Two years ago we started working on a new web framework for Node.js, Fastify. Fastify is highly focused on providing the best developer experience with the least overhead and a powerful plugin architecture. In this talk we'll speak about open source, community, architectures and what means push forwards the limits of a system. We’ll speak about the issues that we had, how we solved them and the methodology we used to work on our project. The attendees will learn about benchmarking systems, data structures and how to build a software with a complex architecture in mind.

1. Building a
future
proof
framework
@delvedor

2. @delvedor

4. Ciao!

5. We’ve built a
new
framework!

6. Under the
hood we are
using Express.

8. Or you die as
innovator,
or you live long
enough to become
the technical debt.

9. Can we avoid that?

10. Two years
ago.

11. Express Hapi
Restify Koa
Micro Connect
take-five total.js

12. fast­json­stringify

13. const FJS = require('fast-json-stringify')
const stringify = FJS({
type: 'object',
properties: {
firstName: { type: 'string' },
lastName: { type: 'string' },
age: { type: 'integer' }
}
})
console.log(stringify({
firstName: 'Tomas',
lastName: 'Della Vedova',
age: 25
}))
2-3x faster

14. fastify.io

15. const fastify = require('fastify')()
fastify.get('/', async (request, reply) => {
return { hello: 'world' }
})
fastify.listen(3000)
fastify.io

16. Design
goals.

17. Design goals.
Built for
speed

19. Design goals.
Almost zero
overhead

20. Overhead:
the price you are
paying for a set of
features.

24. Design goals.
As light as
possible

25. Every feature we
implement in core is
something that we
must maintain.

26. Change it in the future
could lead to massive
breaking changes for
the community.

27. How can we fix this?

28. Design goals.
Extensible
via plugins

29. fastify.register(
require('my-plugin'),
{ options }
)

30. function myPlugin (fastify, opts, next) {
// register other plugins
fastify.register(...)
// add hooks
fastify.addHook(...)
// add decorator
fastify.decorate(...)
// add routes
fastify.route(...)
next()
}
module.exports = myPlugin
async await
is supported as well!

31. Plugins: Architecture

32. Plugins: Encapsulation

33. Exposing functionality to parents
const fp = require('fastify-plugin')
async function myPlugin (fastify, options) {
fastify.decorate('util', yourAwesomeUtility)
// now you can use it with `fastify.util`
}
module.exports = fp(myPlugin)

34. Plugins: Encapsulation

35. Plugins: Real world

36. Encapsulation enables many great things
such as custom log­level per plugin
const fastify = require('fastify')()
fastify.register(require('./api/v1'), {
prefix: '/v1',
logLevel: 'error'
})
fastify.register(require('./api/v2'), {
prefix: '/v2',
logLevel: 'debug'
})

37. Everything
is a plugin

38. Design goals.
Developer
experience

39. API that is easy to use and understand;
Extensive and quality documentation & tooling;
Painless transition from monolith to microservices;
Responsive to issues and questions.

40. Design goals.
Long Term
Support

41. Minimum six months of active development
from the release date;
Additional six months of security updates
after a new Major release;
Part of the Node.js's CITGM suite.

42. Design goals.
OPEN open
source

43. Individuals making significant and
valuable contributions are given
commit-access to the project to
contribute as they see fit.
openopensource.org

44. Design goals.
Security

45. Mandatory 2FA for every member of the team;
Every PR should be reviewed and approved by at
least one member of the team;
Every dependency should pass our code review;
Only two persons are allowed to release a new
version.

46. Two years
after.

47. Fastify v2
is coming has
come.
fastify.rocks/v2

48. Community
impact.

51. Currently, there are
87 officially
recognized plugins

52. 34 maintained
by the core
team

53. One plugin
every 10 days

54. ≥ 8700
stars

55. 110 unique
contributors

56. ≥ 450
forks

57. ≥ 95
releases

58. ≥ 1800
commits

59. Core team: 10
awesome people
allevo cemremengu delvedor
evanshortiss lmammino jsumners
mcollina nwoltman starptech trivikr

60. Did we
make it?

61. Let us
know!

62. Thanks!
fastify.io
@delvedor