feat:初版

apps/api/app/services/cache.py

@@ -0,0 +1,53 @@
+import hashlib
+import json
+import redis.asyncio as redis
+from ..core import get_settings
+
+settings = get_settings()
+
+
+class CacheService:
+    def __init__(self):
+        self.redis: redis.Redis | None = None
+
+    async def connect(self):
+        self.redis = redis.from_url(settings.redis_url)
+
+    async def disconnect(self):
+        if self.redis:
+            await self.redis.close()
+
+    def _make_key(
+        self,
+        source_text: str,
+        source_lang: str,
+        target_lang: str,
+        style: str,
+        glossary_version: str | None = None,
+        model_version: str | None = None,
+    ) -> str:
+        normalized = source_text.strip().lower()
+        content = f"{normalized}:{source_lang}:{target_lang}:{style}"
+        if glossary_version:
+            content += f":{glossary_version}"
+        if model_version:
+            content += f":{model_version}"
+        hash_val = hashlib.sha256(content.encode()).hexdigest()[:16]
+        return f"tr:{hash_val}"
+
+    async def get(self, key: str) -> dict | None:
+        if not self.redis:
+            return None
+        data = await self.redis.get(key)
+        if data:
+            return json.loads(data)
+        return None
+
+    async def set(self, key: str, value: dict, ttl: int | None = None):
+        if not self.redis:
+            return
+        ttl = ttl or settings.cache_ttl_seconds
+        await self.redis.set(key, json.dumps(value), ex=ttl)
+
+
+cache_service = CacheService()