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

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Mar 11, 2023 360 likes •669 views

Sanntidsdeling av data i en API- lst verden What is event driven? Wait Signal += (event) => you say; Business TimeSeries / Discreet Truth of the system DataPoints Named intentionally Measurements Represents the domain

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Sanntidsdeling av data i en API-løst verden

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What is event driven?

Wait Signal

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+= (event) => you say;

Business

Truth of the system
Named intentionally
Represents the domain

language

Historical facts

TimeSeries / Discreet

DataPoints
Measurements
Consumer decides frequency
Can be observed
Transient

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Our road has been paved with…

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Event Sourcing

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Traditional Database

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

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Event Sourcing

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

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Event Store

«Historical record»

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Streams

All

BankAccountOpened DepositPerformed OwnerChanged WithdrawalPerformed MoneyTransferred

Account Details

BankAccountOpened OwnerChanged

Account Ledger

DepositPerformed WithdrawalPerformed MoneyTransferred

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Positioning

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

Processor A Position: 3 Processor B Position: 1 Processor C Position: 0

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Restoring Objects

BankAccountOpened Id: 123 Owner: John Doe

Projects to

BankAccount Id: 123 Owner: John Doe Balance: $0

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Restoring Objects

BankAccountOpened Id: 123 Owner: John Doe DepositPerformed Id: 123 Amount: $20

Projects to

BankAccount Id: 123 Owner: John Doe Balance: $20

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Restoring Objects

BankAccountOpened Id: 123 Owner: John Doe DepositPerformed Id: 123 Amount: $20 OwnerChanged Id: 123 NewOwner: Jane Doe

Projects to

BankAccount Id: 123 Owner: Jane Doe Balance: $20

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Restoring Objects

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

Projects to

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

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Event Horizon

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Microservices

Backend

Storage

Frontend

Microservice A

Backend

Storage

Frontend

Microservice B Fabric

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Migrations

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

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Private vs public

BankAccountOpened DepositPerformed OwnerChanged WithdrawalPerformed MoneyTransferred BalanceChanged

All Other system

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Event Discovery

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Open events - interoperability

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GDPR

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Isolating PII

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

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Isolating PII - streams

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

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Microservice F Microservice E Microservice A

gRPC Event Source Connector

Domain TimeSeries Your Code SDK Runtime

Event Store Transaction Coordinator Event Horizon Microservice B Event Handlers Microservice C Microservice D

DataPoint Manager

Observer Event Source Event Horizon Event Store

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Application 1 Application 2

Microservice A

Your Code SDK Runtime

Supert App / Portal

Connectors

External

Legacy Systems

Microservice A

Your Code SDK Runtime

Read Cache Event Store

Microservice B

Your Code SDK Runtime

Read Cache Event Store Read Cache Event Store

Fabric

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