mu.semte.ch: A transitional architecture for Linked Data
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The document outlines a transitional architecture for linked data by RedPencil.io, emphasizing the use of microservices and semantic modeling to create efficient, maintainable, and adaptable business solutions. It highlights the advantages of using Docker for easy deployment and the importance of a simple mental model in service development. Additionally, it discusses the future potential for reactive programming and performance improvements within microservice architectures.
![redpencil.io
In 60 seconds
State-of-the-art web applications fuelled by Linked Data aware microservices
- User-facing microservices
- Easy deployment using Docker
- Single Page Apps using Ember.js
- Well known requirements
=> [HTTP+JSON+SPARQL]
https://github.com/mu-semtech/
https://mu.semte.ch](https://image.slidesharecdn.com/1200-1230sallehocaillemu-180313134751/85/mu-semte-ch-A-transitional-architecture-for-Linked-Data-12-320.jpg)
![redpencil.io
Base templates
CatalogsIndexRoute = Ember.Route.extend
ajax: Ember.inject.service()
model: () ->
@get('ajax').request('/hello')
Hello result: {{model.value}}
get '/hello/' do
counter = query( "SELECT COUNT (*) as ?counter" +
"WHERE {" +
" ?s ?p ?o." +
"}" ).first[:counter].to_i
status 200
{ value: counter }.to_json
end
FROM semtech/mu-ruby-template:2.0.0-ruby2.3
MAINTAINER Your Name <you@provider.com>
demo:
image: you/demo-service
links:
- db:database
dispatcher:
…
links:
- demo:demo
match "/hello/*path" do
Proxy.forward conn, path, "http://demo/hello/"
end
[mu-ruby-template]](https://image.slidesharecdn.com/1200-1230sallehocaillemu-180313134751/85/mu-semte-ch-A-transitional-architecture-for-Linked-Data-25-320.jpg)
![redpencil.io
Configurable services
(define-resource agendapunt ()
:class (s-prefix "besluit:Agendapunt")
:properties `((:titel :string ,(s-prefix "dct:title"))
(:beschrijving :string ,(s-prefix "dct:description"))
(:openbaar :boolean ,(s-prefix
"besluit:geplandOpenbaar"))
:has-many `((agendapunt :via ,(s-prefix "dct:references")
:as "referenties"))
:has-one `((agendapunt :via ,(s-prefix "besluit:aangebrachtNa")
:as "vorige-agendapunt")
(agenda :via ,(s-prefix "besluit:heeftAgendapunt")
:inverse t
:as "agenda"))
:resource-base (s-url "https://data.lblod.info/id/agendapunten/")
:on-path "agendapunten")
[mu-cl-resources]
Full JSONAPI from abstract description](https://image.slidesharecdn.com/1200-1230sallehocaillemu-180313134751/85/mu-semte-ch-A-transitional-architecture-for-Linked-Data-26-320.jpg)
mu.semte.ch: A transitional architecture for Linked Data
- 1. redpencil.io redpencil.io A transitional architecture for Linked Data Aad Versteden & Niels Vandekeybus from redpencil.io for OpenBelgium
- 2. redpencil.io - Lower total cost of ownership - Ease to adapt and extend - Predictable performance - Easy to maintain - Low initial cost How are business solutions chosen?
- 3. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium WHOOPS Linked Data does not offer this . . . yet
- 5. redpencil.io - Easy to understand - Easy to debug - Easy to reuse Microservices are awesome
- 6. redpencil.io Microservices are complex - Data model dependencies - API dependencies - Disaster analysis
- 7. redpencil.io - Direct connection to the database - Using semantic modelling Microservices are to be reengineered
- 8. redpencil.io - Embrace Semantic Model - Functional microservices - Standard APIs Microservices are micro standalone services
- 9. redpencil.io … taking advantage of the semantic domain model
- 10. redpencil.io Some history Share code on personal projects Rails is not über-productive Stay light, choose later Use microservices and semantic model
- 12. redpencil.io In 60 seconds State-of-the-art web applications fuelled by Linked Data aware microservices - User-facing microservices - Easy deployment using Docker - Single Page Apps using Ember.js - Well known requirements => [HTTP+JSON+SPARQL] https://github.com/mu-semtech/ https://mu.semte.ch
- 13. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium KISS Keep It Super Simple
- 14. redpencil.io KISS - Most of us aren’t microservice experts - Most of us aren’t UI experts - We need to get stuff done - Maximize freedom - Orthogonal features - Minimize requirements - Enforce simple mental model
- 15. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium Simple mental model user-facing http-services
- 16. redpencil.io Simple mental model User-facing microservices Limit base technologies: - HTTP - JSON(API) - SPARQL (one graph)
- 17. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium Semantic models Many actors, telling parts of the same story
- 18. redpencil.io Semantic models Services read/write the part of the world they understand. User Registration: - There’s a new user => add it to the triplestore. User Login: - Check username/password => connect user to current session.
