root
c1ef717d17
- shared/cache: add Options/L1/async/metrics/prefix decorators, multi-key ops, Redis pool tuning, and JSON readthrough metrics - worker-generate: claim tasks via DB lease + heartbeat, requeue stale queued tasks, expire dead leases with refund/cache invalidation - tenant: version article cache keys so worker recovery invalidations propagate cleanly - shared/config: expand Redis (pool/timeouts/TLS) and Generation (lease/recovery) configs with defaults Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
127 lines
2.4 KiB
Go
127 lines
2.4 KiB
Go
package cache
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import (
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"context"
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"sync"
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"time"
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)
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type memoryEntry struct {
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data []byte
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expiresAt time.Time
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}
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type memoryCache struct {
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mu sync.RWMutex
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entries map[string]memoryEntry
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}
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func newMemoryCache() Cache {
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c := &memoryCache{entries: make(map[string]memoryEntry)}
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go c.evictLoop()
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return c
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}
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func (c *memoryCache) Get(_ context.Context, key string) ([]byte, error) {
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c.mu.RLock()
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entry, ok := c.entries[key]
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c.mu.RUnlock()
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if !ok || time.Now().After(entry.expiresAt) {
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if ok {
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c.mu.Lock()
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delete(c.entries, key)
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c.mu.Unlock()
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}
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return nil, ErrNotFound
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}
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dst := make([]byte, len(entry.data))
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copy(dst, entry.data)
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return dst, nil
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}
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func (c *memoryCache) GetMulti(ctx context.Context, keys []string) (map[string][]byte, error) {
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if len(keys) == 0 {
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return map[string][]byte{}, nil
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}
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result := make(map[string][]byte, len(keys))
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for _, key := range keys {
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value, err := c.Get(ctx, key)
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if err != nil {
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if err == ErrNotFound {
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continue
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}
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return nil, err
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}
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result[key] = value
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}
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return result, nil
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}
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func (c *memoryCache) Set(_ context.Context, key string, value []byte, ttl time.Duration) error {
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dst := make([]byte, len(value))
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copy(dst, value)
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c.mu.Lock()
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c.entries[key] = memoryEntry{data: dst, expiresAt: time.Now().Add(ttl)}
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c.mu.Unlock()
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return nil
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}
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func (c *memoryCache) SetMulti(ctx context.Context, items []Item) error {
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for _, item := range items {
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if err := c.Set(ctx, item.Key, item.Value, item.TTL); err != nil {
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return err
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}
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}
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return nil
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}
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func (c *memoryCache) Delete(_ context.Context, key string) error {
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c.mu.Lock()
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delete(c.entries, key)
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c.mu.Unlock()
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return nil
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}
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func (c *memoryCache) DeleteMany(ctx context.Context, keys []string) error {
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for _, key := range keys {
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if err := c.Delete(ctx, key); err != nil {
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return err
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}
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}
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return nil
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}
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func (c *memoryCache) DeletePrefix(_ context.Context, prefix string) error {
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if prefix == "" {
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return nil
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}
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c.mu.Lock()
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for key := range c.entries {
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if len(key) >= len(prefix) && key[:len(prefix)] == prefix {
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delete(c.entries, key)
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}
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}
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c.mu.Unlock()
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return nil
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}
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func (c *memoryCache) evictLoop() {
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ticker := time.NewTicker(60 * time.Second)
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defer ticker.Stop()
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for range ticker.C {
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now := time.Now()
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c.mu.Lock()
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for k, v := range c.entries {
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if now.After(v.expiresAt) {
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delete(c.entries, k)
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}
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}
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c.mu.Unlock()
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}
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}
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