Can php be distributed?

Distributed system is a software system built on the network. It is precisely because of the characteristics of software that distributed systems have a high degree of cohesion and transparency. Therefore, the difference between networks and distributed systems lies more in the high-level software (especially the operating system) than in the hardware.

Swoole Distributed communication framework SwooleDistributed

The full name of the SD framework is SwooleDistributed. Judging from the name, one is Swoole and the other is Distributed is an application server framework based on Swoole extension that can be deployed in a distributed manner. (Recommended learning: PHP video tutorial)

With the help of PHP’s efficient development environment, Swoole’s high-performance asynchronous network communication engine, and other high-availability extensions and tools, the SD framework provides Provide developers with a stable, efficient and powerful application server framework.

Here we list the various functions and module components provided by SD

Mixed protocol, the SD framework supports long connection protocol TCP , WebSocket, Short Connection Protocol HTTP, and UDP. By configuring and opening different ports, developers can easily manage different protocols and share a set of business codes. Of course, you can isolate the code through intelligent routing.

Long connections can be configured with different data transmission protocols, such as binary protocols, text protocols, etc. Various protocol encapsulation can be customized through the encapsulator and unpacker interface provided by the framework, and among various protocols can be automatically converted between different ports. For example, if you send a message through broadcast and the information flows to different clients, and the clients use different protocols, the framework will automatically convert different protocol encapsulations according to different ports. You can also send push messages to all long-connection clients through Http. Businesses like this kind of mixed-protocol collaboration will be extremely simple on the SD framework.

MVC and intelligent routing, the design of the framework is an MVC architecture, in which each level can be further divided into sub-levels, and developers can continue to layer the Controller and manage it through different folders. The Model can also be subdivided into business layer and data layer, which all depends on the developer's own system design. Smart routing will process the data unpacked by the depacketizer and be responsible for delivering the data to the Controller layer.

Middleware, SD framework also provides middleware, which can process incoming data, such as cleaning abnormal data, modifying data, traffic statistics, collecting logs and other functions. Multiple middlewares can be set and they are bound to ports.

Object Pool, Most objects in the SD framework use object pool technology. Object pool technology is conducive to the stability of system memory, reduces the number of GCs, and improves the operating efficiency of the system. Facts have proven that object pools have made a great contribution to system stability. Developers can also use this set of object pool technologies to increase the reuse of objects, reduce the frequency of GC and NEW, and reduce system glitches and memory leaks. There are great stability improvements.

Asynchronous client and connection pool, Mysql, Redis, Http client, Tcp client, and other more complex clients are all asynchronous mode in the SD framework , Asynchronous solves the overall concurrency capability of the system, but the asynchronous client needs to provide connection pool maintenance. The SD framework provides a connection pool. Developers do not need to manage the connection pool themselves, they only need to use it.

Coroutine, asynchronous event callbacks solve concurrency performance, but cause confusion in business code. The SD framework provides coroutines to solve this problem. It provides asynchronous writing method through the yield keyword, which eliminates a large number of callback nesting in business writing. You can achieve asynchronous performance through the yield synchronous writing method. Coroutines provide a complete system, including timeouts, exceptions, sleep, multi-way selection, and the creation of user coroutines.

Scheduled tasks, as the name suggests, tasks that are executed regularly.

Task delivery supports delivery of time-consuming tasks to the Task process.

Auto Reload, you can turn on the automatic Reload function of the framework, so that code modifications will be responded to immediately.

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