http://simonwillison.net/2024-11-24T17:47:27+00:00Simon Willison2024-11-24T17:47:27+00:002024-11-24T17:47:27+00:00https://simonwillison.net/2024/Nov/24/async-django/#atom-tag

<p><strong><a href="https://jonathanadly.com/is-async-django-ready-for-prime-time">Is async Django ready for prime time?</a></strong></p> Jonathan Adly reports on his experience using Django to build <a href="https://colivara.com/">ColiVara</a>, a hosted RAG API that uses <a href="https://huggingface.co/vidore/colqwen2-v1.0">ColQwen2</a> visual embeddings, inspired by the <a href="https://arxiv.org/abs/2407.01449">ColPali</a> paper.</p> <p>In a breach of <a href="https://en.wikipedia.org/wiki/Betteridge%27s_law_of_headlines">Betteridge's law of headlines</a> the answer to the question posed by this headline is “yes”.</p> <blockquote> <p>We believe async Django is ready for production. In theory, there should be no performance loss when using async Django instead of FastAPI for the same tasks.</p> </blockquote> <p>The ColiVara application is itself open source, and you can see how it makes use of Django’s relatively new <a href="https://docs.djangoproject.com/en/5.1/topics/db/queries/#asynchronous-queries">asynchronous ORM features</a> in the <a href="https://github.com/tjmlabs/ColiVara/blob/main/web/api/views.py">api/views.py module</a>.</p> <p>I also picked up a useful trick <a href="https://github.com/tjmlabs/ColiVarE/blob/0761a9f9f7ba582f56e49a48d9fdefedcfaa87a5/Dockerfile#L14">from their Dockerfile</a>: if you want <code>uv</code> in a container you can install it with this one-liner:</p> <pre><code>COPY --from=ghcr.io/astral-sh/uv:latest /uv /bin/uv </code></pre> <p><small></small>Via <a href="https://news.ycombinator.com/item?id=42225088">Hacker News</a></small></p> <p>Tags: <a href="https://simonwillison.net/tags/asynchronous">asynchronous</a>, <a href="https://simonwillison.net/tags/django">django</a>, <a href="https://simonwillison.net/tags/python">python</a>, <a href="https://simonwillison.net/tags/embeddings">embeddings</a>, <a href="https://simonwillison.net/tags/rag">rag</a>, <a href="https://simonwillison.net/tags/uv">uv</a></p>

2009-11-17T18:07:37+00:002009-11-17T18:07:37+00:00https://simonwillison.net/2009/Nov/17/nodepdf/#atom-tag

<p><strong><a href="http://nodejs.org/jsconf.pdf">node.js at JSConf.eu (PDF)</a></strong></p> node.js creator Ryan Dahl’s presentation at this year’s JSConf.eu. The principle philosophy is that I/O in web applications should be asynchronous—for everything. No blocking for database calls, no blocking for filesystem access. JavaScript is a mainstream programming language with a culture of callback APIs (thanks to the DOM) and is hence ideally suited to building asynchronous frameworks. <p>Tags: <a href="https://simonwillison.net/tags/asynchronous">asynchronous</a>, <a href="https://simonwillison.net/tags/eventio">eventio</a>, <a href="https://simonwillison.net/tags/javascript">javascript</a>, <a href="https://simonwillison.net/tags/nodejs">nodejs</a>, <a href="https://simonwillison.net/tags/pdf">pdf</a>, <a href="https://simonwillison.net/tags/ryan-dahl">ryan-dahl</a></p>