data-migration-best-practices SKILL.md skillA
data-migration-best-practices from okhp3/skillz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add okhp3/skillz/data-migration-best-practices@git:20260919.b8e278dPins git:20260919.b8e278d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- okhp3/skillz
- Path
community/data-migration-best-practices/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260919.b8e278d, committed Sep 19, 2026
- First version recorded
- Aug 28, 2026
- Size
- 4,948 bytes
- Repository stars
- 3
- License
- MIT
Operational data migration guidance. Use when moving or transforming persisted data between schemas, databases, services, or storage technologies; running large backfills; applying expand-and-contract schema changes; combining snapshots with live CDC/events; designing resumable batches and checkpoints; reconciling source and target; or planning cutover, rollback, and repair.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Data Migration Best Practices Treat migration as a temporary production system with explicit correctness, capacity, observability, and retirement criteria. It changes persisted behavior and is not automatically a refactoring. ## Workflow 1. Define source authority, target contract, transformations, invariants, data classification, and tolerated downtime/staleness. 2. Choose a stable snapshot boundary or high-water mark and start durable capture of live changes before they can escape the snapshot. 3. Expand the target schema compatibly; keep old and new application versions interoperable during rolling deployment. 4. Backfill in bounded, idempotent, resumable batches with deterministic progress and explicit bad-row handling. 5. Apply captured deltas without allowing stale snapshot data to overwrite newer writes. 6. Reconcile availability, counts, identities, values, and domain invariants against a declared watermark. 7. Cut over only when freshness and discrepancy gates pass; monitor and retain a reversal or forward-repair path. 8. Contract old fields, code paths, capture infrastructure, and temporary permissions only after an observation window. ## Decision Rules …
Read the whole file at its exact version.
How to install
mdr add okhp3/skillz/data-migration-best-practices@sha256:e4403a992e0f718dThe line at the top of this page pins the label git:20260919.b8e278d, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4qcddp2fqcc4pce4)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 28, 2026 and Sep 19, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.b8e278d latest | 2026-09-19 | b8e278d | 4,948 B | A | view · diff |
| git:20260828.866dec6 | 2026-08-28 | 866dec6 | 4,459 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4948 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
okhp3/skillz · 3 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4qcddp2fqcc4pce4 GET https://markdownregistry.com/api/v1/resolve?ref=okhp3/skillz/data-migration-best-practices GET https://markdownregistry.com/api/v1/blob/e4403a992e0f718d7a4c705b817ea41ac1367b93e403942b981da7701a537851
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.