Calculate Time-To-Live values for DNS, HTTP cache, Redis, CDN, JWT, and sessions. Convert units and see expiry times.
| Duration | Seconds | Use Case |
|---|---|---|
| 30 seconds | 30 | Health checks, real-time data |
| 5 minutes | 300 | API rate limit windows |
| 15 minutes | 900 | Short-lived sessions, CSRF tokens |
| 1 hour | 3,600 | Access tokens, DNS propagation |
| 24 hours | 86,400 | Daily caches, DNS records |
| 7 days | 604,800 | Refresh tokens, session cookies |
| 30 days | 2,592,000 | Long-lived caches, CDN assets |
| 1 year | 31,536,000 | Immutable assets, HSTS max-age |