Continuous improvement

Kubernetes has revolutionized the way we deploy and manage applications in modern cloud environments. As applications become more complex, managing their deployments can become a challenging task. To address this, the Kubernetes Operator pattern emerges as a powerful solution. In this blog post, we'll explore the benefits of using the Operator pattern and how it simplifies and enhances the deployment process. Blog post: https://www.victorleungtw.com/2023/07/20/operator/

In today's digital world, ensuring the security and integrity of online communications is of paramount importance. One of the key technologies that guarantee secure connections is SSL (Secure Sockets Layer) certificates. SSL certificates are small data files that bind cryptographic keys to an organization's details, allowing secure connections between a web server and a browser. In this blog post, we will delve into the different types of SSL certificate files, namely .pem, .crt, .p12, and .key, and explore their significance in securing online communications. Blog post: https://www.victorleungtw.com/2023/07/15/cert/

In the realm of network security, the importance of secure communication protocols cannot be overstated. Transport Layer Security (TLS) has long been a cornerstone for securing data transmitted over networks, especially the internet. However, as cyber threats evolve and become more sophisticated, traditional TLS alone may not provide sufficient protection. This is where Mutual Transport Layer Security (mTLS) steps in to provide an additional layer of security. In this blog post, we will explore what mTLS is, how it works, and the benefits it brings to the table. Blog post: https://www.victorleungtw.com/2023/07/09/mtls/

As organizations adopt containerization and orchestration technologies like Kubernetes, managing secrets and authentication becomes a critical aspect of their infrastructure. HashiCorp Vault, a popular secrets management solution, provides robust authentication mechanisms to ensure secure access to sensitive data. One such authentication method is the HashiCorp Vault Kubernetes Auth Method, which leverages Kubernetes Service Account Tokens for authentication. In this blog post, we will explore the features and benefits of this authentication method and how it simplifies the integration of HashiCorp Vault into Kubernetes environments. Blog post: https://www.victorleungtw.com/2023/07/08/vault/

In any organization, concerns about team members raising potential problems and becoming solely responsible for finding solutions can lead to a culture of dependency and hinder growth. Conversely, it is essential to encourage team members to think critically and take ownership of the challenges they encounter. In this blog post, we will address these concerns and explore ways to shape a culture of collaboration and responsibility within a team. Blog post: https://www.victorleungtw.com/2023/07/02/ownership/

In the world of text editors, few have garnered as much devotion and admiration as Vim. Vim, short for "Vi Improved," is a versatile and highly customizable text editor renowned for its speed, efficiency, and extensive functionality. Whether you're a developer, writer, or sysadmin, Vim offers a plethora of features and a unique editing philosophy that can dramatically enhance your productivity. In this blog post, we'll explore why Vim has stood the test of time and why it continues to be a popular choice among professionals and enthusiasts alike. Blog post: https://www.victorleungtw.com/2023/06/30/vim/

I am currently in a project, trying to deploy software solution in the environment with too much security. It is a pretty painful experience. In today's digital age, security is a paramount concern for software developers and users alike. With cyber threats becoming increasingly sophisticated, it is natural for developers to focus on fortifying their applications against potential vulnerabilities. However, there is a fine line between adequate security measures and an excessive obsession with protection. In this blog post, we will explore the dangers of overemphasizing security in software development and the potential negative consequences it can have on the development process and user experience. Blog post: https://www.victorleungtw.com/2023/06/29/security/

In today's data-driven world, efficient management of databases is crucial for maintaining the performance and scalability of applications. One technique that has gained significant popularity in recent years is database pooling. Database pooling allows for the reuse and efficient management of database connections, resulting in improved performance, reduced overhead, and enhanced scalability. In this blog post, we will explore the concept of database pooling, its benefits, and its implementation considerations.
Blog post: https://www.victorleungtw.com/2023/06/28/dbpool/

I am currently in a business trip in Melbourne for a few weeks. Nestled on the southeastern coast of Australia, Melbourne stands as a captivating city that effortlessly blends history, art, culture, and culinary delights. With its diverse neighborhoods, iconic landmarks, and a bustling arts scene, Melbourne offers travelers an unforgettable experience. Whether you're a foodie, an art enthusiast, or a nature lover, this vibrant metropolis has something to offer everyone. Join us as we embark on a virtual journey through Melbourne, unearthing its hidden gems and iconic attractions.
Blog post: https://www.victorleungtw.com/2023/06/27/melbourne/

Kubernetes has become the de facto standard for container orchestration and management in modern cloud-native environments. As organizations adopt Kubernetes, ensuring proper security and access control becomes paramount. Role-Based Access Control (RBAC) is a powerful mechanism provided by Kubernetes to define and manage permissions within a cluster. In this blog post, we will explore RBAC in Kubernetes, with a focus on ClusterRole and ClusterRoleBinding, two fundamental components for controlling access at the cluster level. Blog post: https://www.victorleungtw.com/2023/06/26/rbac/