The document discusses various architectural patterns and frameworks for developing applications with a focus on Node.js and its capabilities. It compares different patterns such as MVC, REST APIs, and micro-services, outlining their pros, cons, and ecosystems, while also highlighting the importance of simplicity and modularity. The content emphasizes the evolution of web frameworks and emphasizes the need for scalable, efficient solutions in modern application development.

1. Shubhra Kar | Products & Education
twitter:@shubhrakar
Frameworks or a Design Pattern ?

2. About me
u J2EE and SOA architect
u Performance architect
u Node, mBaaS & APIs

3. These guys sent me !
Bert
Belder
Ben
Noordhuis
Node/io Core
Raymond
Feng
Ritchie
Martori
LoopBack & Express Core
Sam
Roberts
Miroslav
Bajtos
Ryan
Graham

4. Buzzwords
Websites
Smart
Mobiles
Online
Catalog
Social
Media
Kiosks
Computers
Physical
Store
Gaming
Consoles

5. No IO bottlenecksHighly Concurrent
Very Fast JIT compiled
Node.js is emerging as the answer
Reduce infrastructure by 5XScalable
Lightweight, JS back and front, HeadlessFull stack
Write and maintain 50% lesser codeSimple
Suited for mobile and IoTEvented & JSON
Biggest OSS community on the planetEcosystem

7. Evolution is inevitable !
Thick
Web
SaaS
Mobile IoT

8. Frameworks evolve as well !
• Callback
• Reactor
• Observer
• Express
• HAPI
• Restify
• Total
• Partial
• Loopback
• Parse
• Meteor
• Feedhenry*
• Loopback
• Sails
• Meteor
• Geddy
• Loopback
• NodeRED
• Proprietary
KISS
MVC
MBaaS
ORM/
MEAN
Micro/
loT

9. Pattern 0: Natal patterns
Philosophy: KISS (Keep It Simple Stupid)
u small core
u small modules
u small surface area
Patterns
u reactor
u callback
u module
u observer

10. Pattern 1: Convention
HTTP Server Library REST HTTP Library
Simple MVC Structure

11. Pros and Cons
Express
DIY
HTTP Routing, Middleware, Templating
Simple Web Apps
Github Stars – 19K
Commercial Support - StrongLoop
CLI App Generator
Export API definition with strong-remoting
Connect/Express middleware extensions
Vast Ecosystem and low learning curve
StrongLoop DevOps tooling support
Manual CRUD endpoints
Manual recursive refactoring/testing
No Data source Support
No Client SDK
No ACL (Fine Authorization)
Restify
DIY
Simplicity, Rest Routing
Simple REST API
Github Stars – 3K
Commercial Support - Joyent
Yeoman Generator
SPDY Support
Dtrace Support
No export of API definition
No Data source Support
No Extensions of significance
Manual CRUD endpoints
Manual recursive refactoring/testing
Limited Ecosystem
No ACL (Fine Authorization)

12. Router
in
Express
StrongLoop
Confiden.al
and
Proprietary
Informa.on
–
©
2015

13. Router
in
Restify
StrongLoop
Confiden.al
and
Proprietary
Informa.on
–
©
2015

14. Pattern 2: Configuration
HTTP Server
Framework
Hapi
Opinionated
Modularity, Security, HTTP Server control
Complex Web Apps, APIs
Github Stars – 4K
Commercial Support - None
Yeoman Generator
No export of API definition
Hapi Plugins – Joi, bell, bassmaster, etc
Limited ecosystem as compared to Express;
but does support templates with plugins
Swagger support for API documentation
Very limited Data source support – Mongo,
Postgres, leveldb
No Client SDK
No ACL (Fine Authorization)

15. Router
in
hapi
StrongLoop
Confiden.al
and
Proprietary
Informa.on
–
©
2015

16. Pattern 3 : Full Stack JS à lends into pattern 4
{“..”} JSON is the new first class citizen

17. Pattern 4: ORM & Isomorphic JS
u Model Driven Development
u Any data source
u Isomorphic JS
u Omni-Channel
u Share Models (Client/Server)
u Loopback & Meteor
u Automatic REST API
generation, routing, etc
u Common Weakness : Higher
Learning Curve

