Slide 1

Slide 1 text

leitner.io - @duffleit micro frontends a strive for fully verticalized systems_ leitner.io - @duffleit Voxxed Days Bucharest

Slide 2

Slide 2 text

leitner.io - @duffleit micro frontends just another buzzword_ leitner.io - @duffleit Voxxed Days Bucharest

Slide 3

Slide 3 text

leitner.io - @duffleit David Leitner ▪ Technical Consultant for Senacor Technologies ▪ Lecturer for post diploma courses at UAS Technikum Vienna ▪ I do a couple of things around the tech- community I‘m writing code

Slide 4

Slide 4 text

leitner.io - @duffleit A definition of micro frontends The idea of micro frontends is to extend the concepts of micro services to the frontend world.

Slide 5

Slide 5 text

leitner.io - @duffleit Sam Newman: ▪ small and focused on one thing ▪ … to be autonomous ▪ That‘s it WHY we do them? Microservices * UBERHDTV - https://imgur.com/gallery/nup4lfX CVDD HDD/EDD *

Slide 6

Slide 6 text

leitner.io - @duffleit why autonomous? ✅Independent deployments ✅Small interface surface ✅Technology agnostic ✅Based on standards ✅Autonomous operations ✅Parallel Development

Slide 7

Slide 7 text

leitner.io - @duffleit „Microservices are stated as a contrast system to monoliths.“ Where they came from

Slide 8

Slide 8 text

leitner.io - @duffleit the application the database Ball of Mud Brian Foote Joseph Yoder

Slide 9

Slide 9 text

leitner.io - @duffleit database layer the database business layer frontend layer

Slide 10

Slide 10 text

leitner.io - @duffleit database layer the database business layer frontend layer Change #rippleEffect

Slide 11

Slide 11 text

leitner.io - @duffleit payment the database products user shipping

Slide 12

Slide 12 text

leitner.io - @duffleit DB DB DB DB DB DB DB DB DB

Slide 13

Slide 13 text

leitner.io - @duffleit DB DB DB DB DB DB DB DB DB Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface

Slide 14

Slide 14 text

leitner.io - @duffleit

Slide 15

Slide 15 text

leitner.io - @duffleit But wait, … our microservices have actual human users. - Stefan Tilkov

Slide 16

Slide 16 text

leitner.io - @duffleit

Slide 17

Slide 17 text

leitner.io - @duffleit the frontend

Slide 18

Slide 18 text

leitner.io - @duffleit The frontend is … not an implementation detail, it is a critical part of a microservice architecture.

Slide 19

Slide 19 text

leitner.io - @duffleit frontend platform backend platform Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface a frontend monolith was born a micro frontend TO THE RESCUE Independent deployments Autonomous operations Technology agnostic Based on standards Parallel Development Small interface surface

Slide 20

Slide 20 text

leitner.io - @duffleit

Slide 21

Slide 21 text

leitner.io - @duffleit an approach driven comparison of micro frontends

Slide 22

Slide 22 text

leitner.io - @duffleit #1: Hyperlink Integration

Slide 23

Slide 23 text

leitner.io - @duffleit Flavour #1: Hyperlink Integration frontend platform backend platform Catalogue Ordering Payment Shipping hyperlink hyperlink hyperlink

Slide 24

Slide 24 text

leitner.io - @duffleit Flavour #1: Breaking service boundaries frontend platform backend platform Products Ordering Payment Shipping Dash board

Slide 25

Slide 25 text

leitner.io - @duffleit Flavour #1: Backend for Frontend frontend platform backend platform Products Ordering Payment Shipping Dash board BFF BFF BFF BFF BFF samnewman.io/patterns/architectural/bff/

Slide 26

Slide 26 text

leitner.io - @duffleit Flavour #1: Backend for Frontend frontend platform backend platform Products Ordering Payment GraphQL Shipping Dash board samnewman.io/patterns/architectural/bff/

Slide 27

Slide 27 text

leitner.io - @duffleit Flavour #1: Hyperlink Integration Independent deployments Autonomous operations Technology agnostic Parallel Development

Slide 28

Slide 28 text

leitner.io - @duffleit customers expect one company to have one website

Slide 29

Slide 29 text

leitner.io - @duffleit Flavour #1: Reusage Problem frontend platform backend platform Catalogue Ordering Payment Shipping hyperlink hyperlink hyperlink Navigation Navigation Navigation

Slide 30

Slide 30 text

leitner.io - @duffleit Consumers expect How it really looks Designers expect what…

Slide 31

Slide 31 text

leitner.io - @duffleit Flavour #1: Hyperlink Integration Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading

Slide 32

Slide 32 text

leitner.io - @duffleit #2: Build Time Integration

Slide 33

Slide 33 text

leitner.io - @duffleit Flavour #2: Build Time Integration

Slide 34

Slide 34 text

leitner.io - @duffleit Flavour #2: Build Time Integration BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components, Routing) Mono Repo

Slide 35

Slide 35 text

leitner.io - @duffleit MonoRepo Simplifies dependency management. Allows extensive code sharing and reuse. package.json Shared resources (assets, components…) repository

Slide 36

Slide 36 text

leitner.io - @duffleit Flavour #2: Build Time Integration Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading* BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components)

Slide 37

Slide 37 text

leitner.io - @duffleit #3: Transclusion

Slide 38

Slide 38 text

leitner.io - @duffleit Flavour #3: Transclusion BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components) The bundling is done by the webserver.

