🛠️ 2025-10-21 Tech Update Summary

🔹 Kubernetes - 7 Common Kubernetes Pitfalls (and How I Learned to Avoid Them)

The blog post titled “7 Common Kubernetes Pitfalls (and How I Learned to Avoid Them)” discusses common mistakes encountered when working with Kubernetes, a container orchestration platform. The author shares personal experiences and provides insights on how to avoid these pitfalls, which include:

  1. Skipping Resource Requests and Limits: Not specifying CPU and memory demands can lead to resource starvation or hoarding. It’s recommended to start with modest requests and adjust based on real-world usage.

  2. Underestimating Liveness and Readiness Probes: Properly configuring these probes is crucial for ensuring that containers are healthy and ready to serve traffic.

  3. Relying Solely on Container Logs: Depending only on kubectl logs can be problematic. Instead, centralize logs using tools like Fluentd or Fluent Bit.

  4. Treating Dev and Prod the Same: Different environments require customized configurations. Use tools like Kustomize to manage environment-specific settings.

  5. Leaving Old Resources Active: Unused resources can waste resources and create confusion. Regular audits and labeling can help manage this.

  6. Diving Too Deep into Networking Too Soon: It’s important to understand Kubernetes’ native networking before implementing advanced solutions like service meshes.

  7. Neglecting Security and RBAC: Secure configurations and role-based access control (RBAC) are essential to prevent security breaches.

The author encourages readers to learn from mistakes, utilize official documentation, and engage with the Kubernetes community. 👉 Read more

🔹 Spring Boot - Spring Security 2025-10 Releases

The blog post announces the release of Spring Security versions 7.0.0-RC1, 6.4.12, and 6.5.6. Key features of version 7.0.0-RC1 include enhanced multi-factor authentication (MFA) support, the ability to provide credentials within a specified recency, support for Jackson 3, and the OAuth 2.0 Dynamic Client Registration Protocol. For detailed changes, the post provides links to the changelogs of each version. Additionally, the post includes links to the project’s page, GitHub repository, issue tracker, and documentation. 👉 Read more

🔹 Docker - Docker Model Runner Meets Open WebUI: A Simpler Way to Run Local AI Models

The blog post discusses a new extension created by Sergei Shitikov, a Docker Captain and Lead Software Engineer, to simplify the process of running local AI models. The extension combines Docker Model Runner with Open WebUI, making it accessible for users without a technical background to get started with local Large Language Models (LLMs). This integration aims to enhance the developer experience and foster the use of open source and local AI tools. 👉 Read more

🔹 Java - Performance Improvements in JDK 25

The blog post discusses the performance enhancements introduced in JDK 25, emphasizing Java’s ongoing evolution towards better efficiency. Key improvements in this version include the introduction of scoped values, enhancements to garbage collectors, various compiler optimizations, and additional updates that collectively contribute to better performance compared to previous Java versions. 👉 Read more

🔹 Golang - Flight Recorder in Go 1.25

The blog post discusses the introduction of a new diagnostic tool called “flight recording” in Go version 1.25. This tool is designed to help developers capture and analyze detailed runtime information about their Go applications. It aims to enhance debugging and performance optimization by recording data that can be reviewed after an issue occurs. The post likely covers how this feature works, its benefits, and how it can be utilized within the Go programming environment. 👉 Read more

🔹 Helm - Helm Turns 10

The tech blog post titled “Helm Turns 10” celebrates the tenth anniversary of Helm, a tool for managing Kubernetes applications. It mentions that Helm was created during a hackathon shortly after the release of Kubernetes 1.1.0. The initial commit for Helm was made by Matt Butcher on October 19, 2015, and is available in the helm-classic Git repository. This original version of Helm existed before it merged with Deployment Manager and became part of the Kubernetes project. The post includes a link to the full article on the Helm website. 👉 Read more