JS-IL Keynote: MongoDB 2.6, Mongoose 4.0, and Beyond
1 like1,302 views
This document summarizes a talk about using MongoDB 2.6, Mongoose 4.0, ECMAScript 6 generators, and Browserify. It discusses how ES6 generators can make asynchronous code more readable in Node.js and Mongoose. It also explains how Browserify allows sharing code between Node.js and the browser, enabling the use of Mongoose schemas directly in the browser. The talk outlines an experimental Browserify support branch in Mongoose and looks forward to fully leveraging new JavaScript technologies like ES6 and Browserify.
JS-IL Keynote: MongoDB 2.6, Mongoose 4.0, and Beyond
- 1. MongoDB 2.6, Mongoose 4.0, and Beyond NodeJS and MongoDB meets ES6 and Browserify Valeri Karpov Software Engineer, MongoDB www.thecodebarbarian.com www.slideshare.net/vkarpov15 github.com/vkarpov15 @code_barbarian
- 2. * Who Am I? •CI/NodeJS Engineer at MongoDB •Maintainer of mongoose ODM •Former CTO, LevelUp •MEAN stack apps: Ascot Project, Bookalokal
- 3. * Talk Overview •Exciting developments in JavaScript: • ECMAScript 6 (Harmony) is coming • Browserify is changing the way we use NodeJS • Compiles NodeJS code into browser-friendly form •Mongoose 4.0 (ETA September) + ES6 + Browserify •Also highlight some new features in MongoDB 2.6
- 4. * What is Mongoose? •Elegant ODM for MongoDB and NodeJS •ActiveRecord-like Models per MongoDB collection •Syntactic sugar for queries: chaining, fluent syntax • ex: .find().where('answer').equals(42) •Join-like functionality via populate() •Promises/A+ conformant promises •Community authored (same author as socket.io)
- 5. * Part I: ES6 Generators and mongoose
- 6. * Generators in ECMAScript 6 •ES6 will include a yield keyword •Write async code with less pyramid of doom •NodeJS 0.11.x, use node --harmony
- 7. * Using Generators in ECMAScript 6 •Still need library, such as Q or co •Special syntax for a function that can yield: • function*() {}
- 8. * Attaining Harmony with Generators •yield enables try/catch for async code •Elegant replacement for async.parallel()
- 9. * Using yield with mongoose •MongoDB 2.6 text search (mongoose >= 3.8.9)
- 10. * Batch save in mongoose •Without yield:
- 11. * Batch save in mongoose with yield
- 12. * Part II: Mongoose in the Browser
- 13. * Browserify-friendly Schemas •The dream: same schema in browser and server •Simplicity: one schema, one language, one validation function
- 14. * The Dream Made Real
- 15. * The Dream Made Real, Part II
- 17. * Browserify Schema Status •Very very rough proof of concept, not alpha-ready •Branch on Github •Also supports ES6 generators :)
- 18. * Review •JavaScript has a very exciting future •ES6 Generators make async code human-readable •Browserify makes code sharing a reality •Mongoose will take advantage of this tech •My talk at 11:45: 1 hour to build a MEAN stack app with mongoose and browserify
- 19. * Thanks for Listening! •Slides on: • Twitter: @code_barbarian • Slideshare: slideshare.net/vkarpov15 •Mongoose on Github