The correct keyword to create a goroutine in Go is 'go'. When 'go' keyword is used in front of a function call, it instructs Go runtime to execute that function concurrently as a goroutine.

The copy function in Go is used to make a copy of a slice or map. It takes two arguments: the destination slice or map and the source slice or map to copy from. It creates a new copy, independent of the original.

Pointers in Go offer advantages such as the ability to modify values passed to functions, which is especially useful for large data structures, leading to improved performance. Additionally, they enable the sharing of data between different parts of a program efficiently.

The _ is a blank identifier used to discard values in Go. When used in conjunction with map lookup, it discards the value but captures whether the key exists or not in the map.

Channels are the preferred way to communicate between goroutines in Go, providing a safe and efficient means of passing data.

Yes, anonymous functions in Go can indeed be recursive. This means they can call themselves within their own definition. This feature can be useful in scenarios where a function needs to call itself until a certain condition is met, similar to traditional recursive functions.

Collections in MongoDB are analogous to Tables in relational databases. They are containers for documents, where each document can vary in structure but is typically JSON-like.

The range loop in Go is used to iterate over elements in an array, slice, string, or map. It provides a concise syntax for iterating over collections and is commonly used in Go for such purposes.

Improving performance when working with JSON in Go applications involves various strategies to minimize overhead and optimize resource usage. One approach is to minimize allocations during JSON encoding and decoding by reusing buffers and pools where possible. This helps reduce memory churn and improves efficiency, especially in high-throughput scenarios. Additionally, precomputing JSON encoding for frequently used data can save processing time by caching serialized representations. While using a faster JSON encoding library may offer some performance gains, the built-in encoding/json package in Go is generally efficient for most use cases. Finally, leveraging concurrency for parallel JSON operations can further enhance performance by utilizing multiple CPU cores effectively. By applying these techniques judiciously, developers can achieve better performance when working with JSON in Go applications.

Reflection in Go allows developers to inspect the attributes and methods of loaded plugins dynamically. By leveraging reflection, the application can determine the capabilities of each plugin and invoke them based on user-defined criteria or application requirements. This approach enables a flexible and extensible plugin system in Go applications.