The "Performance" tool in Browser Developer Tools is used to analyze the performance of a web page. It provides a timeline of events, helping developers identify bottlenecks and optimize page speed.

In error handling, checkpointing refers to the process of preserving data or program state when an error occurs. This helps in restarting from a known point after the occurrence of an error.

CDNs cache content on multiple servers globally, reducing latency by serving content from the nearest server to the user. This optimizes performance by minimizing the distance data travels.

Dijkstra's Algorithm is the preferred choice for finding the shortest path in a graph. It guarantees the shortest path in weighted graphs, making it suitable for scenarios where accurate distance calculations are crucial, such as network routing.

MongoDB handles relationships between data through embedding and referencing. Embedding involves storing related data within the same document, while referencing involves using references to link documents.

When resolving a merge conflict in Git, it's essential to communicate and collaborate with team members to ensure the changes are correctly integrated. Collaboration is crucial to understanding conflicting changes and finding the best resolution.

A code review checklist often includes items related to coding standards, ensuring consistency and adherence to best practices across the codebase. By following established coding standards, developers can write maintainable, readable, and efficient code, which ultimately benefits the project's quality and scalability.

When facing a sudden spike in error rates, analyze error patterns, identify recent changes in the codebase or configuration, and check dependencies for issues. This proactive approach helps pinpoint the cause and take appropriate action. Ignoring the spike or increasing server capacity without investigating the root cause is a reactive strategy that may not address the underlying issue. Disabling error logging temporarily hinders troubleshooting efforts.

For a microservices-based web application, Java with Spring Boot is a robust choice. Spring Boot provides a well-structured and modular framework for building microservices, ensuring scalability and maintainability.

A graph database is best suited for hierarchical data storage. It represents data in the form of nodes and edges, making it efficient for storing and querying hierarchical relationships.

In multi-version concurrency control (MVCC), each transaction sees a historical snapshot of the database. This means that each transaction sees a version of the database as it existed at the start of the transaction, ensuring consistency and isolation.

IaC stands for Infrastructure as Code. It is a key DevOps practice that involves managing and provisioning computing infrastructure through machine-readable script files, rather than through physical hardware configuration or interactive configuration tools.