Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Platform-powered: Building a Frontend Platform ...

Platform-powered: Building a Frontend Platform that Scales

As Lyft grew in size, we faced the problem of platform fragmentation. How would we manage a growing frontend microservice explosion, while allowing our services to evolve for the future?

We share about the next-generation frontend platform at Lyft, and the tooling that is built in to manage and migrate all 100+ frontend microservices. A talk relevant to any platform team building a technology platform to accelerate product delivery across all teams, while managing technical debt.

Andrew Hao

June 30, 2021
Tweet

More Decks by Andrew Hao

Other Decks in Programming

Transcript

  1. "...most tools and processes only support about one order of

    magnitude of growth before becoming ineffective" Will Larson. An Elegant Puzzle: Systems of Engineering Management 3 / 31
  2. Monolith to Microservices Python/Angular monolith ...to Node + React isomorphic

    apps via a templated service generator ...coupled with infrastructure investments in microservices ...led to a microservice explosion! 💥 4 / 31
  3. But the problems were starting to catch up to us

    Long-lived services require maintenance Platform was fragmenting New infrastructure updates were hard to apply 5 / 31
  4. Principles for Technical Leverage 👟 ✨ 🤖 Stand on the

    Shoulders of Giants Simplify to Understand Standardize and Automate 11 / 31
  5. Stand on the Shoulders of Giants 👟 We chose Next.js

    as our platform of choice 12 / 31
  6. Stand on the Shoulders of Giants 👟 We chose Next.js

    as our platform of choice Solved: Build configurations, static site generation, AMP pages, code splitting, dynamic imports 12 / 31
  7. Stand on the Shoulders of Giants 👟 We chose Next.js

    as our platform of choice Solved: Build configurations, static site generation, AMP pages, code splitting, dynamic imports 🎷 Now: We don't need to maintain our internal build system anymore 12 / 31
  8. Simplify to Understand ✨ Paradigm shift: convention over configuration Next.js:

    Filesystem router, server-side getInitialProps and getServerSideProps handlers 13 / 31
  9. Simplify to Understand ✨ Paradigm shift: convention over configuration Next.js:

    Filesystem router, server-side getInitialProps and getServerSideProps handlers 🍕 Now: Lower cognitive load working in apps, higher developer productivity 13 / 31
  10. Standardize and Automate 🤖 We built a plugin system that

    standardizes our library integrations 14 / 31
  11. Standardize and Automate 🤖 We built a plugin system that

    standardizes our library integrations We made migrations a first-class part of our new system 14 / 31
  12. Standardize and Automate 🤖 We built a plugin system that

    standardizes our library integrations We made migrations a first-class part of our new system 🎸 Now: we have the tools to reuse code, keep the stack modern and prevent drift 14 / 31
  13. Anatomy of a Plugin A set of hooks, bundled up

    in a library Plugin Hooks: Webpack Express Middleware Next.js Configuration Next.js Application Next.js Document 15 / 31
  14. 1. Install the plugin in lyft.plugins.ts import CookieAuthPlugin from "@lyft/service

    plugin cookie auth"; const plugins = [ new CookieAuthPlugin(), Other plugins ]; 16 / 31
  15. 2. Use it! import { useCookieAuth } from "@lyft/service plugin

    cookie auth"; In React component const Page: React.FC = () { const { userId, isLoggedIn } = useCookieAuth(); That's it! You can now use as you see f t if (!isLoggedIn()) { return <p>Sorry, you must be logged in p>; } }; 17 / 31
  16. CookieAuthPlugin: Express.js server hook import cookieParser from "cookie parser"; import

    { Application } from "express"; const cookieAuthServerHook = (app: Application) { Gives us req.cookies app.use(cookieParser); app.use(function parseUserId(req, res, next) { Assume this decrypts data and returns a user ID from a session const { userId } = parseSessionCookies(req.cookies); Store userId in response for later retrieval res.locals.userId = userId; next(); }); }; 18 / 31
  17. CookieAuthPlugin: Next.js App hook function CookieAuthApp({ App: NextApp }) {

    return class extends App { static getInitialProps = async (appContext) { const originalProps = await App.getInitialProps(appContext); const userId = appContext.ctx.res locals userId; return { originalProps, userId }; }; render() { return ( <CookieAuthContext.Provider value={this.props.userId}> {super.render()} </CookieAuthContext.Provider> ); } }; } 19 / 31
  18. Bring it all together into the Plugin export default class

    CookieAuthPlugin { apply = (service: ServicePluginHost) { service.hooks.server.tap(this.name, cookieAuthServerHook); service.hooks.app.tap(this.name, (App) CookieAuthApp({ App })); }; } 20 / 31
  19. And add a nice developer facing convenience hook const useCookieAuth

    = () ({ userId: React.useContext(CookieAuthContext), isLoggedIn: () { const userId = React.useContext(CookieAuthContext); return userId; }, }); 21 / 31
  20. @lyft/service Plugin Ecosystem State management (Redux, MobX, XState) GraphQL Lyft

    Product Language, styled-components, Material UI authn/authz i18n RUM performance tracking Feature flagging and experimentation MirageJS Logging/metrics/bug reporting 22 / 31
  21. Flywheel effect Now users are contributing back to these plugins

    Over 40% of new plugins have been product-engineer contributions 24 / 31
  22. Original import { logger } from "@lyft/service plugin logging"; logger.info("test

    log"); Upgraded import { getLogger } from "@lyft/service plugin logging"; const logger = getLogger(); logger.info("test log"); 26 / 31
  23. Migration Versioning We use versioned migrations If you change an

    interface, you must ship a migration Store migration state per plugin in package.json 27 / 31
  24. Release Management: One bold constraint The platform version and the

    plugin system are pinned to the same version 🎯 Plugins are guaranteed to work with a specific version of the platform This means the entire platform moves together! 28 / 31
  25. Organizational process Hands-on migration workshops Migration scripts take services most

    of the way from Gen 2 to Gen 3 Relentless internal evangelism Technical program management + senior leadership visibility are key 29 / 31
  26. Principles for Technical Leverage 👟 ✨ 🤖 Stand on the

    Shoulders of Giants Simplify to Understand Standardize and Automate 31 / 31