Omniracle

Fastapi 设置workers参数后,任务分配到不同的workers用的是什么策略?

在 FastAPI 中,当设置 workers 参数时,任务的分配策略主要依赖于底层的 ASGI 服务器,如 Uvicorn 或者 Gunicorn。以下是相关的任务分配策略和机制:

  1. ASGI 标准:FastAPI 使用 ASGI(Asynchronous Server Gateway Interface)标准,这使得它能够处理异步请求。ASGI 服务器(如 Uvicorn)负责将请求分发给不同的 worker 进程。

  2. Uvicorn 和 Gunicorn:通常,FastAPI 应用会与 Uvicorn 一起运行,而 Gunicorn 可以作为进程管理器来启动多个 Uvicorn worker。Gunicorn 负责监听指定的 IP 和端口,并将请求分发给 Uvicorn worker 进程。

  3. 负载均衡:Gunicorn 作为进程管理器,负责管理 worker 进程的生命周期,并根据需要启动或重启进程以保持指定的 worker 数量。请求的分发通常是基于轮询(round-robin)或其他简单的负载均衡策略。

  4. 并发与并行:FastAPI 利用 Python 的异步特性(如 asyncawait 语法)来提高并发处理能力。虽然多个 worker 进程可以并行处理请求,但每个 worker 内部的请求处理是通过异步机制来实现的。

  5. 资源管理:在多 worker 环境中,每个 worker 进程会占用一定的系统资源(如内存和 CPU)。因此,合理配置 worker 数量是确保系统性能和稳定性的关键。

综上所述,FastAPI 在设置 workers 参数后,主要依赖于 ASGI 服务器(如 Uvicorn 和 Gunicorn)的进程管理和负载均衡机制来分配任务。通过合理配置和使用异步特性,FastAPI 能够高效地处理并发请求。

- RESOURCES -

使用 FastAPI 實現高效能的 Python 非同步處理(上) | by Tsai Yi Lin | Medium

使用 FastAPI 實現高效能的 Python 非同步處理(上) | by Tsai Yi Lin | Medium

Python在3.5版本中開始支援使用協程(coroutines)來撰寫非同步(asynchronous)程式,並使用 async 和 await 語法來實現。coroutines 是由兩個單字合併而成的,分別是 cooperation + routine, cooperation 意指合作,routine 意指例行事件。這裡 routine 指得是程序中被呼叫的 function。將…......

medium.com

第一步 - FastAPI

第一步 - FastAPI

FastAPI framework, high performance, easy to learn, fast to code, ready for production......

fastapi.tiangolo.com

后台任务 - FastAPI

后台任务 - FastAPI

FastAPI framework, high performance, easy to learn, fast to code, ready for production......

fastapi.tiangolo.com

服务器工作者 - Gunicorn 与 Uvicorn - FastAPI 中文

服务器工作者 - Gunicorn 与 Uvicorn - FastAPI 中文

......

fastapi.org.cn

查询参数和字符串校验 - FastAPI

查询参数和字符串校验 - FastAPI

FastAPI framework, high performance, easy to learn, fast to code, ready for production......

fastapi.tiangolo.com

MORE RESULTS
部署概念 - FastAPI

部署概念 - FastAPI

FastAPI framework, high performance, easy to learn, fast to code, ready for production......

fastapi.tiangolo.com

FastAPI 中怎么设置定时任务?FastAPI 中设置定时任务的方法

FastAPI 中怎么设置定时任务?FastAPI 中设置定时任务的方法

在 FastAPI 中设置定时任务,可以使用 APScheduler、celery 或者 asyncio 等模块。APScheduler 使用简单,asyncio 适合与 FastAPI 的异步特性。......

apifox.com

Celery与FastAPI实现分布式异步任务队列 - AI备忘录

Celery 分布式任务队列框架,主要包括三个组成成分:[1] - Celery 客户端(Client)[2] - 消息中间件(Message Broker)[3] - Celery Worke.........

www.aiuai.cn

What Is The Impact Of AI On Search Engine Optimization?

What Is The Impact Of AI On Search Engin...

The impact of AI on search engine optimization (SEO) is profound and multifaceted, reshaping how search engines operate and how businesses approach their digital marketing strategies. Here are the key...

King Of Uk

King Of Uk

The current King of the United Kingdom is King Charles III. He ascended to the throne on September 8, 2022, following the death of his mother, Queen Elizabeth II. Key Roles and Responsibilities- Head ...

How Can I Increase My Income Effectively?

How Can I Increase My Income Effectively...

To effectively increase your income, consider the following strategies based on the knowledge provided: 1. Create Multiple Streams of Income - Passive Income: Invest in dividend stocks, real estate,...

What Are The Benefits Of Saving Money?

What Are The Benefits Of Saving Money?

The main question is: What are the benefits of saving money? Breakdown of Related Questions and Answers:1. Financial Stability and Security: - Saving money provides a safety cushion for emergencies,...

How Will AI Search Impact SEO?

How Will AI Search Impact SEO?

AI search is poised to significantly impact SEO by transforming how search engines understand and process information, thereby influencing SEO strategies and practices. Here are the key ways AI search...

How Can I Improve My Self-awareness?

How Can I Improve My Self-awareness?

Improving self-awareness is a multifaceted process that involves understanding your thoughts, emotions, motivations, and behaviors. Here are some effective strategies based on psychological insights:1...