1. **[NEW]** ttl available, e.g. cached(ttl=5) => cache will be invalidated after 5 seconds 2. Performance optimization
0.0.2
1. **[NEW]** max_items available, e.g. cached(max_items=100) => restrict the max volume of cache to 100 sets of data; when fully occupied, the data first came will be overwritten 2. Performance optimization 3. Better examples 4. Minor bug fixes