Overview Recently, I upgraded keycloak from 17 to 26. The update was swift. Keycloak did all the database migration. However, after the upgrade, the site broke. I set up keycloak behind a Caddy proxy. I hope this helps saving you some hours. Caddy’s config Keycloak’s config You may struggled with issues with mixed content, the … Read more
Concepts Here are the important concepts in the first section of CISSP Abstraction: Simplifying security by grouping similar elements into classes or roles and assigning security controls collectively. Accounting (Accountability): Review log files to check for compliance and violations to hold subjects responsible for their actions, especially policy violations. Acquisition: Obtaining hardware, software, and services, … Read more
Overview When it comes to data integrity, the famous example that people usually mention is the bank transfer scenario: Alice sends money to Bob, and Bob sends money to Alice. I also read that using @Transactional is the solution for such cases. However, is using @Transactional annotation enough to make Alice and Bob happy? Let’s … Read more
Overview So in my recent project, I need to manage video uploads and I think having a default placeholder for videos is quite boring. The right way would be having thumbnails for the videos. It’s quite simple to create a thumbnail from a video with java. There are a few choices when it comes to … Read more
Overview If you are working on swing desktop app, MigLayout is a great library to help you layout your app quickly. MiGLayout revolves around flexibility and simplicity while offering powerful features for fine-grained layout control. Here are the main concepts to understand when working with MiGLayout. 1. Components and Cells 2. Layout Constraints Here are … Read more
Overview Pattern matching is one of the most powerful features introduced in the recent versions of java. It helps us remove the redundant type casting. In this post, I will cover the key aspects of pattern matching with examples. Let’s get started. What is pattern matching? When talking about pattern matching in java, the first … Read more