What We Do in the Shadows: the Specter of Serverless Tracing

Serverless computing, while idealized as eliminating all hosting concerns through vendor management, still presents challenges like security configuration, cold starts, and particularly observability issues. Observability in serverless architectures, often event-based, is complex due to the asynchronous nature of events handled by multiple services. This complexity makes tracing specific events difficult, often requiring structured logs and tools like AWS X-Ray for insights. However, these tools, while beneficial, are limited in providing complete performance insights, necessitating integration with broader observability solutions. The responsibility for effective observability ultimately lies with the developers, who must plan for it within their code to ensure meaningful insights.