aiohttp-fast-url-dispatcher
A faster URL dispatcher for aiohttp
Decision gist · record as of 2026-08-14
No. The project is archived and abandoned as of July 2024. The author explicitly states it will become obsolete with aiohttp 3.10, and that version may already be available. Install only if you are running an older aiohttp version and have measured routing dispatch as a real performance bottleneck; otherwise, wait for or upgrade to aiohttp 3.10+ where this optimization is expected to be built in.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires aiohttp as a runtime dependency; static routes take precedence over dynamic (parameterized) routes when both match the same URL.
- Low install friction with a single dependency on aiohttp.
- However, the project is archived and abandoned as of July 2024, with no maintenance expected.
License · maintenance · safety
permissive license (permissive) — Licensed under Apache Software License (permissive), allowing commercial and private use with minimal restrictions.
last release 2024-07-05 (770 days) · last repo commit 2024-07-30 · archived
0 known vulnerabilities (OSV.dev, 2026-08-14) · 105,180 downloads/mo, #12,715 on PyPI
Alternatives
Verify before relying
pip install aiohttp-fast-url-dispatcher
from aiohttp_fast_url_dispatcher import FastUrlDispatcher, attach_fast_url_dispatcher
from aiohttp import web
dispatcher = FastUrlDispatcher()
app = web.Application()
attach_fast_url_dispatcher(app, dispatcher)- Whether aiohttp 3.10 has been released and whether this package's optimizations are now redundant or superseded.
- Performance improvement magnitude in real-world applications with varying route counts.
- Compatibility with recent aiohttp versions beyond 3.9.
What it is and what it does
aiohttp-fast-url-dispatcher provides a replacement URL router for aiohttp web applications that uses indexing instead of linear search to match incoming requests to route handlers. The default aiohttp UrlDispatcher performs a linear search through all registered routes on every request, which becomes a bottleneck when an application has many routes. FastUrlDispatcher maintains an index to enable constant-time or near-constant-time lookups, reducing dispatch overhead.
The package is designed to be a drop-in replacement: you can attach it to an existing aiohttp Application or pass it as the router when creating a new one. However, it was always intended as a temporary solution—the author notes that the optimization is expected to merge upstream into aiohttp 3.10, making this library obsolete. The project is now archived and no longer maintained.
Use it for
- Optimize request routing in aiohttp applications with hundreds or thousands of registered routes.
- Reduce latency in high-throughput web services where route dispatch is a measurable bottleneck.
- Migrate from default aiohttp routing to indexed dispatch without rewriting application code.
- Evaluate indexed routing performance before aiohttp 3.10 adoption.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The project is archived and abandoned as of July 2024. The author explicitly states it will become obsolete with aiohttp 3.10, and that version may already be available. Install only if you are running an older aiohttp version and have measured routing dispatch as a real performance bottleneck; otherwise, wait for or upgrade to aiohttp 3.10+ where this optimization is expected to be built in.
Install
aiohttp-fast-url-dispatcher on PyPI
Before you install
Low install friction with a single dependency on aiohttp. However, the project is archived and abandoned as of July 2024, with no maintenance expected. The library was designed as a temporary optimization pending upstream changes to aiohttp 3.10.
Requires aiohttp as a runtime dependency; static routes take precedence over dynamic (parameterized) routes when both match the same URL.
License in practice
Licensed under Apache Software License (permissive), allowing commercial and private use with minimal restrictions.
Quickstart
pip install aiohttp-fast-url-dispatcher
from aiohttp_fast_url_dispatcher import FastUrlDispatcher, attach_fast_url_dispatcher
from aiohttp import web
dispatcher = FastUrlDispatcher()
app = web.Application()
attach_fast_url_dispatcher(app, dispatcher)Verify before relying
- Whether aiohttp 3.10 has been released and whether this package's optimizations are now redundant or superseded.
- Performance improvement magnitude in real-world applications with varying route counts.
- Compatibility with recent aiohttp versions beyond 3.9.
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release <4.0,>=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packageaiohttp |
| Maintenance | Abandoned 770 days since the last release |
| Last repo commit | repository archived |
| First released | |
| Downloads | 105,180 / month, #12,715 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 2 - Pre-AlphaIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries |
Evidence: aiohttp_fast_url_dispatcher-0.3.1-py3-none-any.whl
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