Summary The question revolves around the release date of Single SPA versions compatible with Angular 19 and Angular 20 for developing new pages in a Single SPA project. Understanding the compatibility and release timeline is crucial for planning and executing the development of new pages. Root Cause The root cause of the inquiry is the … Read more
Production Postmortem: Service Outage Caused by Database Deadlock Summary A cascading database deadlock condition caused a critical API outage for our payment processing service during peak traffic. System downtime lasted 47 minutes with 100% failure rate on checkout requests with incorrect optimistic locking logic as the primary trigger. Root Cause Failure occurred due to: Non-sequential … Read more
Summary The issue at hand is understanding the meaning of std: in C++ and how it gets parsed when using namespace std; is enabled or disabled. This is crucial for namespace resolution and error handling in C++ programming. Root Cause The root cause of this issue lies in how C++ handles namespace resolution. When using … Read more
## Summary Integration with Google Calendar API led to duplicated calendars per user instead of creating a single shared calendar. The requirement was one system-owned calendar with **delegated write access** for administrators and **public read access** for all users. Misunderstanding Google Calendar’s ownership model caused redundant calendars. ## Root Cause Google Calendar API requires exactly … Read more
Summary The memberCreatorPostAnalytics endpoint is experiencing issues, resulting in ILLEGAL_ARGUMENT and RESOURCE_NOT_FOUND errors when using POST and GET methods, respectively. The error responses suggest that the API is either unable to resolve the request parameters or the resource is not available. Root Cause The root cause of this issue is likely due to: Incorrect request … Read more
Summary The WhatsApp Business Platform API endpoint for sending template messages returned a 200 OK response with message_status: “accepted” and a valid wamid. However, messages were undelivered, displaying an “Authentication Exception” in WhatsApp Manager. Crucially: The error occurred only for business-initiated messages (Marketing/Utility templates). Session messages (user-initiated conversations) succeeded. Access tokens, template approvals, and credentials … Read more
Summary A JavaScript developer encountered non-functional button click events within a Mapbox GL JS popup despite correct popup rendering. The issue arose from attempting to use inline event handlers (onclick) in popup HTML. This approach fails due to Mapbox GL JS’s shadow DOM implementation. Root Cause Inline event handlers are not executed due to Mapbox … Read more
Summary The problem revolves around configuring AppSheet to allow users to update a single field in a table that is linked to a read-only BigQuery view. The main goal is to enable users to edit a comment field in the detail view of an AppSheet app, where the comment is sourced from a separate, updateable … Read more
Summary This postmortem examines a formatting issue in a Python movie booking system where printing movie listings from a file resulted in unintended blank lines between entries. The root cause was unprocessed newline characters from file-reading operations compounded by Python’s native print behavior. Root Cause The primary cause of inappropriate line gaps was: Reading newline … Read more
Summary The issue at hand is navigating to a shared screen in a React Native app using Expo Router while preserving the currently active bottom tab. The current workaround involves creating “proxy” routes, which results in a large number of empty files and is not ideal. The goal is to find a recommended way to … Read more