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Expressjs from-zero-to-hero
This document summarizes Express, a web application framework for Node.js. It notes that Express is minimalist, unopinionated, and fast, processing around 21k requests per second. It discusses key Express features like middleware for request/response processing, error handling, routing, and template engines. It provides examples of middleware, security, and input validation packages that can be used with Express. The overall document introduces Express and its core capabilities for building web applications and APIs.
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Expressjs from-zero-to-hero
- 1. Express from zeroto hero Nicola Del Gobbo, Developer, Packly S.R.L.
- 2.
- 3. Nicola Del Gobbo@NickNaso NODEJS HTTP SERVER WEB APPLICATION CLIENT Browser Mobile App REQUEST HANDLER http://your-web-application Request Response
- 4. Nicola Del Gobbo@NickNaso About 40k req/s Hard to maintain
- 5. Nicola Del Gobbo@NickNaso FRAMEWORKS
- 6. Nicola Del Gobbo@NickNaso EXPRESS
- 7. Nicola Del Gobbo@NickNaso EXPRESS • Minimalist • Unopinioneted • Fast (about 21k req/sec) • Simple (do one thing well philosophy from Unix world) • Wrapper of http core module
- 8. Nicola Del Gobbo@NickNaso
- 9. Nicola Del Gobbo@NickNaso EXPRESS • Middleware • Error handler • Router • Views / template engine
- 10. Nicola Del Gobbo@NickNaso MIDDLEWARES It’s always a question to manipulate the Request and Response object
- 11. Nicola Del Gobbo@NickNaso MIDDLEWARES
- 12. Nicola Del Gobbo@NickNaso MIDDLEWARES
- 13. Nicola Del Gobbo@NickNaso MIDDLEWARES
- 14. Nicola Del Gobbo@NickNaso MIDDLEWARES http://expressjs.com/en/resources/middleware.html
- 15. Nicola Del Gobbo@NickNaso ERROR HANDLER
- 16. Nicola Del Gobbo@NickNaso ROUTING Routing refers to determining how an application responds to a client request to a particular endpoint, which is a URI (or path) and a specific HTTP request method
- 17. Nicola Del Gobbo@NickNaso VIEWS / TEMPLATE ENGINE Pug - Mustache - Dust - Nunjuks - EJS
- 18. Nicola Del Gobbo@NickNaso SECURITY Helmet helps you secure your Express apps by setting various HTTP headers npm install helmet https://github.com/helmetjs/helmet
- 19. Nicola Del Gobbo@NickNaso VALIDATE YOUR INPUT The fastest JSON Schema validator for Node.js and browser Ajv npm install ajv https://github.com/epoberezkin/ajv
- 20. Nicola Del Gobbo@NickNaso EXAMPLES
- 21. Nicola Del Gobbo@NickNaso DOMANDE?
- 22. Nicola Del Gobbo@NickNaso GRAZIE https://github.com/NickNaso/expressjs-from-zero-to-hero