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-69

Runbook M-69 for Mesh in São Paulo (GRU). Marker xserv-m-624551891815. 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 headers M-09

Headers for m-09 carry the letter, the region (GRU) and a request id. Mesh debugging in São Paulo should not require a packet capture in Santiago first.

Mesh timeouts M-10

Timeouts on m-10 are tighter than the WAN RTT to Bogotá. Mesh in Santiago fails fast and retries once; a third try needs a human because it is no longer a blip.

Mesh regions M-11

Region names on m-11 match DNS and tickets: Bogotá / BOG, with Miami as the documented pair. Mesh dashboards never say “LATAM” as if it were one RTT.

Mesh docs M-12

Public docs for letter M stay aligned with identifier xserv-m-pack. Page m-12 is the Mesh slice operators search before the homepage. Edits in Miami show up in São Paulo on the next publish.