Reliability & SLA
Uptime, latency, and data-freshness posture — stated honestly.
Current posture (default plans)
These are operational targets for Free, Starter, Pro, and Pro+ tiers. They are not contractual SLAs unless you are on an enterprise agreement.
| Dimension | Target | Notes |
|---|---|---|
| REST availability | 99.5%+ rolling 30-day | Monthly windows include planned maintenance. |
| WebSocket availability | 99.5%+ rolling 30-day | Reconnect logic in SDKs is expected on the client side. |
| End-to-end tick latency | < 100ms (venue → DataMaxi+ WebSocket client) | Measured for major CEX tick + funding-rate streams. |
| REST snapshot freshness | ≤ 1s for hot datasets (ticker, premium, funding) | Reference data (trading fees, wallet status) refreshes minutes-scale. |
| Aggregated dataset freshness | ≤ 3s for premium / cross-exchange spreads | Default product update frequency is 3 seconds; selectable up to 30s in the hosted app. |
| Liquidation feed | Bucketed history cached ~30s server-side | Live feed pushes per-event on WebSocket. |
Connection requirements
WebSocket keep-alive
WebSocket clients must send a PING every 30 minutes to keep the connection open. Missing pings cause server-side disconnect.
{ "method": "PING", "params": [], "id": 1 }
See WebSocket API › Ping for details.
Rate limits
REST API rate limit (default plans):
| Window | Requests per API key |
|---|---|
| 30 seconds | 20 |
Exceeding the limit returns HTTP 429. See Rate Limits for the per-tier table.
What we monitor
- Per-venue collector health — sequence-gap detection, reconnect counters, per-venue lag.
- Aggregator pipeline lag — time from raw tick → derived dataset publish.
- Edge latency — round-trip from public REST/WebSocket back to monitored probes.
- WebSocket fan-out backlog — slow-consumer detection.
We page on aggregator pipeline lag and venue feed loss. Status updates for major incidents are posted to our Telegram channel.
Enterprise SLAs
If you need a contractual SLA, dedicated capacity, custom datasets, or a tighter-than-default latency profile, reach out:
- Email — business@datamaxiplus.com
- Pricing page — datamaxiplus.com/pricing (form at the bottom routes to BD)
Typical enterprise terms cover:
- 99.9% rolling-monthly availability commitment with credit schedule.
- Named on-call channel (Telegram or Slack).
- Reserved REST/WebSocket capacity above the Pro+ default.
- Custom dataset additions (specific venues, custom intervals, bespoke aggregations).
- Direct VPN / private peering on request.
Honest caveats
A few things we want you to know going in:
- Free tier is best-effort. It's there for development and evaluation; please don't put production trading on the Free tier and then be surprised.
- Exchange outages propagate. If Binance is down, our Binance data is down — by definition. Cross-venue fallbacks help for derived datasets like premium, but a single-venue endpoint inherits the venue's uptime.
- Long-tail tokens have thinner coverage. A
BTC/USDTtick comes from every supported venue with the same fidelity. A new long-tail listing may only be on the venue(s) that list it. - Reference data is eventually-consistent. Trading fees, wallet status, and symbol metadata refresh on a schedule, not instantly. If you need real-time wallet status, talk to us.