https://joaovieira.ca/categories/software-engineering/ Recent content in Software Engineering on João Vieira (JV) https://joaovieira.ca/profile.jpeg https://joaovieira.ca/profile.jpeg Hugo en-us Sat, 08 Aug 2026 10:30:00 -0700 https://joaovieira.ca/spring-boot-4-upgrade/ Sat, 08 Aug 2026 08:30:00 -0700 https://joaovieira.ca/spring-boot-4-upgrade/ What made our Spring Boot 3.5 to 4.1 upgrade easier than the 2 to 3 one, including the AI-first knowledge base we built and shared across service teams. https://joaovieira.ca/mongodb-server-timeout/ Wed, 03 Jun 2026 22:30:00 -0800 https://joaovieira.ca/mongodb-server-timeout/ Discovered why a query ran for 14 hours on MongoDB server despite client timeout: missing server-side timeout configuration. Solutions for MongoClientSettings. https://joaovieira.ca/mongodb-observability-spring-data/ Thu, 07 May 2026 18:07:11 -0700 https://joaovieira.ca/mongodb-observability-spring-data/ How we improved MongoDB tracing spans in Spring Data by adding a custom command listener to surface query details while keeping sensitive values sanitized. https://joaovieira.ca/intellij-ai-chat-window-better-than-copilot-plugin/ Thu, 19 Mar 2026 19:00:00 -0700 https://joaovieira.ca/intellij-ai-chat-window-better-than-copilot-plugin/ After using both tools in daily work, I found the IntelliJ AI chat window flow more productive than the Copilot plugin. https://joaovieira.ca/jpa-delete-all-query-not-batching/ Thu, 22 Jan 2026 22:30:00 -0800 https://joaovieira.ca/jpa-delete-all-query-not-batching/ Discovered why JPA deleteAll wasn’t batching: @Version fields force entity loading for optimistic locking. The fix: explicit @Query annotation. https://joaovieira.ca/spring-boot-4-analysis/ Mon, 19 Jan 2026 19:00:00 -0800 https://joaovieira.ca/spring-boot-4-analysis/ A detailed analysis of the major changes in Spring Boot 4, including Jackson 3 migration, Java 17 baseline, and dependency updates. https://joaovieira.ca/spring-ai-webflux-observability/ Sat, 01 Nov 2025 12:30:24 -0900 https://joaovieira.ca/spring-ai-webflux-observability/ How I got observability working in my reactive Spring AI app using WebFlux, after hours debugging tracing and context propagation issues. https://joaovieira.ca/task-snacking/ Sat, 01 Feb 2025 08:35:24 -0800 https://joaovieira.ca/task-snacking/ Task snacking feels productive but can keep you from meaningful work. Stay aware, balance small tasks with big ones, and make sure progress truly matters https://joaovieira.ca/micrometer-tracing-spring-webflux-propagation/ Mon, 27 Jan 2025 17:15:24 -0800 https://joaovieira.ca/micrometer-tracing-spring-webflux-propagation/ Upgrading to Spring Boot 3.2 revealed tracing issues in a WebFlux service. A single line of code fixed broken span propagation and improved debugging. https://joaovieira.ca/enhance-gitlab-release-notes-automated-library-changelogs/ Mon, 16 Sep 2024 20:00:05 -0700 https://joaovieira.ca/enhance-gitlab-release-notes-automated-library-changelogs/ Learn how to automate GitLab library changelogs for streamlined release notes, improving efficiency and consistency in your development workflow https://joaovieira.ca/spring-boot-upgrade-key-takeaways/ Tue, 27 Aug 2024 20:55:24 -0700 https://joaovieira.ca/spring-boot-upgrade-key-takeaways/ Learn key insights from upgrading Spring Boot from 2.7 to 3.2. Discover practical tips, challenges faced, and best practices for a smooth transition https://joaovieira.ca/spring-batch-5-migration-params-table/ Mon, 19 Aug 2024 20:08:24 -0700 https://joaovieira.ca/spring-batch-5-migration-params-table/ From Spring Batch 4 to 5 there were changes in the rows on BATCH_JOB_EXECUTION_PARAMS