Get retrieves data from the cache.
(key string, dest interface{})
| 150 | |
| 151 | // Get retrieves data from the cache. |
| 152 | func (c *BadgerCache) Get(key string, dest interface{}) (bool, error) { |
| 153 | var found bool |
| 154 | |
| 155 | err := c.db.View(func(txn *badger.Txn) error { |
| 156 | item, err := txn.Get([]byte(key)) |
| 157 | if err == badger.ErrKeyNotFound { |
| 158 | getCacheLogger().Debug("Cache miss for: %s", key) |
| 159 | |
| 160 | return nil |
| 161 | } |
| 162 | |
| 163 | if err != nil { |
| 164 | return fmt.Errorf("badger get operation: %w", err) |
| 165 | } |
| 166 | |
| 167 | return item.Value(func(val []byte) error { |
| 168 | // Parse the cache item |
| 169 | var cacheItem CacheItem |
| 170 | if err := json.Unmarshal(val, &cacheItem); err != nil { |
| 171 | return fmt.Errorf("unmarshal cache item: %w", err) |
| 172 | } |
| 173 | |
| 174 | // Check if the item is expired |
| 175 | if cacheItem.TTL > 0 && time.Now().Unix()-cacheItem.Timestamp > cacheItem.TTL { |
| 176 | getCacheLogger().Debug("Cache item expired: %s", key) |
| 177 | // Item is expired, we'll handle deletion outside this transaction |
| 178 | return nil |
| 179 | } |
| 180 | |
| 181 | // Item is valid |
| 182 | found = true |
| 183 | |
| 184 | getCacheLogger().Debug("Cache hit for: %s", key) |
| 185 | |
| 186 | // Unmarshal the raw JSON directly into the destination (no double marshaling) |
| 187 | if err := json.Unmarshal(cacheItem.Data, dest); err != nil { |
| 188 | return fmt.Errorf("unmarshal into destination: %w", err) |
| 189 | } |
| 190 | |
| 191 | return nil |
| 192 | }) |
| 193 | }) |
| 194 | |
| 195 | // If the item was expired, delete it in a separate transaction |
| 196 | if err == nil && !found { |
| 197 | // We don't care about errors here, as it's just cleanup |
| 198 | _ = c.Delete(key) |
| 199 | } |
| 200 | |
| 201 | return found, err |
| 202 | } |
| 203 | |
| 204 | // Set stores data in the cache. |
| 205 | func (c *BadgerCache) Set(key string, data interface{}, ttl time.Duration) error { |