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LRU + cache conflicts prevention. (#104)

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* LRU + cache conflicts prevention.

* Bugfix universalCache flooding ( issue #105 )

  1. Traefik cancels the context for old plugin instances
  2. Each plugin's Close() method is called
  3. The CacheInterfaceWrapper.Close() was calling cache.Close() on the shared singleton caches
  4. Each Close() triggered Clear() which logged "Cleared all items" at INFO level
This commit is contained in:
lukaszraczylo
2025-12-24 18:54:39 +00:00
committed by GitHub
parent 69e0d98c67
commit 413e4a1b7d
12 changed files with 2362 additions and 245 deletions
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internal/cache/backends/memory_wrapper.go
Vendored
+20 -30
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@@ -45,21 +45,11 @@ func (m *MemoryBackend) Get(ctx context.Context, key string) ([]byte, time.Durat
return nil, 0, false, err
}
// Get the item directly to check TTL
m.MemoryCacheBackend.mu.RLock()
item, exists := m.MemoryCacheBackend.items[key]
m.MemoryCacheBackend.mu.RUnlock()
if !exists {
return nil, 0, false, nil
}
var ttl time.Duration
if !item.expiresAt.IsZero() {
ttl = time.Until(item.expiresAt)
if ttl < 0 {
ttl = 0
}
// Get TTL using the TTL method
ttl, ttlErr := m.MemoryCacheBackend.TTL(ctx, key)
if ttlErr != nil {
// If we can't get TTL, still return the value with 0 TTL
ttl = 0
}
// Convert interface{} to []byte
@@ -68,8 +58,7 @@ func (m *MemoryBackend) Get(ctx context.Context, key string) ([]byte, time.Durat
if bytes, ok := val.([]byte); ok {
valueBytes = bytes
} else {
// If it's not already []byte, we might need to handle other types
// For now, we'll just return an error
// If it's not already []byte, return an error
return nil, 0, false, ErrInvalidValue
}
}
@@ -123,19 +112,20 @@ func (m *MemoryBackend) GetStats() map[string]interface{} {
}
return map[string]interface{}{
"type": stats.Type,
"hits": stats.Hits,
"misses": stats.Misses,
"sets": stats.Sets,
"deletes": stats.Deletes,
"errors": stats.Errors,
"evictions": stats.Evictions,
"size": stats.CurrentSize,
"max_size": stats.MaxSize,
"memory": stats.MemoryUsage,
"hit_rate": hitRate,
"uptime": stats.Uptime,
"start_time": stats.StartTime,
"type": stats.Type,
"hits": stats.Hits,
"misses": stats.Misses,
"sets": stats.Sets,
"deletes": stats.Deletes,
"errors": stats.Errors,
"evictions": stats.Evictions,
"size": stats.CurrentSize,
"max_size": stats.MaxSize,
"memory": stats.MemoryUsage,
"hit_rate": hitRate,
"uptime": stats.Uptime,
"start_time": stats.StartTime,
"shard_count": m.MemoryCacheBackend.GetShardCount(),
}
}