Event Sourcing Patterns

• Pending Creation This example of pending creation is a user service that enforces unique email address.

• Process Manager This example of a process manager is a ledger that enforces a positive balance.

• Single Current Aggregate This example of a single active aggregate is a billing period that accrues charges.

• Two Phase Commit This example of two phase commit is a process manager that matches payments to expectations.

• Fat Events This example of fat events is a user service that contains all user properties on all events.