async-lru

info:: Simple lru cache for asyncio

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Installation

pip install async_lru

Usage

import asyncio

import aiohttp
from async_lru import alru_cache

calls = 0

@alru_cache()
async def download(url):
    global calls

    calls += 1

    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            return await response.text()


async def main():
    coros = [
        download('https://www.python.org/'),
        download('https://www.python.org/'),
        download('https://www.python.org/'),
        download('https://www.python.org/'),
        download('https://www.python.org/'),
        download('https://www.python.org/'),
    ]

    await asyncio.gather(*coros)

    assert calls == 1


loop = asyncio.get_event_loop()

loop.run_until_complete(main())

# closing is optional, but strictly recommended
loop.run_until_complete(download.close())

loop.close()

Python 3.3+ is required

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