Reactive APIs using Muon
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RPC leads to many poor design choices. See how the Muon project can help you build fully reactive, message based APIs instead, and how that can improve your system design and performance.
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Reactive APIs using Muon
- 1. Reactive APIsReactive APIs usingusing MancJS – 2017-11-01
- 2. David Dawson me@daviddawson.me Microservices | JVM | IoT consultant Organiser, London Microservices User Group, Founder, Muon Project – http://muoncore.io http://daviddawson.me
- 5. Isolation
- 6. Aspiration
- 19. Orders
- 26. Orders Product Users Auth Fulfillment Order X Default Product Name: £12 Default Product Name: £99 Default Product Name: £77 Shipping Date: No idea.
- 27. Orders Product Users Auth Fulfillment This Service is broken by its dependencies breaking
- 28. Orders Product Users Auth Fulfillment 99.999% uptime for each service 5 services in a web ~25 mins/ year downtime. Guaranteed
- 30. FragileFragile
- 32. FragileFragile Higher LatencyHigher Latency Data is Relational...Data is Relational...
- 33. FragileFragile Higher LatencyHigher Latency Data is Relational...Data is Relational... .... Inner Join over HTTP.... Inner Join over HTTP
- 34. RPC APIs + MicroservicesRPC APIs + Microservices == Data SilosData Silos
- 35. :-(:-(
- 36. Reactive
- 44. Reactive System
- 46. Designing Reactive Systems With Great Power.... ....comes great responsibility
- 47. Using Data Your data is here
- 48. Using Data Your data is here You need it here.
- 49. Using Data RPC Fragile, etc ...
- 50. Using Data Materialise View Eventually consistent Resilient Best performance
- 52. Using Data SEDA – Staged Event Driven Architecture
- 55. Reactive Tech Selection Message Based Manage State
- 56. Reactive Technologies Actors – Akka/ Logam SEDA Events – Lambda, Vertx etc Data Flow/ CSP – Spring Data Flow Event Logs – Kafka, EventStore.io
- 57. What have you lost? Reactive Systems
- 58. APIs
- 59. APIs == HTTP
- 60. APIs == HTTP Discovery Docs (swagger et al) Well defined Technical Interaction model monitoring testing tech autonomy
- 61. HTTP: Technical Interaction Model HTTP API "GET me X please" "Here is X"
- 62. APIs Docs (swagger et al) Discovery Well defined Technical Interaction model monitoring testing== HTTP tech autonomy
- 63. APIs == HTTP Docs (swagger et al) Discovery Well defined Technical Interaction model monitoring testing tech autonomy
- 64. APIs == HTTP Docs (swagger et al) Discovery Well defined Technical Interaction model monitoring testing
- 65. :-(:-(
- 66. Reactive tech as an API surrogate
- 67. Building a Reactive System becomes a Strategic Choice
- 68. APIs == HTTP
- 69. APIs == HTTP
- 71. APIs Reactive
- 72. APIs Message
- 73. Reactive: Technical Interaction Models?
- 74. Reactive: Technical Interaction Models? Reactive API
- 75. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y"
- 76. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now"
- 77. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y"
- 78. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y" "Here is Y"
- 79. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y" "Here is Y" "Here is Y" "Here is Y"
- 80. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y" "Here is Y" "Here is Y" "Here is Y" "Slow down"
- 81. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y" "Here is Y" "Here is Y" "Here is Y" "Slow down" .....
- 82. Reactive: Technical Interaction Models? Technical Messages and Domain Messages [often events]
- 83. Reactive: Technical Interaction Models? Technical Messages and Domain Messages [often events]
- 84. Reactive: Technical Interaction Models? = reusable Communication protocol Technical Messages
- 85. Reactive: Technical Interaction Models? Reactive API "I want to trade X for Y" "I offer 10*Y in 2 minutes, or Z now" "I'll take 10Y" "Here is Y" "Here is Y" "Here is Y" "Slow down" .....
- 86. Reactive: Technical Interaction Models? Reactive API Two Party Negotiation Client Managed Streaming
- 87. APIs Reactive
- 90. Example: Rx from DB to browser
- 92. MongoDB
- 97. Websockets?
- 98. Back pressure?
- 99. Ugh :-(
- 103. The Muon Model
- 104. The Muon Model Discovery Transport Network …. Protocol Client channel N channel channel channel Service X Service 2 Service 1 API App Code …. 1) Your code uses an API 2) The API creates a Protocol 3) The Protocol communicates using messages 4) A transport routes them over the network
- 105. The Muon Model Discovery Transport Network …. Protocol Client channel N channel channel channel Service X Service 2 Service 1 API App Code …. 1) Your code uses an API 2) The API creates a Protocol 3) The Protocol communicates using messages 4) A transport routes them over the network
- 106. The Muon Model Discovery Transport Network …. Protocol Client channel N channel channel channel Service X Service 2 Service 1 API App Code …. 1) Your code uses an API 2) The API creates a Protocol 3) The Protocol communicates using messages 4) A transport routes them over the network
- 107. The Muon Model Discovery Transport Network …. Protocol Client channel N channel channel channel Service X Service 2 Service 1 API App Code …. 1) Your code uses an API 2) The API creates a Protocol 3) The Protocol communicates using messages 4) A transport routes them over the network
- 108. Solution Using Muon
- 109. Muon Reactive Streams A Message based API using http://reactivestreams.org http://github.com/muoncore/stack-reactive-streams
- 110. Muon Reactive Streams Stream Client Stream Server Transport Failure SubscriptionRequested SubAck SubNack Data Complete Error Cancel Request
- 111. Java Server [JS in progress...] Muon muon = ... ReactiveStreamServer rx = new ReactiveStreamServer(muon); Publisher<Data> pub = doMongoQuery(…); muon.publishSource("/my-big-data", COLD, pub); Muon Reactive Streams
- 112. Node Client muon.subscribe("stream://myservice/my-big-data", {}, (data) => { console.log(“I got data “ + data) }, (error) => {}, () => { // complete}); Muon Reactive Streams
- 118. MongoDB TODO Chrome Microservice? Microservice? MongoDB Muon Gateway 1 websocket, multiplexing Internal comms AMQP | TCP | Kafka ... Browser
- 119. Demo Reactive API - Client Controlled Streaming
- 120. Browser Muon?
