Why use sync.Pool? Is it possible to store SSE connections in sync.Pool?

sync.Pool in Go is used for efficient reuse of temporary objects to reduce garbage collector load and improve performance. It stores objects that can be taken and returned, which is especially useful for frequently created and destroyed data structures.

Storing SSE (Server-Sent Events) connections in sync.Pool is not recommended because:

• SSE connections are long-lived objects with state and open network connections.
• sync.Pool is intended for temporary objects that can be safely reset and reused.
• Using sync.Pool for such resources can lead to unexpected errors and leaks.

It is better to use specialized data structures, such as maps or lists with connection lifecycle management, to handle SSE connections.