Summary The problem at hand is making the changingcells line dynamic when using VBA to create new scenarios. Currently, the line can only be hardcoded, but the goal is to use a dynamic range, table reference, or array. Root Cause The root cause of this issue is the lack of a built-in VBA method to … Read more
Summary This postmortem analyzes a common Android Navigation Component failure: navigating from one included sub‑graph to another inside a single‑activity architecture. The issue appears when a LoginFragment inside nav_graph attempts to navigate to the start destination of main_nav_graph, but navigation silently fails. Root Cause The root cause is misunderstanding how included navigation graphs behave. Included … Read more
Summary This incident examines a common misconception in C++: whether objects removed from an STL container continue occupying memory and whether developers must manually free them. A std::list<structShell> was used, and elements were erased via remove_if. The concern was whether this causes memory leaks or lingering allocations. Root Cause The confusion stems from misunderstanding how … Read more
Summary A full‑height (100vh) container can unexpectedly hide its bottom border because the browser’s viewport height does not always equal the visible layout height. Mobile UI chrome, scrollbars, and fractional pixel rounding often push the bottom edge just outside the rendered area. Even with box-sizing: border-box, the border can fall below the fold. Root Cause … Read more
Summary When SUM() is applied to a varchar column, SQL Server attempts an implicit conversion to a numeric type. If the conversion succeeds, SQL performs a normal numeric sum; if it fails, SQL throws a conversion error. The surprising part is that many varchar values look numeric, so SQL silently converts them and returns a … Read more
Summary The issue arises when attempting to determine whether an ASP.NET WebForm URL is loaded in a WinForm App or a Browser. The provided EnvironmentHelper class fails to correctly identify the WinForm environment, leading to incorrect detection. Root Cause The root cause is the mismatch in execution contexts between ASP.NET WebForms and WinForms. The System.Web.HttpContext.Current … Read more
Summary When wrapping an async function in .NET, the key decision is whether to return the Task directly or await it. Returning the Task preserves the async nature, while awaiting it resolves the result immediately. The correct approach depends on whether you want to pass-through the async operation or control its execution. Root Cause The … Read more
Summary Cumulative Phonetic Alignment Drift in a CTC-based Quranic recitation correction system causes phantom errors and accuracy drops in long Ayahs (>20 words). The issue arises from imperfect word boundaries in CTC models and the complexities of connected speech (Wasl) in Quranic recitation. Root Cause CTC Model Limitations: Lack of precise word boundaries leads to … Read more
Summary This postmortem analyzes whether a Spring Boot PasswordEncoder should be reused globally or instantiated repeatedly. The short answer: yes, reuse it. Creating new instances offers no security benefit and introduces unnecessary overhead. Root Cause The confusion stems from misunderstanding how BCryptPasswordEncoder works and whether it maintains internal state. Developers often assume cryptographic components must … Read more
Summary A surge of automated clients was overwhelming the /api/books endpoint, causing NGINX to buffer massive upstream responses to disk and degrading performance. The bot‑blocking logic was incomplete, and the API returned payloads too large to serve efficiently under load. The result was excessive I/O, slow responses, and ineffective rate limiting. Root Cause The incident … Read more