forked from cartsnitch/api
Barcode Betty
3300d67137
- Add connection pool config to SQLAlchemy async engine (pool_size=10, max_overflow=20, pool_pre_ping, pool_recycle) - Implement Redis connection pool in CacheClient with initialize/close lifecycle - Wire lifespan startup/shutdown to initialize and dispose pools - Add dispose_engine() for graceful DB pool cleanup on shutdown Closes CAR-550 Co-Authored-By: Paperclip <noreply@paperclip.ing>
52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
"""Redis/DragonflyDB caching helpers."""
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import redis.asyncio as redis
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from cartsnitch_api.config import settings
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class CacheClient:
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"""Redis/DragonflyDB caching with connection pooling.
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Will be used for expensive queries: price trends, product comparisons.
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Cache invalidation via Redis pub/sub events from other services.
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"""
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def __init__(self) -> None:
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self._pool: redis.ConnectionPool | None = None
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self._client: redis.Redis | None = None
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async def initialize(self) -> None:
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"""Initialize the Redis connection pool."""
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self._pool = redis.ConnectionPool.from_url(
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settings.redis_url,
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max_connections=20,
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decode_responses=True,
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)
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self._client = redis.Redis(connection_pool=self._pool)
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async def close(self) -> None:
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"""Close the Redis connection pool."""
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if self._client:
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await self._client.aclose()
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if self._pool:
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await self._pool.aclose()
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async def get(self, key: str) -> str | None:
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if not self._client:
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return None
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return await self._client.get(key)
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async def set(self, key: str, value: str, ttl_seconds: int = 300) -> None:
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if not self._client:
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return
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await self._client.set(key, value, ex=ttl_seconds)
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async def delete(self, key: str) -> None:
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if not self._client:
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return
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await self._client.delete(key)
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cache_client = CacheClient()
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