Pragmatic approaches to the Event Horizon

Pragmatic approaches to the Event Horizon

Kingsley Davies@kings13y

kings13y

https://github.com/Tesco/mewbase

[

{ "eventId": "intro", "eventType": "research-developer", "data": {

"industry": "gaming" , "duration": "1" },

{ "eventId": "arch", "eventType": "monolith-decomposer", "data": {

"industry": "gaming" , "duration": "4" },

{ "eventId": "dev", "eventType": "es-builder", "data": { "industry": "govt" , "duration": "1" },

{ "eventId": "foss", "eventType": "es-fwk-builder", "data": {

"industry": "retail" , "duration": "0.5" }

]

Overview - Changing perspective

● Past

● Present

● Future

Legacy microservices

Classic: As-is / To-Be

Data Store

Client

Service Tier

Client

Product Service

Wallet PrefsAccount

DS1 DS2 DS3

Turnaround!!!

Events, Events, Events

● Data architecture

● Model of interaction

A way of life…

First taste of events

Pub[event-emitted]

Event Driven Design

Event-Emitted

SystemSubmits Form

ProcessForm

Event Storming

Event storming IRL

Storing Data

Storing Facts (Event Sourcing)

http://bit.ly/2hfqssi

Reading Facts

Materialising Views (CQRS)

http://bit.ly/2j76Ebb

Features..

Traceability

Autonomy

Stability

FP and Microservices

Immutability

Composability

Functions as 1st class citizens

Laziness

=> Event Source storage

=> Functions over data; Service chains

=> Refinement services, Bounds

=> Serverless

When things go silent/bang

Checkpoint

● Event Storming

● Immutable journal of events

● State and Reads as a leftFold on events

● Build for failure

Anything else familiar from checkpoint ?

● Immutable journal of events

● State and Reads as a leftFold on events

...from serverless to masterless ?

…….and trustless (anonymous) ?

Conclusions

X-Domain (product) Storming + Domain Teams

Inversion of Flow => Innovation

Broken promises, retained dreams

Events + Functions

DDD, Dist Sys, Ops & Crypto

Thanks, Links and Questions

THANK YOU!!!

● @kings13y / @underscore

● http://underscore.io/

● http://breakpointradio.net

● https://github.com/Tesco/mewbase

● https://www.youtube.com/watch?v=ycxvm

OKDHMQ

● https://www.youtube.com/watch?v=gTLV

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● https://t.co/GJIIuBeNu5

● https://vimeo.com/223982152

● https://t.co/FGhs4wwzvF

● https://youtu.be/FJ3T8ytF6ro

● https://www.youtube.com/watch?v=JHGk

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