18. Sails
Opinionated
Web MVC framework
WebApps, API
Rails familiarity, MVC
Github Stars – 10 K (older)
Commercial Support - None
Yeoman Generator
StrongLoop DevOps tooling support
No export of API definition
Limited data sources – MySQL, Mongo, Postgresql, memory/file
No Extensions of significance
Limited Ecosystem
No ACL (Fine Authorization)
No Client SDKs
Pros and Cons

19. Loopback
Opinionated
API framework
Complex Web Apps and APIs
Modularity, Scaffolding, Enterprise Connectivity
Github Stars – 4 K (newer)
Commercial Support - StrongLoop
CLI Code Generator, Visual API composer, API explorer
Export API definition
Extensions like Push, File Storage, Passport, Oauth 2.0, Express Middleware
Vast Connector ecosystem and extend express
Auto CRUD
Swagger UI and Code Generator
DataSources like Mongo, mySQL, Oracle, SOAP, REST, SQLServer, Memory/File,
Postgresql, Email, ATG, Couchbase, Apache Kafka, and many more
Client SDK – Angular, Browser, IOS, Android, Node.js
Mature ACL (Fine Authorization), API Gateway
Pros and Cons

20. Developer SDKs
ORM & Isomorphic JS – Loopback.io
JS
client
JS
Server
Remoting
JS
client Replication
Pub Sub

21. Router &
Swagger
in Loopback
StrongLoop
Confiden.al
and
Proprietary
Informa.on
–
©
2015

22. Router
using
Sails

23. Sub-pattern : Schema Discovery

24. mobile/web
clients
social &
analytics
JSON API
API
XML
SQL
SOAP
Etc.
mBaaS
Mobile API tier
Enterprise
Pattern 5: mBaaS

25. mBaaS could be on cloud or premises
u Closed Source / Commercial
u Open Source
Key API
u Push Notification
u Geo Location
u Offline Sync
u Storage
u User Management
u Metering, Analytics
u Native SDK
u Isomorphic JS

26. REST
API
PUSH
GEO
OFF
SYNC
DEVICE
USER FILE
Relational Database Clustered Database Security Gateway Cloud
Laptop ( not requested but useful)
Connections
Tablet Phone IoT SDK API SERVER
Quick Example of Use
App S
Add
App Server
Storage
Relational Database Clustered Database Security Gateway Cloud Firewall SOA Bus ( not sure on this one)
Laptop ( not requested but useful)
Connections
Tablet Phone IoT SDK API SERVER Items for ACL
Quick Example of Use
App Server
Add On
App Server
REST
API
GATEWAY
Channel SDKs
API ENGINE
C
O
N
N
E
C
T
O
R
s
A
P
I
S
D
K
s
Open Source ORM, mBaaS and API framework
REST API
atabase Security Gateway Cloud Firewall SOA Bus ( not sure on this one)
Phone IoT SDK API SERVER Items for ACL
Quick Example of Use
App Server
Add On
App Server
API
Explorer

27. GeoLocation in Loopback

28. Push Notification in Loopback

29. Wait …what is this API Gateway
Thing then ?

30. Synchronous API “Re-Composition” is an anti-pattern

31. Security & Social Logins
Why not an node.js API Gateway pattern ? Pattern 6
API Clients API Gateway API Server
API

32. Internet of Everything
The devices are taking over !!!
Microsecond latencies are the norm

33. API “Decomposition” is the game changer
{JSON}
{JSON}
{JSON}<SOAP/XML>
<TABLE>
Web SaaS Mobile loT
HTML JSON
App Server API Server

34. Is micro services a pattern too ?
Not just infrastructure virtualization !

35. Pattern 7: Micro-services (Design Time)
Client SDK
REST
Endpoints
Store Cache
API Micro
Services
One URL Space
SL API PaaS REST/JSON
API Gateway
Router
Remoting
Model
API Orchestrator
Cloud Services
Model
Model
Connector
Connector
Connectors

36. Pattern 8: Micro-services (Run Time)

37. Now I know !!!

38. A Shameless Plug…

40. First there was Node
Thank you!
JUST WIN,
BABY!