Use a single instance for improve performance.

[byehack]

import asyncio, httpx


async def req(url):
    request = httpx.Request("GET", url)
    resp = await client.send(request)
    request = httpx.Request("GET", url, cookies=resp.cookies)
    resp = await client.send(request)


client = httpx.AsyncClient()
urls = [...]
asyncio.run(asyncio.gather(*[req(url) for url in urls]))

Are we allowed to use single main instance and use it with different request options?

[zanieb]

Hey @byehack — yes that is recommended but you'll want to context manage the client

async def main:
    async with httpx.AsyncClient() as client:
        ....

See https://www.python-httpx.org/async/#making-async-requests

[byehack]

Thanks @madkinsz
True, I read documentation.
but in presentation I noticed it uses high memory and CPU usages. (when huge sending requests)
it didn't clarify in document that .send method will affect client instance or not. (like persistance)
before do changes in my code, I wanted to ensure that it doesn't make problems.