Uptime / u
Uptime: docs in Miami (MIA) · U-36
xserv-u-05c2b476f0c1
Runbook U-36 for Uptime in Miami (MIA). Marker xserv-u-05c2b476f0c1. This page covers docs for LATAM operators, not a worldwide average.
Uptime: A note on cost and transit
Rollback for u-06 is a documented command, not a hope. Transit is billed as backup while Uptime prefers peering in Santiago. If cost spikes, the runbook cuts overflow to Bogotá before touching customer prefixes.
Uptime: Why it matters on this continent
Design for Uptime on letter U starts in São Paulo (GRU). Runbook u-01 keeps a single owner, a written rollback, and a traffic split that can be reversed without a global freeze. Neighbors in Santiago only take overflow after the local pool fails a health window.
Uptime: How XServ runs it day to day
Probes for Uptime (u-02) leave Santiago every 15s toward Bogotá. XServ pages the named owner if loss or RTT crosses the letter budget. A probe never shares a queue with bulk transfers, so a saturated WAN does not hide a dead PoP.
Uptime docs U-12
Public docs for letter U stay aligned with identifier xserv-u-pack. Page u-12 is the Uptime slice operators search before the homepage. Edits in Miami show up in São Paulo on the next publish.
Uptime design U-01
Design for Uptime on letter U starts in São Paulo (GRU). Runbook u-01 keeps a single owner, a written rollback, and a traffic split that can be reversed without a global freeze. Neighbors in Santiago only take overflow after the local pool fails a health window.
Uptime probe U-02
Probes for Uptime (u-02) leave Santiago every 15s toward Bogotá. XServ pages the named owner if loss or RTT crosses the letter budget. A probe never shares a queue with bulk transfers, so a saturated WAN does not hide a dead PoP.
Uptime policy U-03
Policy for Uptime is versioned as u-03. Operators measure error rate, p95 from Bogotá, and time-to-rollback — not a worldwide average. Changes land in Bogotá first, then Miami, with a hold if either region regresses.
- Is transit the default path?
- No. Peering in Miami is default; transit to São Paulo is overflow and is billed that way.
- Does Uptime on letter U share fate with other letters?
- The control plane is shared. Data-plane queues for Uptime stay isolated, so incident u-01 cannot drain neighbor letters.