Slide 39

Slide 39 text

leitner.io - @duffleit Flavour #3: Server Side Includes or Edge Side Includes

Slide 40

Slide 40 text

leitner.io - @duffleit Flavour #3: Transclusion Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading BUNDLED FRONTED UI-Shared-Stuff (e.g. SPA-Framework, Components)

Slide 41

Slide 41 text

leitner.io - @duffleit #4: App Shell Integration

Slide 42

Slide 42 text

leitner.io - @duffleit Flavour #4: App Shell Integration APP SHELL Header Footer The aggregation is done on the client.

Slide 43

Slide 43 text

leitner.io - @duffleit Flavour #4: App Shell Integration Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading APP SHELL Header Footer

Slide 44

Slide 44 text

leitner.io - @duffleit #5: Metaframework

Slide 45

Slide 45 text

leitner.io - @duffleit Flavour #5: Metaframework Route-based modularisation is handled by a Metaframework Metaframework /catalogue /checkout

Slide 46

Slide 46 text

leitner.io - @duffleit • they are implemented with iframes. • or start using web components now. Flavour #5: Technology agnostic

Slide 47

Slide 47 text

leitner.io - @duffleit Flavour #5: Metaframework Metaframework /catalogue /checkout Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading

Slide 48

Slide 48 text

leitner.io - @duffleit „a consistent UI“ 1) CDN – for static files 2) CMS – for static content 3) A Component Library

Slide 49

Slide 49 text

leitner.io - @duffleit „a component library in code“ SPA-C SPA-B SPA-A component library Time Effort 2019 2020 2021 component library component library a promise that you will save time in the future by reusage. you introduce a dependency between your projects. copy & own

Slide 50

Slide 50 text

leitner.io - @duffleit >> A little copying is better than a little dependency. Rob Pike

Slide 51

Slide 51 text

leitner.io - @duffleit Low Fidelity High Fidelity Design Toolkits Design Specifications Source of truth Even if something has to look equal, it does not have to be technically the same. a design system != component library Component Libraries

Slide 52

Slide 52 text

leitner.io - @duffleit „a component library“ If you really need a component library, then build it framework agnostic. If Angular can be ignored JSX + CSS Modules worked good for us. And, of course web components.

Slide 53

Slide 53 text

leitner.io - @duffleit Flavour #5: Metaframework Metaframework /catalogue /checkout Independent deployments Autonomous operations Technology agnostic Parallel Development A consistent UI/UX Smooth user interaction Fast loading

Slide 54

Slide 54 text

leitner.io - @duffleit https://codeburst.io/building-efficient-components-6ee2bdaea542 the metaframework will be the framework

Slide 55

Slide 55 text

leitner.io - @duffleit Summarize Approaches Hyperlink Integration /catalogue /checkout Metaframework Modularization APP SHELL Header Footer App Shell Integration

Slide 56

Slide 56 text

leitner.io - @duffleit Summarize Approaches /catalogue /checkout APP SHELL Header Footer Hyperlink Integration App Shell Integration Metaframework Integration Time Frontend Backend Build Transclusion Build-Time Integration Modularization

Slide 57

Slide 57 text

leitner.io - @duffleit every consultant. always. it depends

Slide 58

Slide 58 text

leitner.io - @duffleit A general decision advice Your application is big?* The need for smooth user interaction Build Time Integration Hyperlink Integration Strongly Independent UI/Domain Parts Complex modularisation needed Transclusion App Shell Integration Meta- Framework * an application is big enough to justify using micro frontends, if slight UI/UX differences between the two most unrelated subpages are acceptable. Yes No

Slide 59

Slide 59 text

leitner.io - @duffleit Compose your perfect MIX Landing Shop Ordering hyperlink hyperlink APP SHELL Header Footer

Slide 60

Slide 60 text

leitner.io - @duffleit Key-Takeaways „Think twice if a frontend monolith does not fit your needs and start with a monolith first approach.“

Slide 61

Slide 61 text

leitner.io - @duffleit Key-Takeaways „the 8 fallacies of distributed computing are called fallacies for a reason“

Slide 62

Slide 62 text

leitner.io - @duffleit Key-Takeaways „Consider the frontend as part of your microservice architecture – and solve UI specific problems with UI specific solutions.“

Slide 63

Slide 63 text

leitner.io - @duffleit Use the right tool for the right job. @duffleit

Slide 64

Slide 64 text

leitner.io - @duffleit David Leitner ▪ Non-Hype-Train-Activist ▪ I’m writing code