# Message Handling # with Boolean Algebra  Ben Deane / CppCon / 2024-09-16 ## Alternative Title "The Unreasonable Unreasonable Effectiveness of Boolean Algebra in Software Design, Showing the Particular Application of a Message Handling Library, with an Excursion into the Roots of Programming" ## Frontmatter No AI/LLM was this talk is about The workings of a message-handling library. • How messages and the fields in them are specified. • Efficiently identifying (with matchers) a message coming off the wire. • The role of

24 Message Redelivery and Undelivered Messages 1.25 Message Expiry 1.26 Large Messages 1.27 Paging 1.28 Queue Attributes 1.29 Scheduled Messages 1.30 Last-Value Queues 1.31 Message Grouping Client Reconnection and Session Reattachment 1.38 Diverting and Splitting Message Flows 1.39 Core Bridges 1.40 Duplicate Message Detection 1.41 Clusters 1.42 High Availability and Failover 1.43 performance, clustered, asynchronous messaging system. - Apache ActiveMQ Artemis is an example of Message Oriented Middleware (MoM). For a description of MoMs and other messaging concepts please see the

24 Message Redelivery and Undelivered Messages 1.25 Message Expiry 1.26 Large Messages 1.27 Paging 1.28 Queue Attributes 1.29 Scheduled Messages 1.30 Last-Value Queues 1.31 Message Grouping Client Reconnection and Session Reattachment 1.38 Diverting and Splitting Message Flows 1.39 Core Bridges 1.40 Duplicate Message Detection 1.41 Clusters 1.42 High Availability and Failover 1.43 performance, clustered, asynchronous messaging system. - Apache ActiveMQ Artemis is an example of Message Oriented Middleware (MoM). For a description of MoMs and other messaging concepts please see the

commits 27. Message Redelivery and Undelivered Messages 28. Message Expiry 29. Large Messages 30. Paging 31. Queue Attributes 32. Scheduled Messages 33. Last-Value Queues 34. Message Grouping Client Reconnection and Session Reattachment 41. Diverting and Splitting Message Flows 42. Core Bridges 43. Duplicate Message Detection 44. Clusters 45. High Availability and Failover 46. Graceful performance, clustered, asynchronous messaging system. - Apache ActiveMQ Artemis is an example of Message Oriented Middleware (MoM). For a description of MoMs and other messaging concepts please see the

26 Message Redelivery and Undelivered Messages 1.27 Message Expiry 1.28 Large Messages 1.29 Paging 1.30 Queue Attributes 1.31 Scheduled Messages 1.32 Last-Value Queues 1.33 Message Grouping Management 1.36 Security 1.37 Broker Plugins 1.38 Resource Limits 1.39 The JMS Bridge 1.40 Client Reconnection and Session Reattachment 1.41 Diverting and Splitting Message Flows 1.42 Core Bridges Bridges 1.43 Duplicate Message Detection 1.44 Clusters 1.45 High Availability and Failover 1.46 Graceful Server Shutdown 1.47 Libaio Native Libraries 1.48 Thread management 1.49 Logging 1.50

Isolation 1.29 Detecting Broker Issues (Critical Analysis) 1.30 Resource Manager Configuration 1.31 Flow Control 1.32 Guarantees of sends and commits 1.33 Message Redelivery and Undelivered Messages 1.34 Message Expiry 1.35 Large Messages 1.36 Paging 1.37 Scheduled Messages 1.38 Last-Value Queues 1.39 Ring Queues 1.40 Retroactive Addresses 1.41 Exclusive Queues 1.42 Message Grouping Masking Passwords 1.50 Broker Plugins 1.51 Resource Limits 1.52 The JMS Bridge 1.53 Client Reconnection and Session Reattachment 1.54 Diverting and Splitting Message Flows 1.55 Core Bridges

Isolation 1.29 Detecting Broker Issues (Critical Analysis) 1.30 Resource Manager Configuration 1.31 Flow Control 1.32 Guarantees of sends and commits 1.33 Message Redelivery and Undelivered Messages 1.34 Message Expiry 1.35 Large Messages 1.36 Paging 1.37 Scheduled Messages 1.38 Last-Value Queues 1.39 Ring Queues 1.40 Retroactive Addresses 1.41 Exclusive Queues 1.42 Message Grouping Masking Passwords 1.50 Broker Plugins 1.51 Resource Limits 1.52 The JMS Bridge 1.53 Client Reconnection and Session Reattachment 1.54 Diverting and Splitting Message Flows 1.55 Core Bridges

Server 1.8 Upgrading 1.9 Address Model 1.10 Protocols and Interoperability 1.11 AMQP 1.12 Broker Connections 1.12.1 MQTT 1.13 STOMP 1.14 OpenWire 1.15 Core 1.16 Mapping JMS Concepts to Detecting Broker Issues (Critical Analysis) 1.30 Resource Manager Configuration 1.31 Flow Control 1.32 Guarantees of sends and commits 1.33 Message Redelivery and Undelivered Messages 1.34 Message Expiry 1.42 Message Grouping 1.43 Consumer Priority 1.44 Extra Acknowledge Modes 1.45 Management 1.46 Management Console 1.47 Metrics 1.48 Security 1.49 Masking Passwords 1.50 Broker Plugins

Bridges and routing ..... 8 4. Core Architecture ..... 9 4.1. Standalone Broker ..... 10 4.2. Embedded Broker ..... 10 4.3. Integrated with a Java/Jakarta EE application server ..... 5.2. Configuring Acceptors ..... 13 6. AMQP ..... 15 6.1. Examples ..... 15 6.2. Message Conversions ..... 15 6.3. Intercepting and changing messages ..... 16 6.4. AMQP and security Transactions ..... 17 6.8. AMQP scheduling message delivery ..... 17 6.9. DLQ and Expiry transfer ..... 17 6.10. Filtering on Message Annotations ..... 18 6.11. Configuring AMQP

Bridges and routing ..... 8 4. Core Architecture ..... 9 4.1. Standalone Broker ..... 10 4.2. Embedded Broker ..... 10 4.3. Integrated with a Java/Jakarta EE application server ..... 5.2. Configuring Acceptors ..... 13 6. AMQP ..... 15 6.1. Examples ..... 15 6.2. Message Conversions ..... 15 6.3. Intercepting and changing messages ..... 16 6.4. AMQP and security Transactions ..... 17 6.8. AMQP scheduling message delivery ..... 17 6.9. DLQ and Expiry transfer ..... 17 6.10. Filtering on Message Annotations ..... 18 6.11. Configuring AMQP