin — Making a VMA’s application

#coroutines #kotlin #resilience #hazelcast

24 min read

João Esperancinha

Dec 26 '24

From Paris to Berlin — Creating Circuit-Breakers in Kotlin

#circuitbreakers #kotlin #pattern #resillience4j

20 min read

João Esperancinha

Dec 25 '24

NewsCast — Using Sagas with Choreography and Orchestration Patterns — Kotlin example

#sagas #eventuate #pattern #kotlin

13 min read

João Esperancinha

Dec 25 '24

The streaming bridges — A Kafka, RabbitMQ, MQTT and CoAP example

#streams #kafka #kotlin #bridges

33 min read

João Esperancinha

Dec 25 '24

Chrome OS Guide to go from Zero to DevOps Hero in a nutshell

#chrome #os #linux #crostini

9 min read

João Esperancinha

Dec 25 '24

Deploying Mancala with Minikube — A beginners guide

#minkube #architecture #docker #images

20 min read

João Esperancinha

Dec 25 '24

Comparing WebFlux and Spring MVC with JMeter and Kotlin

#webfux #mvc #spring #kotlin

18 min read

João Esperancinha

Dec 25 '24

Reactive Programming applied to Legacy Services — A WebFlux example

#spring #webflux #reactive #kotlin

32 min read

João Esperancinha

Dec 25 '24

CQRS — Command Query Responsibility Segregation — A Java, Spring, SpringBoot, and Axon Example

#cqrs #kotlin #architecture #patterns

12 min read

João Esperancinha

Dec 25 '24

Hexagonal Architecture — A Favorite Lyrics Spring Boot — Java Example

#spring #springboot #pivotal #hexagonal

13 min read

João Esperancinha

Apr 26 '24

Decoding Kotlin - Your guide to solving the mysterious in Kotlin

#kotlin #nullsafety #annotations #spring

31 min read

João Esperancinha

Apr 12 '24

Kuma Meshes Head-On - A beginners guide

#kuma #kong #kumamesh #kongmesh

22 min read

João Esperancinha

Mar 21 '24

They said to use the Default Dispatchers but I found out it was Unconfined

#kotlin #unconfined #dispatchers #quizzes

10 min read

João Esperancinha

Mar 21 '24

What is the Purpose of the Main Dispatcher?

#kotlin #coroutine #dispatchers #dispatchersmain

4 min read

João Esperancinha

Mar 19 '24

When thinking about Java fields we use-site target in Kotlin

#kotlin #java #dataclasses #javarecords

7 min read

João Esperancinha

Mar 17 '24

Why the Global Scope isn't advised to be used?

#kotlin #coroutines #concurrency #globalscope

3 min read

João Esperancinha

Mar 17 '24

How does concurrency play a role in coroutines?

#kotlin #coroutines #tasking #multitasking

3 min read