facebook tornado tech talk

7/23/2019 Facebook Tornado Tech Talk

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Tornado Web Server

Bret Taylor

Director of Products


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Background


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Background

Small, fast, and hackable

Focus on the fundamentals: request handling, performance,templating, localization, security, and simplicity

Non-blocking I/O to enable streaming and hanging connections (i.e.,real-time services)

Few dependencies and application assumptions


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Hello, world


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Templates


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Templates


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Templatesbase.html

items.html


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UI modules: reusable components

home.html entry.html


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blogentry.html


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Secure cookies + authentication

value timestamp signature


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Real-time + non-blocking

wait for messages or timeout (, , or even seconds) ,s of activehanging connectionsin this state


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Real-time + non-blocking


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Third party authentication


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Tornado in production

nginx(load balancer +static file server)

Tornado frontends

MySQL + memcached


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Asynchronous design style

Blocking operations are not an issue if there's no more than oneconcurrent request per server instance

Synchronous style of programming is easier, so dont asynceverything

Fast things (e.g., memcache) dont need to be multiplexed, slow things(e.g., HTTP requests to external sites) do

Gray area: database requests

Service-oriented architecture helps mitigate some of these issues


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http://www.tornadoweb.org/

facebook tornado tech talk

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