Versioning in an Event Sourced System
Versioning in an Event Sourced System
About the Book
Table of Contents
-
Status
- Goals
- Feedback
- Status
- Why Version?
-
Why can’t I update an event?
- Immutability
- Consumers
- Audit
- Worms
- Crime
-
Basic Type Based Versioning
- Getting Started
- Define a Version of an Event
- Double Write
- But…
-
Weak Schema
- Mapping
- Wrapper
- Overall Considerations
-
Negotiation
- Atom
- Move Negotiation Forward
- How to Translate
- Use with Structural Data
-
General Versioning Concerns
- Versioning of Behaviour
- Changing Semantic Meaning
- Snapshots
- Avoid ‘And’
-
Whoops, I Did It Again
- Accountants Use Pens
- Types of Compensating Actions
- How Do I Find What Needs Fixing?
- More Complex Example
- But I Really Screwed Up
-
Copy and Replace
- Simple Copy-Replace
- Simple>
- With a System Live
- Stream Boundaries are Wrong
- Changing Stream Boundaries on a Running System
-
Cheating
- Two Aggregates, One Stream
- One Aggregate, Two Streams
- Copy-Transform
- Versioning Bankrupty
-
Internal vs External Models
- External Integrations
- Granularity
- Rate of Change
- How to Implement
- Summary
-
Versioning Process Managers
- Procees Managers
- Basic Versioning
- Upcasting State
- Take Over
- Warning
Causes Supported
Code Club
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