74 lines
1.7 KiB
Python
74 lines
1.7 KiB
Python
"""
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Example of caching using aiocache package. To run it you will need to install
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aiocache with `pip install aiocache` plus a Redis instance running
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in localhost:6379
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Running this example you will see that the first call lasts 3 seconds and
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the rest are instant because the value is retrieved from Redis.
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If you want more info about the package check
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https://github.com/argaen/aiocache
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"""
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import asyncio
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import uuid
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from sanic import Sanic
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from sanic.response import json
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from sanic.log import log
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from aiocache import caches, cached
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app = Sanic(__name__)
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config = {
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"default": {
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"cache": "aiocache.RedisCache",
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"endpoint": "127.0.0.1",
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"timeout": 2,
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"namespace": "sanic",
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"serializer": {
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"class": "aiocache.serializers.JsonSerializer"
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}
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}
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}
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@app.listener('before_server_start')
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def init_cache(sanic, loop):
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caches.set_config(config)
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# You can use alias or pass explicit args instead
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@cached(key="my_custom_key", ttl=30, alias="default")
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async def expensive_call():
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log.info("Expensive has been called")
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await asyncio.sleep(3)
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# You are storing the whole dict under "my_custom_key"
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return {"test": str(uuid.uuid4())}
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async def get_cache_value():
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# This lazy loads a singleton so it will return the same instance every
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# time. If you want to create a new instance, you can use
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# `caches.create("default")`
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cache = caches.get("default")
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return await cache.get("my_custom_key")
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@app.route("/")
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async def test(request):
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log.info("Received GET /")
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return json(await expensive_call())
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@app.route("/retrieve")
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async def test(request):
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log.info("Received GET /retrieve")
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return json(await get_cache_value())
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app.run(host="0.0.0.0", port=8000)
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