Celluster™ Upgrades & Migrations

Clone → reroute → decay, in milliseconds.
Upgrades • Migrations • Zero Downtime
In Celluster, upgrades and migrations aren’t projects rather they’re reflexes.

Traditional upgrades depend on bridges, gateways, draining windows, and controller scripts. Celluster keeps user intent alive at runtime, so upgrades and migrations become a reflex: clone, reroute, decay, migrate, in milliseconds.

Make-before-break is built in: the new Cell comes online, begins handling traffic, and only then does the old Cell fade away.

See the Reflex Flow Revolutionary, Yet Rooted in Reality
Cartoon comparing traditional bridge-based upgrades with Celluster reflex clone–reroute–decay migrations.
Left: bridges, gateways, and draining windows. Right: Reflex Cells calmly clone → reroute → decay. Upgrades as choreography, not construction.

Reflex Upgrades & Migrations

Intent burns. Cells move. Clients keep flowing.

A Celluster upgrade or migration starts with intent, not with a migration runbook:

  • Intent-driven burn — a user declares the upgrade or migration intent in the manifest.
  • Clone — the runtime spawns a fresh Cell with updated image, policy, and thresholds.
  • State-aware transition — the new Cell learns enough live state to continue handling ongoing work.
  • Reroute — traffic is steered to the new Cell while the old one is still available.
  • Decay — the original Cell is gracefully wound down after active work completes.
  • Zone-wise migration — the same pattern applies when moving across zones or sites.
Result: upgrades and migrations complete in milliseconds, not minutes, with no visible “restart moment” for clients.

Session Continuity

Move the workload, not the problem.

The natural question is: “Can you really move a live workload without dropping connections?”

Celluster is designed so that migrations are session-conscious:

  • Clone-first behavior.
    New Cells come online before old ones shut down. There is always somewhere for traffic to go.
  • Stable, intent-based endpoints.
    Clients talk to semantic endpoints and tied to intent and zone, instead of brittle, one-off placements.
  • State-aware handover.
    The runtime coordinates handover so that existing work can continue on the new Cell without forcing reconnect storms.
  • Graceful decay, not instant shutdown.
    Old Cells only retire once ongoing work has drained or been handed off.
From the client’s perspective, the application just keeps running — even while Cells are being upgraded or moved.

Traditional Bridges vs Reflex Runtime

From draining windows to runtime verbs.

In traditional stacks, moving a workload is an operations event:

  • Build or configure bridges, gateways, and overlays.
  • Schedule draining windows and maintenance pages.
  • Re-wire routing, DNS, and security policies.
  • Hope no long-lived sessions or hidden dependencies break.

In Celluster, upgrades and migrations are built into the runtime:

  • Every Cell is reflex-aware — clone, reroute, decay, and migrate are runtime capabilities, not ad-hoc scripts.
  • Upgrades are new intents — you describe the outcome, the runtime handles the choreography.
  • Adaptation is continuous and distributed — no single controller has to coordinate every move.

Bridges and controllers become implementation details, not the main event.

Revolutionary, Yet Rooted in Reality

New choreography, familiar foundations.

Celluster’s migration story can sound 10 years ahead because it removes work teams have accepted as “just how it is.” Underneath, it builds on ideas that already exist in modern infrastructure:

  • Blue/green and canary-style rollouts — clone-first, shift traffic gradually.
  • Stable service endpoints — clients speak to logical identities, not fragile placements.
  • Stateful transitions — careful handovers to keep live work flowing.
  • Distributed coordination — no single choke point deciding every move.
The innovation is not a new low-level mechanism. It’s treating upgrades and migrations as first-class reflexes in the runtime, instead of one-off projects for humans and scripts.