Category of Data
| Term | Access Frequency | Latency | Storage Layer | Typical Use Case |
|---|---|---|---|---|
| Hot Data | Very frequent | Very low | Cache, RAM, CPU cache | Recently accessed user sessions, counters |
| Cold Data | Rare/infrequent | High | Disk, archive, remote | Old logs, user history, old orders |
| Persisted Data | Durable, long-term | Varies | Disk, SSD, databases | Durable state, critical records |