personal, startup7 years at Playtomic.ioThis year I haven’t written much. Time flew by; I blinked a few times, and suddenly, a whole year had passed. I’ve added only 2 posts to…
personal, startupThis is Playtomic's AnemoneWe, tech companies, don’t share a lot about our internals. But I think we should share more often, especially if we are proud of what we…
spring, undertowHow to add a listener port to Undertow in Spring BootSuper short post today. I couldn’t believe none has tried this before. We wanted to add a management port to separate traffic and…
personal, startup6 years at Playtomic.ioI started this post 6 months ago but never finished it. Today, I make 6 years in Playtomic. Everything goes so fast that it feels like…
docker, kubernetes, awsHow to migrate a cluster in productionOne of the most complex operations in tech is upgrades or migrations without disrupting the service. I always compare it to upgrading a…
mongodb, optimizationDenormalizing the core of PlaytomicYes, another post about optimization and MongoDB. I started this post in July, and I couldn’t find the time to finish this. I was optimizing…
mongodb, vpc, vpnHow to peer two VPCs and access it using a VPNAlthough I have some experience, I am not a sysadmin. So this might be obvious for a sysadmin or someone with an AWS certification but not…
ci+cd, github actions, dockerDockerized Multi-arch Github Actions RunnerDo you want to run the Github Action runner as a container? Do you want to run it on your Docker or Kubernetes cluster and scale the number…
ci+cd, github actions, jenkinsModernizing a CI+CD pipeline with Github ActionsOur CI+CD has been working for 5 years long. You know, if it ain’t broken, don’t fix it. But the company is not the same. It’s time to…
mongodbPerformance and MongoDBIf you, a backend developer, had to describe your job, what would you say? We usually talk a lot about servers, clusters, layers, algorithms…
githubFlux vs ArgoCDI have been trying to find any comparison between FluxCD and ArgoCD that could help me choose between them. I haven’t found any that truly…
githubMy evolution in Playtomic in Github chartsI sometimes take a peek at the Github charts, I find interesting what they speak about. I have never looked thoroughly at the activity…
sreThe path to observabilityo11y = observability = logs, metrics, traces This post is a summary of the steps we unconsciously followed in Playtomic when digging into…
javaMoney operations are not as easy as you thinkI see this a lot in Stackoverflow and most of the replies always makes me wonder what kind of software is running over there. People ask…
logging, how-toDon't use default values in your databaseThis is a bad practice in my opinion if your database is owned by one application (or service). It is the usual scenario when using…
logging, how-toChanging the log format in Spring BootDo you know that hours of trial and error can save you minutes of reading documentation? Well, that was not the case today because I wasn’t…
rust, how-toOptional dependencies in RustYes, I’m learning a new language. A typed one =D I love C++. Some of my best code and all my research was done in C++. But I hate its…
machine learning, artTeaching a computer to drawThere must be hundreds of artists trying to mix art and computing. I have always wanted to try to perform some experiments on this topic. It…
github, personalWhat I see in Github contributionsI have seen several people sharing their contribution graph in Github. Some of them, bragging about how dark and green their graph is. A few…
cloud, gamingCloud gamingThis is not a technical entry, but I still think it is worth to be written. I used to be a hardcore gamer. Hundreds of titles, thousands (I…
documentationChoosing a documentation systemDocumentation is always the victim when developing a system. We will do it tomorrow. And tomorrow… I’m writing this because we had a deep…
java, test, timeA way of testing code based on time in a Spring Boot ApplicationEvery time I see a I tremble. How do you expect to test that in a simple / coherent / easy to follow way? When I see that code, I usually…
spring, kafka, concurrency, streamConcurrency in Spring's StreamListener and KafkaAnother too fast, too furious post. I have spent a few hours trying to make my event processor multi-threaded, and it’s so damn easy that I…
java, threadingBlockingQueue and ExecutorServiceThis is a quick and dirty post, but I promised I would publish everything I research at Playtomic. Last week, we were having a discussion…
learningAmazed by the SoyuzI never thought that one of the things that would impress me the most when visiting New York City, would be seeing a Russian Soyuz. It was…
security, startup, spring, microservicesA way to unify two authorization methods - Part ITime to talk about security today. Security is one of the most important aspects of a system, and probably one of the most boring to…
personal, microservicesWhat I have learned from building microservicesContinuous Integration + Continuous Deployment. Repeat with me: there is no agile without CI+CD. Continuous deployments get you to the next…
personal, startup2 years at Playtomic.ioLast February I made 2 years in Playtomic. Everything goes so fast that it feels like 2 decades. It goes so fast that I started to write…
spring, mongodb, tech, pillsHow to mix Spring Data queries and MongoDB syntaxI love writing queries using Spring Data’s Criteria. Writing queries directly in SQL (@NativeQuery, @Query) feels a bit dirty. And I also…
techPlaytomic's PipelineYour continuous integration (CI) pipeline is one of the most important pieces of software you can have in your business: it runs every time…
