Summary The current setup for the FastAPI application, which serves as a core engine for a derivative trading and quant operations system, uses a relational database (e.g., PostgreSQL or MySQL) with SQLAlchemy for ORM and DB access. The application utilizes session-based DB interaction per request and has logging enabled for queries and application events. The … Read more
Summary The Hazelcast configuration for Hibernate L2 cache, application cache, and topic publish/subscribe messaging is a complex setup that requires careful consideration of cluster configuration, network settings, and cache management. In this post, we will discuss the root cause of common issues that arise in such a setup and provide guidance on how to fix … Read more
Summary The goal is to customize Multi-Factor Authentication (MFA) in Spring Security 7 to differentiate between authentication methods. When a user logs in with an OIDC provider like Google or Facebook, they should be granted access directly. However, when a user chooses to log in using username and password authentication, they must also verify their … Read more
Summary The issue at hand is the inability to fill the background of a ggplot plot with a multicolor linear gradient. Despite trying different computers with varying graphics capabilities, the desired outcome cannot be achieved. The warning in the help for linearGradient suggests that it may not be supported on all graphics devices, but this … Read more
Summary The issue at hand involves the failure of a Windows MSU patch installation at 94% during the post-restart phase, with the system displaying “Undoing Changes” and no apparent errors in the CBS logs. Key symptoms include: Failure to install MSU patches using WUSA on Windows 10 Installation reaches 94% after restart and then fails … Read more
Summary Creating a family tree website requires a well-structured data model to efficiently store and retrieve relationships between individuals. The key to this project is selecting the right data structure and storage method. Given the small size of the project, a simple yet effective approach can be implemented using a combination of graph data structures … Read more
Summary The issue at hand is with an ASP.NET MVC application that uses Windows Authentication to retrieve the current logged-in user’s username. The application works as expected when run locally in Visual Studio using localhost, but after publishing, the username is returned as empty. This problem occurs despite Windows authentication being enabled and anonymous authentication … Read more
Summary The issue at hand is creating a smooth animation for a hand-made horizontal carousel component in React when clicking the chevron images to slide the carousel. The current implementation lacks this animation, resulting in an abrupt change when navigating through the carousel items. Root Cause The root cause of this issue is the lack … Read more
Summary The problem revolves around authenticating network requests made by an ILMessageFilterExtension using a user-specific JWT token generated after a successful login in the main app. The goal is to understand how to integrate SecAddSharedWebCredential with the message filter service to authenticate these requests. Root Cause The root cause of the issue lies in the … Read more
Summary The goal is to use MSAL (Microsoft Authentication Library) to obtain an OAuth2/OIDC token for a user-managed identity (B) in a different tenant (T2) than the calling workload (T1), which has its own user-managed identity (A). The token will be used to authenticate with the Azure DevOps REST API. Root Cause The main challenge … Read more