- 20. redpencil.io Semantic models Many implementations, one model Same model for: - Username/Password login - OAuth login - ACM/IDM login
- 21. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium Docker Deployment made easy
- 22. redpencil.io Docker Container =~ Lightweight Linux Virtual Machine Docker Compose =~ Topology of multi-container project Each service runs in its own Docker Container In short: - Simple hosting on hub.docker.com - Clean project description - Always works Share using Docker
- 23. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium Reuse everything
- 24. redpencil.io Reuse everything - Templates: basics for a service - Configurable services - mu-cl-resources - Ember add-ons - Data table addon - Login add-on
- 25. redpencil.io Base templates CatalogsIndexRoute = Ember.Route.extend ajax: Ember.inject.service() model: () -> @get('ajax').request('/hello') Hello result: {{model.value}} get '/hello/' do counter = query( "SELECT COUNT (*) as ?counter" + "WHERE {" + " ?s ?p ?o." + "}" ).first[:counter].to_i status 200 { value: counter }.to_json end FROM semtech/mu-ruby-template:2.0.0-ruby2.3 MAINTAINER Your Name <[email protected]> demo: image: you/demo-service links: - db:database dispatcher: … links: - demo:demo match "/hello/*path" do Proxy.forward conn, path, "http://demo/hello/" end [mu-ruby-template]
- 26. redpencil.io Configurable services (define-resource agendapunt () :class (s-prefix "besluit:Agendapunt") :properties `((:titel :string ,(s-prefix "dct:title")) (:beschrijving :string ,(s-prefix "dct:description")) (:openbaar :boolean ,(s-prefix "besluit:geplandOpenbaar")) :has-many `((agendapunt :via ,(s-prefix "dct:references") :as "referenties")) :has-one `((agendapunt :via ,(s-prefix "besluit:aangebrachtNa") :as "vorige-agendapunt") (agenda :via ,(s-prefix "besluit:heeftAgendapunt") :inverse t :as "agenda")) :resource-base (s-url "https://data.lblod.info/id/agendapunten/") :on-path "agendapunten") [mu-cl-resources] Full JSONAPI from abstract description
- 27. redpencil.io Ember add-ons > ember install ember-paper-data-table // template {{data-table content=model fields="title isbn genre publicationDate language numberOfPages" sort=sort page=page size=size}} // route import Ember from 'ember'; import DataTableRouteMixin from 'ember-data-table/mixins/route'; export default Ember.Route.extend(DataTableRouteMixin, { modelName: 'book' });
- 28. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium What we learned
- 29. redpencil.io What we experienced - Extremely productive - Code reuse - Easy for juniors - Customers like front-end - Database performance is okayish - Conscious playing with alternative solutions
- 30. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium About the future
- 31. redpencil.io Trigger microservices by changes in semantic model. Example: -Send email/tweet by writing it to the triplestore - Compute KPIs when a new dataset is added Reactive programming
- 32. redpencil.io More performance - ember-fastboot: Faster first page render - mu-cache: Smart caching strategies in core microservices - mu-cl-resources: Partial resource caching
- 33. redpencil.io More authority Describe authorization outside the microservices: - Simplify mental model - Help in sharing content - Open gate to advanced applications
- 34. redpencil.io More interactivity Push cache updates to all visiting clients. Almost no development time to create basic interactive applications (eg: updating KPIs, chat applications, …)
- 35. redpencil.ioredpencil.ioFrom Aad Versteden & Niels Vandekeybus of redpencil.io for Open Belgium More links
