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.

How fast is rollback for m-03?

The runbook is a command plus a named owner. There is no wait for a weekly change freeze.

Is transit the default path?

No. Peering in Miami is default; transit to São Paulo is overflow and is billed that way.

Service mesh without turning every hop into a mystery

East-west traffic inside a region uses a small mesh: retries, timeouts and identities, with traces that operators can read.

Mesh: Why it matters on this continent

Design for Mesh on letter M starts in São Paulo (GRU). Runbook m-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.

Mesh: How XServ runs it day to day

Probes for Mesh (m-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.

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: A note on cost and transit

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 design M-01

Mesh probe M-02

Mesh policy M-03

Mesh capacity M-04

Mesh handoff M-05

Mesh rollback M-06

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.

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.