How to call swoole's worker

Swoole provides a complete process management mechanism. When the Worker process exits abnormally, such as a fatal error in PHP, being accidentally killed by other programs, or exiting normally after reaching the max_request number.                                                                                                             (Recommended learning: swoole video tutorial )

The main process will restart the new Worker process. Code can be written in the Worker process like ordinary apache php or php-fpm. There is no need to write asynchronous callback code like Node.js.

Worker process

Accepts the request packet delivered by the Reactor thread, and executes the PHP callback function to process the data

Generates response data and sends it to the Reactor thread , sent to the TCP client by the Reactor thread

It can be in asynchronous non-blocking mode or synchronous blocking mode

Worker runs in a multi-process manner

worker_num

Description: Specify the number of worker processes to start.

Note: swoole is the master-> n * worker mode. The more worker processes are opened, the greater the server load capacity, but the corresponding server will occupy more memory. At the same time, when there are too many worker processes, the system overhead caused by switching between processes will be greater. Therefore, it is recommended that the number of worker processes opened is 1-4 times the number of CPU cores.

Example:

'worker_num' => 8

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