Sanntidsdeling av data i en API- lst verden What is event driven? - PowerPoint PPT Presentation

Sanntidsdeling av data i en API- løst verden

What is event driven? Wait Signal

+= (event) => you say; Business TimeSeries / Discreet • Truth of the system • DataPoints • Named intentionally • Measurements • Represents the domain • Consumer decides frequency language • Can be observed • Historical facts • Transient

Our road has been paved with…

Event Sourcing

Traditional Database BankAccount Id: 123 Owner: Jane Doe Balance: $10

Event Sourcing BankAccountOpened DepositPerformed OwnerChanged WithdrawalPerformed Id: 123 Id: 123 Id: 123 Id: 123 Owner: John Doe Amount: $20 NewOwner: Jane Doe Amount: $10

Event Store « Historical record »

Streams Account Details Account Ledger All DepositPerformed BankAccountOpened BankAccountOpened WithdrawalPerformed DepositPerformed OwnerChanged MoneyTransferred OwnerChanged WithdrawalPerformed MoneyTransferred

Positioning BankAccountOpened DepositPerformed OwnerChanged WithdrawalPerformed Id: 123 Id: 123 Id: 123 Id: 123 Owner: John Doe Amount: $20 NewOwner: Jane Doe Amount: $10 Processor C Processor A Processor B Position: 0 Position: 3 Position: 1

Restoring Objects BankAccountOpened Id: 123 Owner: John Doe Projects to BankAccount Id: 123 Owner: John Doe Balance: $0

Restoring Objects BankAccountOpened DepositPerformed Id: 123 Id: 123 Owner: John Doe Amount: $20 Projects to BankAccount Id: 123 Owner: John Doe Balance: $20

Restoring Objects BankAccountOpened DepositPerformed OwnerChanged Id: 123 Id: 123 Id: 123 Owner: John Doe Amount: $20 NewOwner: Jane Doe Projects to BankAccount Id: 123 Owner: Jane Doe Balance: $20

Restoring Objects BankAccountOpened DepositPerformed OwnerChanged WithdrawalPerformed Id: 123 Id: 123 Id: 123 Id: 123 Owner: John Doe Amount: $20 NewOwner: Jane Doe Amount: $10 Projects to BankAccount Id: 123 Owner: Jane Doe Balance: $10

Event Horizon

Microservices Microservice A Microservice B Frontend Frontend Backend Backend Storage Storage Fabric

Migrations BankAccountOpened Rename DebitBankAccountOpened { { Owner Owner } Default value Description }

Private vs public Other system All BankAccountOpened DepositPerformed OwnerChanged BalanceChanged WithdrawalPerformed MoneyTransferred

Event Discovery

Open events - interoperability

GDPR

Isolating PII Event in all stream PII storage BankAccountOpened { Firstname Lastname SocialSecurityNumber }

Isolating PII - streams Event in all stream PII mutable stream BankAccountOpened { Firstname Lastname SocialSecurityNumber }

SDK Runtime Your Code Event Handlers Microservice B Domain Event Transaction Microservice C Source Coordinator Event Horizon Microservice D Event Store Microservice A TimeSeries Event gRPC DataPoint Connector Observer Manager Source Event Horizon Event Store Microservice E Microservice F

Supert App / Portal External Application 1 Application 2 Legacy Systems Your Code Your Code Your Code SDK SDK SDK Runtime Runtime Connectors Runtime Fabric Read Event Read Read Event Event Cache Store Cache Store Cache Store Microservice A Microservice B Microservice A

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