Summary This incident involved a scroll‑triggered class toggle that never fired, preventing a full‑screen hero image from transitioning into a smaller, side‑aligned layout. The failure stemmed from missing JavaScript event handling, incorrect element positioning, and CSS rules that prevented the intended transformation from ever being observable. Root Cause The root cause was that no functional … Read more
Summary This incident analyzes a misinterpretation of how multi‑tenant Postgres RLS and connection management work in a NestJS + TypeORM SaaS architecture. The core confusion: believing that each user session requires its own database connection, leading to fears of millions of connections. The real issue is not RLS itself, but incorrect scoping of the Postgres … Read more
Summary The KendoReact Data Grid integration with OData APIs failed due to an inability to pass Bearer token authentication headers using the useODataDataSource hook. The issue stemmed from incorrect documentation and misuse of the transport configuration object. Root Cause Incorrect Documentation: The official KendoReact docs lacked clear guidance on passing custom headers for OData requests. … Read more
Summary This incident involved a Unity Android build crashing immediately after the splash screen on subsequent launches. The crash only resolved temporarily when the app cache was cleared, and on some devices it never recovered. The logcat trace pointed directly into Mono’s Boehm garbage collector (libmonobdwgc-2.0.so), indicating a memory corruption or invalid GC state triggered … Read more
Summary A request to the /a/consumer/api/v0/oidc/token endpoint failed with an invalid_grant error. This indicates that the authorization code exchange was rejected by the OpenID Connect provider because one or more parameters in the token request were invalid, expired, mismatched, or previously used. Root Cause The invalid_grant error almost always means the OIDC provider refused the … Read more
Summary This postmortem analyzes a common API‑design failure: misusing the “Async” suffix when naming functions. The confusion stems from mixing up asynchronous execution, non‑blocking behavior, and coroutines that yield. When these concepts are blurred, developers ship APIs that mislead callers, cause misuse, and create long‑term maintenance pain. Root Cause The core issue is treating “Async” … Read more
Summary A misconfigured WordPress installation on XAMPP triggered a PHP fatal error: the constant DB_NAME was not recognized. This happened because the wp-config.php file used invalid quotation marks, causing PHP to interpret the constant name as a malformed string rather than a defined identifier. Root Cause The define() statement used typographic (curly) quotes instead of … Read more
Summary Changing the order of the InstallExecuteSequence in Wix 5 requires using the Sequence attribute instead of the deprecated Before or After attributes. This ensures proper action ordering during installation. Root Cause The error occurs because Wix 5 no longer supports the Before or After attributes in the InstallExecuteSequence table. Instead, it relies on the … Read more
Summary This postmortem analyzes why a seemingly simple requirement—automatically adding only newly onboarded users or newly enrolled devices to a Windows Hello for Business (WHfB)–enabling Entra ID group—became a production friction point. The core issue stemmed from misaligned identity lifecycle signals, incorrect assumptions about dynamic group capabilities, and lack of a clean onboarding discriminator between … Read more
Summary Issue: The system fails to ensure transactional consistency between database operations, REST client calls, and Kafka message sends. If a database save fails, the REST client call and Kafka message are not rolled back, leading to data inconsistency. Root Cause Lack of transactional boundary: The @Transactional annotation ensures database operations are rolled back on … Read more