Hono - Ultrafast web framework for Cloudflare Workers, Deno, Bun, and Node.js

by Yusuke Wada

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Yusuke Wada 2022.11.26 JSConf JP Hono Ultrafast web framework for Cloud fl are Workers, Deno, Bun, and Node.js

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Me • Yusuke Wada • Supervisor at TravelBook Inc. • Web developer, Web framework developer • https://yusukebe.com/ • https://github.com/yusukebe 2

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Today's topics • Core concepts of Hono 1. Multi-runtimes 2. Ultrafast 3. Middleware 4. Experience 3

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Hono in 1min. 4

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Initial Commit • 2021-12-15 5

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Star History 6

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Who is using Hono • cdnjs API Server • Drivly - Commerce infrastructure for the automotive industry • Ultra - Zero-Legacy Deno/React Suspense SSR Framework • Deno cli/bench/http 7

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Workers Launchpad 8 ref: https://blog.cloud fl are.com/launchpad-fall-22/

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Deno benchmarks 9 https://deno.land/benchmarks

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Concept 1 Multi-runtimes 10

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Hono works on... • Cloud fl are Workers / workerd • Vercel Edge Runtime • Fastly Compute@Edge • Deno • Bun • Node.js • and more... 11

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The same code runs on all platforms 12

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Cloudflare Workers and Bun

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Fastly Compute@Edge and Vercel Edge Runtime

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Deno

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Node.js

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Thanks to Web standards • Zero-dependencies / No poly fi ll • Web-interoperable Runtimes will be powered by WinterCG 17

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Cloudflare Workers 18 ref: https://developers.cloud fl are.com/workers/runtime-apis/

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Deno 19 ref: https://deno.land/[email protected]/runtime/web_platform_apis

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Bun 20 ref: https://github.com/oven-sh/bun#Reference

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Node.js 21 ref: https://github.com/honojs/node-server • Using `@remix-run/web-fetch`

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context.ts 22 Discussion in WinterCG => https://github.com/wintercg/runtime-keys/pull/2

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Great 👍 23

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Concept 2 Ultrafast 24

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Cloudflare Workers 25 ref: https://github.com/honojs/hono/tree/main/benchmarks/handle-event

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Deno 26 ref: https://github.com/denosaurs/bench

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Bun 27 ref: https://github.com/SaltyAom/bun-http-framework-benchmark

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Node.js • Fastify • Reqs/sec 63417.00 5358.22 67487.06 • Express • Reqs/sec 20709.94 1683.03 23045.34 • Hono with @honojs/node-server • Reqs/sec 32054.95 2642.04 35583.36 28

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Node.js - router 29 Decode URI, Handle Query strings Does not support regexp Does not support regexp

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Why so fast? 30

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3+1 Routers 1. StaticRouter • Fastest, supports only static routes. 2. RegExpRouter • Faster, supports almost routes. 3. TrieRouter • Slowest, supports all routes.   But it's faster than other routers in the world. 31

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"Linear" router 32

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ref: https://github.com/yusukebe/pico

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TrieRouter • Using Trie Tree structure • Support all patterns 34

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RegExpRouter • Match the route with using one big Regex made before dispatch. • By @usualoma • https://speakerdeck.com/usualoma/ultrafast-js-router 36

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StaticRouter • Optimized for static routings • Does not support dynamic routings such as "path parameters" 38

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SmartRouter • The default router • Automatically picks the best router from the three routers. 40 • StaticRouter • RegExpRouter • TrieRouter

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Great 👍 41

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Concept 3 Middleware 42

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Small core • hono.ts • context.ts • compose.ts • request.ts 43 Basic app with Wrangler: Total Upload: 34.15 KiB / gzip: 8.26 KiB

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Three types of Middleware • Built-in Middleware - including the package • Custom Middleware - created by the users • Third-party Middleware - depends on external libraries 44

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Built-in Middleware • Basic Auth • Bearer Auth • Cache • Compress • CORS • Etag • html • JSX • JWT Auth • Logger • Pretty JSON • Serve Static • Validator 45

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JSX Middleware 46

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Validator Middleware 47

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Custom Middleware 48

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Third-party Middleware 49 • GraphQL Server • Firebase Auth • Sentry • tRPC (?) ref: https://github.com/honojs/hono/issues/582

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Great 👍 50

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Concept 4 Experience 51

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TypeScript • Wrangler, Deno, and Bun fi rst-class support TypeScript. 52

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Path parameters 53

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Validator Middleware 54

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Easy to write tests • With `jest-environment-mini fl are` • We can do test `Request` to `Response` 55

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Great 👍 56

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Example: Blog 57

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import 58

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Model 59

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Logic 60

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JSX 61

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GET / 62

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POST /post 63

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Use cases in the real world 64

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With Cloudflare R2 65 • github.com/yusukebe/r2-image-worker • Store and Deliver images with R2 backend Cloud fl are Workers. ref: https://github.com/yusukebe/r2-image-worker

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With Cloudflare D1 66 ref: https://blog.cloud fl are.com/making-static-sites-dynamic-with-cloud fl are-d1/

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Cache control 67 ref: https://yusukebe.com/posts/2022/wsh/

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Express alternative on Bun 68

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Feature plans 69

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Ecosystem • For Third-party Middleware • monorepo • API specs as Types • tRPC like, but integrated 70

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API specs as Types 71 ref: https://github.com/honojs/hono/issues/582

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And... 72

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Going to Standard web framework for Web standards 73

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One more thing 74

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Pico 75 Pico is ultra-tiny (about 1kB) web framework using URLPattern. Pico works on Cloud fl are Workers and Deno. Pico is compatible with Hono.