# Event handling

* Golang runtime uses `epoll`/`kqueue`/IOCP so no need for `libevent` or similar.
* See https://golang.org/search?q=netpoll#Global

## Existing techniques

For reference only, since using Go means we gain automatic integration.

From http://nginx.org/en/docs/events.html

| Method    | Linux | macOS | Windows | BSD | UNIX            | Notes                            |
|-----------|:-----:|:-----:|:-------:|:---:|:---------------:|:---------------------------------|
| select    | X     | X     | X       | X   | X               | Least efficient, widest support  |
| poll      | X     | X     |         | X   | X               | Low efficiency, wide support     |
| kqueue    |       | X, Go |         | X   | Go              | Efficient                        |
| epoll     | Go    |       |         |     |                 | Efficient                        |
| /dev/poll |       |       |         |     | X               | Efficient                        |
| eventport |       |       |         |     | Solaris 10+, Go | Problems, use /dev/poll instead  |
| IOCP      |       |       | X, Go   |     |                 | Recommended for Windows          |

* UNIX: Solaris, HP-UX, IRIX, Tru64