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Free Migration Guide

Migration from [source] to [target]

Overview Prerequisites Pre-Migration Checklist Migration Steps Data Validation Rollback Procedure Post-Migration

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Migration Guide

Use this template to migration from [source] to [target].

Template Metadata

Field	Details
Category	Engineering
Owner	[Team or owner]
Version	[Version number]
Effective Date	[Date]
Review Cycle	[Monthly / Quarterly / Annual / Event-based]
Status	[Draft / In Review / Approved]

Overview

What's being migrated, from where, and to where.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Prerequisites

Required access, tools, and preparation.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Pre-Migration Checklist

Checklist of items to verify before starting.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Migration Steps

Detailed, numbered steps.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Data Validation

How to verify data integrity after migration.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Rollback Procedure

Exact steps to revert if needed.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Post-Migration

Cleanup, monitoring, and validation. Use code blocks for commands. Include estimated timing.

Item	Details	Owner	Status
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]
[Item or requirement]	[Describe the relevant detail, evidence, or decision]	[Owner]	[Open / Complete]

Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

Review and Signoff

Document review conclusions, approvals, unresolved items, and next review date.

Role	Name	Date	Notes
Preparer	[Name]	[Date]	[Notes]
Reviewer	[Name]	[Date]	[Notes]
Approver	[Name]	[Date]	[Notes]

Template Structure

What the Migration Guide Includes

Use this engineering template as a starting point, then customize each section to match your internal workflow, evidence, and signoff needs.

1

Overview

What's being migrated, from where, and to where.

2

Prerequisites

Required access, tools, and preparation.

3

Pre-Migration Checklist

Checklist of items to verify before starting.

4

Migration Steps

Detailed, numbered steps.

5

Data Validation

How to verify data integrity after migration.

6

Rollback Procedure

Exact steps to revert if needed.

7

Post-Migration

Cleanup, monitoring, and validation. Use code blocks for commands. Include estimated timing.

Recommended Structure

Write a Migration Guide. Structure with:

Overview

What's being migrated, from where, and to where.

Prerequisites

Required access, tools, and preparation.

Pre-Migration Checklist

Checklist of items to verify before starting.

Migration Steps

Detailed, numbered steps.

Data Validation

How to verify data integrity after migration.

Rollback Procedure

Exact steps to revert if needed.

Post-Migration

Cleanup, monitoring, and validation.

Use code blocks for commands. Include estimated timing.

Example Filled Template

Migration Guide: MongoDB → PostgreSQL

Overview

Migrating the user service data store from MongoDB 6.0 to PostgreSQL 16. This affects ~2.3M user records and 12 collections being mapped to relational tables.

Estimated Duration: 4 hours (2h migration + 2h validation) Scheduled Window: Saturday 2026-02-22, 02:00-06:00 UTC

Prerequisites

[ ] PostgreSQL 16 target database provisioned
[ ] pgloader v3.6+ installed on migration host
[ ] Read access to MongoDB production replica
[ ] Write access to PostgreSQL target
[ ] Schema migration scripts reviewed and tested on staging

Pre-Migration Checklist

[ ] MongoDB backup verified (less than 1 hour old)
[ ] PostgreSQL schema applied (./scripts/apply_schema.sql)
[ ] Feature flag USE_POSTGRES_USERS ready to toggle
[ ] Monitoring dashboards open: DB connections, error rates, latency
[ ] Rollback runbook reviewed by on-call engineer

Migration Steps

Step 1: Export from MongoDB (est. 45 min)

mongodump --uri="mongodb://replica.internal:27017/userdb" \
--out=/migration/dump \
--readPreference=secondaryPreferred

Step 2: Transform and Load (est. 60 min)

python scripts/transform_and_load.py \
--source /migration/dump/userdb \
--target "postgresql://migration@pg.internal/userdb" \
--batch-size 10000

Step 3: Validate Record Counts

python scripts/validate_counts.py
# Expected output: "All 12 collections match. Total records: 2,341,892"

Rollback Procedure

Toggle feature flag USE_POSTGRES_USERS to false
Restart user service pods: kubectl rollout restart deploy/user-service
Verify traffic is hitting MongoDB via connection metrics
Keep PostgreSQL data intact for investigation

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Template FAQ

Migration Guide FAQ

Common questions about using and generating a migration Guide.

Using This Template

Q: What is a migration Guide?

A: A migration Guide is a structured document for migration from [source] to [target].

Q: Can I download this migration Guide as Word or PDF?

A: Yes. This page includes free downloads in DOCX, PDF, and Markdown formats so you can edit, share, or import the template into your documentation system.

Q: Can Docsie generate this from a video?

A: Yes. Upload a process walkthrough, training recording, or screen capture to Docsie, then use this template structure to generate a first draft automatically.