"ExpressJS - Disposable Hero" 1. Clean Controller 2. API versioning "Useful Tools...And Justice for All" 1. Data Analysis Tools - short review 2. Continuous Integration Systems 3. Rest Clients

1. Unnamed Project
Original faults and profits

2. ExpressJS: Disposable Hero

3. - Express.js is the most popular Node.js web application framework used
today
- Not enough experience to understand our needs
- Easy to jump in
Why did we choose ExpressJS?

4. ExpressJS: Default architecture

5. - Routing
- Middlewares
ExpressJS: Key points

6. ExpressJS: Clean Controller
problem of overusing

7. ExpressJS: Clean Controller
problem of overusing
Data Validators

8. ExpressJS: Clean Controller
problem of overusing
Data Validators
Entity Loaders

9. ExpressJS: Clean Controller
problem of overusing
Data Validators
Access Control
Entity Loaders

10. ExpressJS: Clean Controller
problem of overusing
Data Validators
Access Control
Entity Loaders
Data Mappers

11. ExpressJS: Clean Controller
problem of overusing
Data Validators
Access Control
Entity Loaders
Data Mappers
Business Logic

12. ExpressJS: Clean Controller
problem of overusing
const controller = {
};
Data Validators
Access Control
Entity Loaders
Data Mappers
Business Logic

13. validator
middleware
entity loader access control data mapper controller
middleware middleware middleware middleware
ExpressJS: Clean Controller
cleaning out - short flow schema

14. - Load data from source (database)
- Modify request by assigning loaded data to access it from controller
ExpressJS: Clean Controller
cleaning out - entity loader schema

15. ExpressJS: Clean Controller
cleaning out - full flow schema
error error error
success success success success
errorerror
success
validator entity loader
access
control
data mapper controller
top level error handler
request response

16. ExpressJS: Clean Controller
cleaning out

17. ExpressJS: Clean Controller
cleaning out - using events
Event handler
Module A Module B Module C Controller
request response
“Background” functionality

18. Name: Roman Sachenko
Email: roman.sachenko@gmail.com
Skype: roman.sachenko

19. DA - 14 2016