rights reserved. Event-driven Architecture Event Broker Increase resiliency and agility / extensibility by reducing coupling between components, using asynchronous communications via events. Events
rights reserved. Rule Matching B A S I C S • String: • Prefix / suffix: • Anything but (not): • Numeric: • Exists: "source": "source": "suffix": "detail": "state": "anything-but": "numeric" "<" "exists":
rights reserved. Rule Matching A D V A N C E D • And: • Or (values): • Or (global): { "source": "prefix": , "detail": { "state": [ { "anything-but": "initializing" } ] } } "source": [ ", " ] "$or": [ , ]
rights reserved. Retries and Dead Letter Queue (DLQ) Event Bus Event Rules Events Access Denied Timeout Throttled Retry Policy: - Up to 185 attempts - Up to 24 hours* DLQ DLQ DLQ *: may be reached before the 185 attempts because of back-off’s jitter
rights reserved. S3 Event Notifications with EventBridge Benefits: Ø Multi-destinations Ø More targets / less code Ø Advanced filtering (prefix, sufix, object size, time range…) Amazon S3 Lambda function Lambda function Lambda function ECS Task EventBridge Event Bus
rights reserved. Observability const { EventBridgeClient, PutEventsCommand } = require('@aws-sdk/client-eventbridge'); const AWSXRay = require('aws-xray-sdk-core'); const eventBridgeClient = AWSXRay.captureAWSv3Client(new EventBridgeClient()); exports.handler = async (event) => { const ebEvent = { Entries: [{ Detail: JSON.stringify({ ... }), DetailType: 'Request', Source: 'com.mycompany.myapp', }] } const command = new PutEventsCommand(ebEvent); const result = await eventBridgeClient.send(command); } TraceHeader: 'Root=1-5759e988-bd862e3fe1be46a994272793;Sampled=1' X-Ray SDK automatically populates X-Amzn-Trace-Id in HTTP Header for all invocation targets. You can manually add the TraceHeader field in your entries for the PutEvents… ⚠ it overrides the HTTP Header ⚠ trace id is not available in the event payload
rights reserved. API Destination Event Filter Connection Rule Target (API Destination) Endpoint HTTP SaaS Webhook Others On Premise Applications API Partner API
rights reserved. API Destination – Connection ****** Basic Auth User / password Oauth Client ID Client secret Auth endpoint API Key Key / value Event Filter Connection Rule Target (API Destination) Endpoint HTTP Credentials stored in Secrets Manager Webhook Others On Premise Applications API SaaS Partner API
rights reserved. API Destination – Connection ****** Basic Auth User / password Oauth Client ID Client secret Auth endpoint API Key Key / value Event Filter Connection Rule Target (API Destination) Endpoint HTTP Also used in Step Functions Webhook Others On Premise Applications API SaaS Partner API
rights reserved. Catalog of events? Order Service Payment Service Inventory Service Search Service Users Service Billing Service Delivery Service Loyalty Service Event Bus … … ?
rights reserved. What do these services have in common? Ø The only way to consume them is to do polling or use Lambda (Event Source Mapping), which means writing code. Amazon SQS Amazon Kinesis Data Streams Amazon DynamoDB Amazon MSK Amazon MQ Self-managed Apache Kafka Decreased development velocity Increased risk of bugs Increased complexity Increased operational load Inefficient polling High total cost of ownership
rights reserved. How to implement the following use cases? Amazon SQS AWS Step Functions Process an SQS queue with a Step Function: Amazon DynamoDB Stream EventBridge Event Bus Step Functions API Destination SSM Run Command …. Publish DynamoDB record changes to multiple AWS services Amazon Kinesis Data Streams 1 Amazon Kinesis Data Streams 2 Amazon Kinesis Data Streams Split multiplexed data streams into multiple domain streams
rights reserved. Cross-account & cross-region capabilities Account 1 Region A Region A Producer Event Bus Central Event Bus Rule Rule Account 3 Cross-region / same account Rule Region B Event Bus Cross-account / same region Rule Cross-account / cross-region Account 2 Region C Event Bus Rule Cloudwatch Logs Consumer
rights reserved. Global endpoints Primary Region (us-east-1) Global Endpoint Alarm Route53 Secondary Region (us-west-2) Route53 Health Check Amazon EventBridge Global Endpoint (hb3wfg53j8.ne) PutEvents Custom event bus Amazon EventBridge Cross Region Replication (Optional) Custom event bus Amazon EventBridge Producer Consumers Consumers Global Endpoint Managed rule client.put_events( EndpointId="hb3wfg53j8.ne", Entries=[...] )
rights reserved. Global endpoints Primary Region (us-east-1) Global Endpoint Alarm Route53 Secondary Region (us-west-2) Route53 Health Check Amazon EventBridge Global Endpoint (hb3wfg53j8.ne) PutEvents Cross Region Replication (Optional) Custom event bus Amazon EventBridge Producer Consumers Consumers Global Endpoint Managed rule IngestionToInvocationStartLatency alarm failover client.put_events( EndpointId="hb3wfg53j8.ne", Entries=[...] ) Archive
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