- 121. var Muon = require("muonjs") var muon = Muon.client({port:9898}) Browser Muon?
- 122. var Muon = require("muonjs") var muon = Muon.client({port:9898}) muon.subscribe("stream://myservice/my-big-data", {}, (data) => { console.log(“I got data “ + data) }, (error) => {}, () => { // complete}); Browser Muon?
- 123. Demo Reactive API - Client Controlled Streaming In a browser!
- 124. A brief intro to Event Logs
- 125. Events ? Events ?
- 128. Order Placed Payment Taken Email Sent EventsEvents
- 131. Order Stream Notification Stream Payment Stream EventsEvents
- 132. Order Stream Events
- 136. The Muon Model Discovery Transport Network …. Protocol Client channel N channel channel channel Service X Service 2 Service 1 API App Code …. 1) Your code uses an API 2) The API creates a Protocol 3) The Protocol communicates using messages 4) A transport routes them over the network
- 137. Protocol - Events My App AMQP Event Proto Server Mongo | Cassandra Event Proto Client AMQP Transport AMQP Transport [event store] Standalone Event Store – Multi Process
- 138. Muon Event Log API A Message based API http://github.com/muoncore/stack-events
- 139. Java Client Muon muon = getMuon(); EventClient client = new DefaultEventClient(muon); Order order = ... client.event( ClientEvent.ofType("OrderPlaced") .payload(order) .stream("/orders").build()) Muon Event Log API
- 140. Java Client Muon muon = getMuon(); EventClient client = new DefaultEventClient(muon); Subscriber<Event> s = … (RxJava, Reactor etc) client.replay("/requests", REPLAY_ONLY, s); Muon Event Log API
- 141. Demo Reactive API - Event Logs
- 142. Protocol - Events My App AMQP Event Proto Server Mongo | Cassandra Event Proto Client AMQP Transport AMQP Transport [event store] Standalone Event Store – Multi Process
- 143. Event Store (Kafka?) Payment Processor Hub and SpokeHub and Spoke Fraud Analysis Order AR Notification Manager Order Stream Notification Stream Payment Stream
- 144. All Hail Kafka?
- 145. Event Store (Kafka?) Payment Processor Hub and SpokeHub and Spoke Fraud Analysis Order AR Notification Manager Order Stream Notification Stream Payment Stream
- 146. Order Stream Notification Stream Payment Stream Event Store (Kafka?) Payment Processor Hub and SpokeHub and Spoke Fraud Analysis Order AR Notification Manager BoomBoom
- 147. Order Stream Notification Stream Payment Stream Event Store (Kafka?) Payment Processor Hub and SpokeHub and Spoke Fraud Analysis Order AR Notification Manager BoomBoom Single Point ofSingle Point of Screw UpScrew Up :-(:-(
- 150. Order AR Payment Processor Notification Manager Fraud Analysis Each service implements event API
- 151. Order AR Payment Processor Notification Manager Fraud Analysis Each service implements event API NoNo Single Point ofSingle Point of Screw UpScrew Up :-):-)
- 152. Order AR Payment Processor Notification Manager Fraud Analysis Each service implements event API
- 153. Thoughts
- 154. Thoughts Uses Muon Event Log API.
- 155. Thoughts Uses Muon Event Log API. All Muon implementations can contribute/ consume data (jvm, node, browser etc)
- 156. Thoughts Uses Muon Event Log API. All Muon implementations can contribute/ consume data (jvm, node, browser etc) Runs on any event store that implements (or is wrapped by) the Muon Event Log API
- 157. Event Log API == Less Strategic Decisions
- 158. When to use Muon Want APIs, but better than just RPC? Defer "strategic" tech decisions till later Thinking of using a websocket? or a message queue?
- 160. There's more... More types of API available ... me@daviddawson.me http://muoncore.io
- 161. There's more... More types of API available ... Multiple transports available me@daviddawson.me http://muoncore.io
- 162. There's more... More types of API available ... Multiple transports available Any infrastructure you like! me@daviddawson.me http://muoncore.io
- 163. There's more... More types of API available ... Multiple transports available Any infrastructure you like! Want to extend/ contribute? Join us at me@daviddawson.me http://muoncore.io
Editor's Notes
- Isolation! Aspiration Evolution Ability to change
- Dan North Bounded/ Centred Community
- Not the solution! An approach to solving the problem. Tools to engage the world Sounds familiar.
- h
- Ask the audience. One big one.
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Some say XXX This is what we are going to discuss! Understand a man by walking in his shoes
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.
- Ask the audience. One big one.