cutover

A library to boost confidence when making code changes

Public version of Cutover MCP

Reconciles primary keys and compares column aggregates between the legacy table and the new warehouse, so a cutover that reports success while short 42 orders gets blocked instead of signed off.

Check DNS propagation of a record across 18 public resolvers worldwide — parallel queries, consensus detection, watch mode, and CI-friendly exit codes. Python CLI, zero config.

Coordinate Vitess Online DDL across every shard of a keyspace. Submits with --postpone-completion, holds a global cutover barrier until all shards report ready and none is lagging, then completes them together — turning per-shard schema skew into zero. Live progress, throttle guard, revert, resumable journal, and a deterministic cluster simulator.

API platform info for migration

Platform-neutral implementation-readiness foundation: requirements, eight synthetic validation cases, readiness, rollback, and support handoff. Related Atlassian work: IRW.

Risk framework for large cloud migrations: threat model, rollback criteria, SEV model, go/no-go gates, communication plans.

Open-source playbook generator for ERP and infrastructure cutovers — go/no-go checkpoints, dependency mapping, rollback triggers

Model cutover dependencies, execution waves, blockers, critical paths, controls, and evidence as a versionable graph.

A practical framework for planning and executing cutover activities in high-criticality SAP S/4HANA programs, built from real-world war room experience.

Reference implementation of zero-downtime SQL Server consolidation using strangler-fig, dual-write, and row-checksum reconciliation. .NET 10, local-first via Docker, Azure-ready.