Modules

This library contains several modules that implement event sourcing in Python.

• domain — Domain models
  • Aggregates in DDD
  • Event-sourced aggregates
    • Domain events
    • Aggregate events
    • Aggregate base class
    • Creating new aggregates
    • Triggering subsequent events
    • Collecting pending events
    • Simple example
    • Namespaced IDs
    • Alternative mutator function
  • Declarative syntax
    • Create new aggregate by calling the aggregate class directly
    • Using the init method to define the created event class
    • Dataclass-style init methods
    • Declaring the created event class name
    • Defining the aggregate ID
    • The @event decorator
    • Inferring the event class name from the method name
    • Using an explicitly defined event class
    • The World aggregate class revisited
    • The Page and Index aggregates revisited
    • Non-trivial command methods
    • Raising exceptions in the body of decorated methods
    • The @aggregate decorator
  • Timestamp timezones
  • Initial version number
  • Topic strings
    • Registering old topics
  • Versioning
  • Snapshots
  • Notes
  • Classes
• application — Applications
  • Domain-driven design
  • Application objects
  • Basic example
  • Application environment
  • Repository
  • Notification log
    • Outbox pattern
    • Selecting notifications from the log
    • Linked list of sections
  • Snapshotting
    • Enabling snapshotting
    • Taking snapshots
    • Automatic snapshotting
  • Configuring persistence
  • Registering custom transcodings
  • Encryption and compression
  • Saving multiple aggregates
  • Classes
• persistence — Infrastructure
  • Transcoder
  • Transcodings
  • Stored event objects
  • Mapper
  • Encryption
  • Compression
  • Notification objects
  • Tracking objects
  • Recorder
  • Event store
  • Infrastructure factory
  • SQLite
  • PostgreSQL
  • Classes
• system — Event-driven systems
  • System of applications
  • Single-threaded runner
  • Multi-threaded runner
  • Classes
• interface — Interface
  • Classes