Does Mesh on letter M share fate with other letters?

The control plane is shared. Data-plane queues for Mesh stay isolated, so incident m-01 cannot drain neighbor letters.

Where is Mesh measured first?

From Santiago (SCL) toward Bogotá. A global average is not an SLO for letter M.

Mesh: headers in São Paulo (GRU) · M-09

Runbook M-09 for Mesh in São Paulo (GRU). Marker xserv-m-21dce14d5b68. This page covers headers for LATAM operators, not a worldwide average.

Mesh: What operators should measure

Policy for Mesh is versioned as m-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.

Mesh: Failure modes we actually see

Capacity notes for m-04 assume rainy-season power in Miami and festival peaks toward São Paulo. The failure we actually see is a single uplink, not a cartoon partition of the whole continent. Spare ports and a second provider sit on the same runbook.

Mesh: How this letter ties to the rest

Handoff from letter M Mesh into the rest of the platform uses the same request IDs as the gateway. Runbook m-05 names who accepts the ticket after São Paulo pages out. Santiago does not silently inherit the incident.

Mesh handoff M-05

Mesh rollback M-06

Rollback for m-06 is a documented command, not a hope. Transit is billed as backup while Mesh prefers peering in Santiago. If cost spikes, the runbook cuts overflow to Bogotá before touching customer prefixes.

Mesh peering M-07

Peering for Mesh (m-07) prefers the IX fabric that already carries last-mile ISPs in Bogotá. Session counts and prefix limits are on the same page as the Miami backup path.

Mesh cache M-08

Cache rules for Mesh on m-08 keep language-correct objects near Miami. São Paulo is a sibling cache, not an origin. TTLs are short enough that a bad asset does not live through a weekend.