aiohttp-cache
is a plugin for aiohttp.web server that allow to use a
cache system to improve the performance of your site.
import asyncio
from aiohttp import web
from aiohttp_cache import ( # noqa
setup_cache,
cache,
)
PAYLOAD = {"hello": "aiohttp_cache"}
WAIT_TIME = 2
@cache()
async def some_long_running_view(request: web.Request) -> web.Response:
await asyncio.sleep(WAIT_TIME)
payload = await request.json()
return web.json_response(payload)
app = web.Application()
setup_cache(app)
app.router.add_post("/", some_long_running_view)
web.run_app(app)
Note: redis should be available at
$CACHE_URL
env variable orredis://localhost:6379/0
import asyncio
import yarl
from aiohttp import web
from envparse import env
from aiohttp_cache import ( # noqa
setup_cache,
cache,
RedisConfig,
)
PAYLOAD = {"hello": "aiohttp_cache"}
WAIT_TIME = 2
@cache()
async def some_long_running_view(request: web.Request) -> web.Response:
await asyncio.sleep(WAIT_TIME)
payload = await request.json()
return web.json_response(payload)
app = web.Application()
url = yarl.URL(env.str("CACHE_URL", default="redis://localhost:6379/0"))
setup_cache(
app,
cache_type="redis",
backend_config=RedisConfig(
db=int(url.path[1:]), host=url.host, port=url.port
),
)
app.router.add_post("/", some_long_running_view)
web.run_app(app)
Let's say you would like to cache the requests just by the method and json payload, then you can setup this as per the follwing example.
Note default key_pattern is:
DEFAULT_KEY_PATTERN = (
AvailableKeys.method,
AvailableKeys.host,
AvailableKeys.path,
AvailableKeys.postdata,
AvailableKeys.ctype,
)
import asyncio
from aiohttp import web
from aiohttp_cache import setup_cache, cache, AvailableKeys # noqa
PAYLOAD = {"hello": "aiohttp_cache"}
WAIT_TIME = 2
@cache()
async def some_long_running_view(request: web.Request) -> web.Response:
await asyncio.sleep(WAIT_TIME)
payload = await request.json()
return web.json_response(payload)
custom_cache_key = (AvailableKeys.method, AvailableKeys.json)
app = web.Application()
setup_cache(app, key_pattern=custom_cache_key)
app.router.add_post("/", some_long_running_view)
web.run_app(app)
This project is released under BSD license. Feel free
The latest developer version is available in a github repository: https://github.com/cr0hn/aiohttp-cache
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