we show an approach that makes the migration easy and backward-compatible https://joaovieira.ca/spring-boot-3-tracing-sampling-default-probability/ Wed, 17 Jul 2024 08:44:24 -0700 https://joaovieira.ca/spring-boot-3-tracing-sampling-default-probability/ After upgrading Spring Boot version to 3.3.1 we notice that 90% of our distributed tracing in our observability tool were gone. In this post we tell the story https://joaovieira.ca/spring-boot-3-3-1-jackson-jdk8module/ Mon, 15 Jul 2024 21:23:24 -0700 https://joaovieira.ca/spring-boot-3-3-1-jackson-jdk8module/ After upgrading Spring Boot from version 3.2.5 to 3.3.1 we started to have a serialization issue with the Optional class. Check how to fix it in this post https://joaovieira.ca/migration-netflix-zuul-to-spring-cloud-gateway-server-mvc/ Thu, 27 Jun 2024 20:55:24 -0700 https://joaovieira.ca/migration-netflix-zuul-to-spring-cloud-gateway-server-mvc/ I have recently migrated our API gateway from Spring Cloud Starter Netflix Zuul to Spring Cloud Gateway Server MVC and here is a complete guide on how to do it https://joaovieira.ca/spring-boot-3-migration/ Sat, 27 Apr 2024 08:55:24 -0700 https://joaovieira.ca/spring-boot-3-migration/ I have recently migrated several projects and libraries from Spring Boot 2.7.15 to Spring Boot 3.2.4 and I would like to share some insights into the changes https://joaovieira.ca/spring-boot-3-spring-sleuth-micrometer-migration/ Thu, 11 Apr 2024 20:55:24 -0700 https://joaovieira.ca/spring-boot-3-spring-sleuth-micrometer-migration/ Spring Sleuth was removed in Spring Boot version 3 in favor of Micrometer and I recently migrated many services and want to share the learnings with you. https://joaovieira.ca/spring-security-resource-server-jwt/ Mon, 01 Apr 2024 19:08:24 -0700 https://joaovieira.ca/spring-security-resource-server-jwt/ We recently replaced the deprecated @EnableResourceServer with Spring Security and in this post I will share what we did and the new code. https://joaovieira.ca/root-cause-simpler-than-appear/ Sat, 03 Feb 2024 11:25:37 -0700 https://joaovieira.ca/root-cause-simpler-than-appear/ We are smart engineers and sometimes when we face a problem we may tend to think the root cause is very complex, but usually, they are simpler than they appear https://joaovieira.ca/rabbitmq-dlq-poisonous-message/ Mon, 18 Dec 2023 19:20:50 -0700 https://joaovieira.ca/rabbitmq-dlq-poisonous-message/ Poisonous message handling is very important in the Dead Letter Queue (DLQ) and this post we will show what happen when we do not take that into account https://joaovieira.ca/dependabot-benefits/ Sat, 04 Nov 2023 10:15:11 -0700 https://joaovieira.ca/dependabot-benefits/ Keeping project dependencies up to date is always a challenge. Fortunately, Dependabot can help with that. https://joaovieira.ca/software-engineer-philosophy/ Wed, 13 Sep 2023 19:05:37 -0700 https://joaovieira.ca/software-engineer-philosophy/ This document is a set of principles that are part of my software engineering philosophy https://joaovieira.ca/insights-from-mentorship-key-learnings/ Mon, 14 Aug 2023 10:22:27 -0700 https://joaovieira.ca/insights-from-mentorship-key-learnings/ The mentorship with Aleksey provided an invaluable opportunity to learn from his extensive experience and gain insights into his approach to work https://joaovieira.ca/rabbitmq-prefetch-count/ Sat, 24 Jun 2023 08:57:50 -0700 https://joaovieira.ca/rabbitmq-prefetch-count/ Prefetch count is a very important parameter that we have when configuring consumers in RabbitMQ, this real-case scenario shows an example of this https://joaovieira.ca/rabbitmq-quorum-queues/ Tue, 02 May 2023 19:15:50 -0700 https://joaovieira.ca/rabbitmq-quorum-queues/ Classic queues are deprecated and are going to be replaced by Quorum queues, which are durable, replicated FIFO queues build with data safety as a top priority https://joaovieira.ca/observability-basics/ Sat, 21 Jan 2023 10:59:18 -0800 https://joaovieira.ca/observability-basics/ Learn what is Observability and the basic signals that allows system to be observable https://joaovieira.ca/cache-overview/ Mon, 07 Nov 2022 20:25:46 -0800 https://joaovieira.ca/cache-overview/ Caching frequently used information is a very good approach to speed up your microservice. In this post we show a brief overview about caching https://joaovieira.ca/platform-team/ Wed, 26 Oct 2022 19:25:37 -0700 https://joaovieira.ca/platform-team/ Our main goal as the platform team is to help improve the developer experience and help the company to deliver more https://joaovieira.ca/postgresql-gin-index-long-queries/ Sat, 10 Sep 2022 12:00:05 -0700 https://joaovieira.ca/postgresql-gin-index-long-queries/ We were seeing random queries taking as much a 35 seconds on our Postgres DB. The cause was GIN index feature that you have to get to know https://joaovieira.ca/rabbitmq-high-availability/ Sat, 04 Jun 2022 09:07:50 -0700 https://joaovieira.ca/rabbitmq-high-availability/ When taking RabbitMQ to production, one of the main concerns is how to have high availability of the queues and exchanges https://joaovieira.ca/interview-preparation-guide-software-engineering/ Tue, 17 May 2022 19:20:51 -0700 https://joaovieira.ca/interview-preparation-guide-software-engineering/ I have compiled the list of resources and questions that will help prepare for the interview and in the process of looking for a Software Engineering Job https://joaovieira.ca/choosing-service-level-objectives-slo/ Wed, 04 May 2022 20:20:26 -0700 https://joaovieira.ca/choosing-service-level-objectives-slo/ Learn with the mistakes and experience of the Google’s team how to choose the Service Level Objectives (SLOs) for your services https://joaovieira.ca/pact-contract-testing-flow-ci-pipeline/ Mon, 18 Apr 2022 19:08:24 -0700 https://joaovieira.ca/pact-contract-testing-flow-ci-pipeline/ Check out how is the Pact Contract Testing flow in a CI pipeline in both feature branches and also master branches and how to safely deploy your services https://joaovieira.ca/pact-contract-testing/ Sat, 19 Feb 2022 11:07:02 -0300 https://joaovieira.ca/pact-contract-testing/ Pact is a consumer-driven testing tool that helps with contract tests. In this post, we explore more about Pact and how it works and check out a sample code https://joaovieira.ca/contract-testing/ Sun, 06 Feb 2022 18:02:26 -0300 https://joaovieira.ca/contract-testing/ Contract testing bring more confidence and less anxiety for the whole engineering team. It also helps in the documentation of the code and communication https://joaovieira.ca/what-makes-bad-code-smell-bad/ Sat, 29 Jan 2022 09:15:11 -0300 https://joaovieira.ca/what-makes-bad-code-smell-bad/ We know that code smells are bad. But what is it that makes bad code smell so bad? In this post, I will list 4 main reasons for a code to smell bad. https://joaovieira.ca/clean-code/ Sat, 22 Jan 2022 19:41:57 -0300 https://joaovieira.ca/clean-code/ Clean code is elegant, efficient, simple, and written with care. It’s about writing code that’s easy for humans to understand, not just for computers to execute https://joaovieira.ca/blog-stack/ Sat, 08 Jan 2022 10:08:08 -0300 https://joaovieira.ca/blog-stack/ Learn why I chose a static blog powered by Hugo, the pros and cons of static vs dynamic blogs, and how I’m hosting it for free