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perf: replace Redis KEYS with SCAN in clear_prefix (#98)
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Closes #98

Replace blocking `client.keys(pattern)` with non-blocking
`client.scan_iter(match=pattern)` to avoid full-keyspace scans
that block the Redis server during cache invalidation.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Cal Corum 2026-03-20 09:02:22 -05:00
parent 6c49233392
commit df9e9bedbe
1 changed files with 5 additions and 3 deletions
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8
utils/cache.py
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@ -188,9 +188,11 @@ class CacheManager:
try: try:
pattern = f"{prefix}:*" pattern = f"{prefix}:*"
keys = await client.keys(pattern) keys_to_delete = []
if keys: async for key in client.scan_iter(match=pattern):
deleted = await client.delete(*keys) keys_to_delete.append(key)
if keys_to_delete:
deleted = await client.delete(*keys_to_delete)
logger.info(f"Cleared {deleted} cache keys with prefix '{prefix}'") logger.info(f"Cleared {deleted} cache keys with prefix '{prefix}'")
return deleted return deleted
except Exception as e: except Exception as e: