Why is swoole efficient?

The reason why swoole is efficient:

Resident in memory, avoids performance losses caused by repeated loading, and improves massive performance

Coroutine asynchronous, improves Concurrent processing capabilities for I/O-intensive scenarios (such as WeChat development, payment, login, etc.)

Conveniently develop Http, WebSocket, TCP, UDP and other applications, and can communicate with hardware

PHP high-performance microservice architecture has become a reality

(Recommended: swoole video tutorial)

Resident memory

Currently traditional PHP framework, before processing each request, must do the operation of loading the framework file and configuration. This may have become a big cause of performance issues, but with Swoole there is no such problem, once loaded and used many times.

Coroutines

Speaking of coroutines, we must first briefly talk about processes and threads. As we all know, processes occupy a lot of resources. A large number of processes must be created to handle requests. It’s not worth the gain. There are many multi-threaded applications. At the CPU level, several cores will perform several tasks. Once too many threads are created, there will be a loss in thread scheduling.

Coroutines are implemented on a single-thread basis, which can maximize the use of CPU resources without wasting them while waiting for I/O. Of course, the more coroutines, the more memory they occupy, but this is acceptable. Compared with processes and threads, the resources occupied are relatively small.

When using coroutines, when encountering scenarios such as reading and writing files, requesting interfaces, etc., the coroutines will be automatically suspended and the CPU will be given to other coroutines to perform tasks. This can improve single-threaded CPU resource utilization. Reduce waste, thereby improving performance.

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