- 36. redpencil.io Resources used & interesting links Lego Time Star Wars: https://www.flickr.com/photos/eurobricks-starwars/5223334274/in/photolist-8XyXiu-7BJ9Xp-c2btBw-davQBK- nAQJCC-9XVSZs-a3vVhy-vPZaHw-r6NB6c-4ajSXh-rX7ezA-BBhAWf-BiWDpc- rED79Q-rX7f8u-mtctqc-wtp245-fcNzVb-CgXNsA-D4Uxps-wKj5u9-rX7fVm- rUWnBU-uhC54v-rXeB4g-zVknPq-qxEqXx-8GSCNc-nzg79j-biFNa6-9fXjwV-biFMTa-a1kbsX-5HnKDa-dQCdnW-a54g8X-bm9TRN-8zJUzU-fbGRan-sdr4hw- e9DMFz-q3qQqf-aAZwyV- bm9Tsw-dQCdpb-sdpUWU-rkow4K-wazJmK-bz4Md8-pyU2QM Wendelstein 7X: http://www.sciencemag.org/news/2015/10/ bizarre-reactor-might-save- nuclear-fusion 300SL: https://www. flickr.com/photos/smfan/7181631212/in/photolist-bWBJKN-o52kEN- 5pCCRH-6NezBh-oF2nYm-gHtRrE-6KAHDv-cPKKj9-2aj2ur-s3A8ua-5pH14j-bQk48B-omejVV-q2tAx7-o8yCtS-nRauVz-5pCNWB-o525H4-o9dqig-sk2we8- o4EApo-N2NDc-o7jxQM-5pCG4c-81DnQh-exNBvp-kc9m4-exS223-cm2nm5-aPXHgc-7Tg5XD-6HQ5Q9-6w1JtR-5pCGWi-eb6dJe-pJYFdi-azFSaU-p5y4mb- 6GjCy2-q2kGp6-o52baX-9XtXDc-4GqX86-pJXbk1-8canak-q2tu1j-6HQ6eo- sjZQkD-dhaPyf-bBqucA http://www.quickmeme.com/meme/3stqet Big Data Europe: https://www.big-data-europe.eu/ Docker Logo: http://www.silicon.de/41608942/microsoft-optimiert-windows-server- 2016- fuer-die- cloud/ webCAT: https://github.com/tenforce/webcat Banksy Van: http://artcentron.com/2016/06/22/banksy-graffiti-art-swat-van-sale/ #prettyPhoto Banksy Bananas: https://www.touchofmod ern.com/sales/banksy-8a9ea26d-040f-4435-ada1-86e7a6b4a05c/pulp-fiction-bananas Your Data Stories platoform: http://platform.yourdatastories.eu/ Star Wars Clones box: https://www.flickr.com/ photos/kalexanderson/ 5410769283/in/photolist-9f8Bcz-5SJTDj-55MnH2-4WEfzr-in3p6t-drf7fp-3b46gb-bKfRW4-3aYzBt-4xztdx-35E11y-9jVQVR-9wuv3f-9r3mWe-9hNTVz- 7JzMxg-7JYZFM- Hw1QSq-8FW8eh-nVj9Sc- 8ytJvH-aPPKYz-dYyYWK-7fhBFE-7GgZYm-e5M9jV-bwm6S9-7fhyGd-e5SNkL-5LDPWB-e5SNdf-4MKWht-e5SLrb- 5zPWDw-74Yjyb-8xh5Vr-9Apdwp-4XUn5j-jSHfRS-9fAZ86-eueiqp-e5SPwu-e5MbcZ- 9tJQdd- 5f4rJT-9HsoqF-9hud4U- e5MaQX-52mMrQ-e5M9WX/ GitHub Logo: https://blog.adafruit.com/2012/12/31/github-has-big-dreams-for- open-source-software-and-more/ Twitter Logo: https://en.wikipedia.org/wiki/File: Twitter_bird_logo_2012.svg mu-ruby-template: https://github.com/mu-semtech/mu-ruby-template mu-cl-resources: https://github.com/mu-semtech/mu-cl-resources mu-project: https://github.com/ mu-semtech/mu-project https://www.flickr.com/photos/thecampbell/538006470/in/photolist-PxqzC-VvKpZz-5fxVBU-9BdHcy-jun5Rc-b3hJyr-4kwAzq-4aDxKG-9eikzy-oN1cS- b1qFS-5nW8RE-4XQciS-7P4d2M-fcJrSw- 4BFdFe-eeeL3U-7NmZah-5d87sF-68AumY-dsrDuJ-68wgj8-qc8eFQ-87br53-9P9rDt-4BKw9G-RF34ho-TosZvG-878cZX-7EdrUZ-89s9TJ-4BFebF-5B6SFH-4BKw5f-pFSyd-VWMxDV-9yGdaJ- dfCama-7tGsfM-y7Avs-bu5LUt-7ZMRsc-fs8mh2-tw7JN-4dGcFB-8xSsMz-nktNfw-2VBNK-7GiQEy-nnvv8Z https://www.flickr.com/photos/cluczkow/8690663851/in/photolist-eeXVzV-82JLku-fJ9vu-c7ZA4w-fjWxes- eeKJac-bLsdaK-9zhVG1-n9gwFN-d54eqS-8uJCbZ- aaRdq9-eP2SdB-rd3rho-hcCjht-d8sJuN-pgtoo9-e9dgJL-2qdpwR-6p1a48-d54h85-ekh1kE-D9uR9c-ojB38x-4YB5p5-6UUkDm-9FbBY8-9ZfVqH-57q8DD-9qWu4w-2xAzyk-82FAtP- 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Editor's Notes
- #7: Disaster analysis is about analysing the cause when something goes wrong. The dependencies make it not only difficult to upgrade the functionality, but also to troubleshoot errors.
- #8: Dit is een overgangsslide
- #13: Adapt 60 seconds to what it really needs to be :-)
- #17: TODO: color image so registration/login/products/files are coloured differently
- #20: TODO: Alter image to indicate two different services
- #21: Any opinions: Remove meme?
- #25: TODO: Slide containing minimal implementation microservice Mu-cl-resources configuration Use of ember addon (eg: hierarchy service)