有几个特点:

中间件使用了迭代器,看着这里:https://github.com/trekjs/middleware
去掉了 koa 中的 delegates 模块,速度明显提升!
有个开关 app.raw 你可以使用原生 req 和 res 进行操作。
大量使用新的语法特性(当然这不是什么新鲜事)。
轻量,简洁,优雅(async/await) 目前正在基于 trek-engine 开发 trek 框架(实际上是重构,2015 年是基于 koa,现在有自己的轮子了, 哈哈).

说了这么多,性能如何?

看这里 benchmarks 或者 https://travis-ci.org/trekjs/engine

Benchmarks

Framework	Version
Express	4.14.0
Koa	2.0.0-alpha.6
Toa	1.8.11
Trek Engine	-

Frameworks’ Battle! :fire: :collision:

With wrk

$ make battle

5 middleware

 5 middleware
------- express -------
Hello World
 6114.56
 5 middleware
------- koa -------
Hello World
 6613.55
 5 middleware
------- toa -------
Hello World
 5142.69
 5 middleware
------- trek -------
Hello World
 7393.59

15 middleware

 15 middleware
------- express -------
Hello World
 5681.79
 15 middleware
------- koa -------
Hello World
 6822.63
 15 middleware
------- toa -------
Hello World
 5336.33
 15 middleware
------- trek -------
Hello World
 8198.41

30 middleware

 30 middleware
------- express -------
Hello World
 5168.10
 30 middleware
------- koa -------
Hello World
 6205.17
 30 middleware
------- toa -------
Hello World
 4727.22
 30 middleware
------- trek -------
Hello World
 7982.35

50 middleware

 50 middleware
------- express -------
Hello World
 5393.90
 50 middleware
------- koa -------
Hello World
 5974.12
 50 middleware
------- toa -------
Hello World
 4261.97
 50 middleware
------- trek -------
Hello World
 6634.71

With autocannon

$ benchmarker=autocannon make battle

5 middleware

 5 middleware
------- express -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.84 1.9 53
Req/Sec 5376.55 532.04 5963
Bytes/Sec 1.13 MB 110.42 kB 1.31 MB
59k requests in 11s, 12.42 MB read
 5 middleware
------- koa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 7.57 1.54 54
Req/Sec 6080.55 415.54 6327
Bytes/Sec 918.99 kB 59.88 kB 983.04 kB
67k requests in 11s, 10.1 MB read
 5 middleware
------- toa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.05 4.1 49
Req/Sec 5836.8 494.66 6183
Bytes/Sec 1.01 MB 87.39 kB 1.11 MB
58k requests in 10s, 9.98 MB read
 5 middleware
------- trek -------
Hello World
Stat Avg Stdev Max
Latency (ms) 5.47 1.26 41
Req/Sec 8186.91 516.41 8703
Bytes/Sec 904.1 kB 61.63 kB 983.04 kB
90k requests in 11s, 10 MB read

15 middleware

 15 middleware
------- express -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.78 1.7 55
Req/Sec 5374.4 508.32 5835
Bytes/Sec 1.13 MB 104.09 kB 1.25 MB
54k requests in 10s, 11.29 MB read
 15 middleware
------- koa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.58 2.42 65
Req/Sec 5493.7 844.72 6559
Bytes/Sec 832.31 kB 124.73 kB 1.02 MB
55k requests in 10s, 8.29 MB read
 15 middleware
------- toa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 10.08 5.07 57
Req/Sec 4733.9 969.03 5539
Bytes/Sec 813.47 kB 166.77 kB 950.27 kB
47k requests in 10s, 8.09 MB read
 15 middleware
------- trek -------
Hello World
Stat Avg Stdev Max
Latency (ms) 7.57 2.45 47
Req/Sec 6248.82 1321.65 7635
Bytes/Sec 691.11 kB 145.3 kB 851.97 kB
69k requests in 11s, 7.63 MB read

30 middleware

 30 middleware
------- express -------
Hello World
Stat Avg Stdev Max
Latency (ms) 14.45 4.73 110
Req/Sec 3338.37 541.38 4283
Bytes/Sec 699.3 kB 113.42 kB 917.5 kB
37k requests in 11s, 7.71 MB read
 30 middleware
------- koa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.14 2.88 76
Req/Sec 5783.6 927.97 6783
Bytes/Sec 871.63 kB 137.82 kB 1.05 MB
58k requests in 10s, 8.73 MB read
 30 middleware
------- toa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 9.82 4.22 45
Req/Sec 4866.5 305.97 5127
Bytes/Sec 829.03 kB 56.38 kB 884.74 kB
49k requests in 10s, 8.32 MB read
 30 middleware
------- trek -------
Hello World
Stat Avg Stdev Max
Latency (ms) 6.26 1.44 49
Req/Sec 7604.55 749.25 8119
Bytes/Sec 844.52 kB 85.09 kB 917.5 kB
84k requests in 11s, 9.28 MB read

50 middleware

 50 middleware
------- express -------
Hello World
Stat Avg Stdev Max
Latency (ms) 11.18 3.03 52
Req/Sec 4253.91 756.59 4991
Bytes/Sec 892.18 kB 158.13 kB 1.05 MB
47k requests in 11s, 9.83 MB read
 50 middleware
------- koa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 8.47 2.83 47
Req/Sec 5566.7 909.66 6583
Bytes/Sec 835.58 kB 133.51 kB 1.02 MB
56k requests in 10s, 8.4 MB read
 50 middleware
------- toa -------
Hello World
Stat Avg Stdev Max
Latency (ms) 12.66 5.5 60
Req/Sec 3794.6 752.37 4671
Bytes/Sec 646.35 kB 123.34 kB 819.2 kB
38k requests in 10s, 6.49 MB read
 50 middleware
------- trek -------
Hello World
Stat Avg Stdev Max
Latency (ms) 7.66 2.89 59
Req/Sec 6124 852.52 7631
Bytes/Sec 677.48 kB 91.67 kB 851.97 kB
61k requests in 10s, 6.8 MB read

Enjoy!

<h1>Trek Engine</h1>

<p>Micro, Elegant, Fast, Lightweight, Expressive middleware for Modern Node.js</p>

</div>

Features

Micro.
Elegant.
Fast.
Lightweight.
Expressive.

Installation

$ npm install trek-engine

Hello Trek Engine

const co = require('co')
const Engine = require('trek-engine')
const app = new Engine()
// middleware
app.use((ctx, next) => {
 // return promise
 return next()
})
// async/await
app.use(async (ctx, next) => {
 await next()
})
// generator
app.use(co.wrap(function * (ctx, next) {
 yield next()
}))
// response
app.use({ res } => {
 res.end('Hello Koa')
})
app.run(3000)

Benchmarks

See express vs koa vs toa vs trek-engine.

express
koa v2
toa
trek-engine

fundon.me · GitHub @fundon · Twitter @_fundon

3 回复

magicdawn 1楼•9 年前

中间件使用了生成器

迭代器 ? https://github.com/trekjs/middleware/blob/master/index.js#L5 BTW: 没有 tags 差评 😂

fundon 2楼•9 年前作者

@magicdawn 嗯是迭代器

fundon 3楼•9 年前作者

@magicdawn 打 tag 了, 忘记 push 了 😂