AWS has introduced the MCP Server for Apache Spark History Server, enabling AI-driven debugging and optimization of Spark applications by allowing engineers to interactively query performance data using natural language. This open-source tool simplifies the traditionally complex process of performance troubleshooting, reducing the reliance on deep technical expertise and manual workflows. The MCP Server integrates seamlessly with existing Spark infrastructures, enhancing observability and operational efficiency.

The "use no memo" directive in React prevents the React Compiler from optimizing a function, allowing developers to bypass optimization temporarily for debugging or when integrating with incompatible libraries. It must be placed at the very beginning of a function body and is intended for short-term use. Best practices include documenting the reason for disabling optimization and ensuring correct syntax.