jbuilder 构建一个包含您的数据的大哈希,然后ActiveSupport::JSON
将其转换为 json。如下微基准测试所示,有更快的 json 发射器(确保您安装了 multijson 和 yajl-ruby gem)
require 'benchmark'
require 'active_support'
require 'multi_json'
sample = {menu: {
header: "SVG Viewer",
items: [
{id: "Open"},
{id: "OpenNew", label: "Open New"},
nil,
{id: "ZoomIn", label: "Zoom In"},
{id: "ZoomOut", label: "Zoom Out"},
{id: "OriginalView", label: "Original View"},
nil,
{id: "Quality"},
{id: "Pause"},
{id: "Mute"},
nil,
{id: "Find", label: "Find..."},
{id: "FindAgain", label: "Find Again"},
{id: "Copy"},
{id: "CopyAgain", label: "Copy Again"},
{id: "CopySVG", label: "Copy SVG"},
{id: "ViewSVG", label: "View SVG"},
{id: "ViewSource", label: "View Source"},
{id: "SaveAs", label: "Save As"},
nil,
{id: "Help"},
{id: "About", label: "About Adobe CVG Viewer..."}
]
}}
MultiJson.engine = :yajl
Benchmark.bmbm(5) do |x|
x.report 'activesupport' do
1000.times {ActiveSupport::JSON.encode(sample)}
end
x.report 'yajl' do
1000.times {MultiJson.encode(sample)}
end
end
在我的机器上,这会产生
user system total real
activesupport 1.050000 0.010000 1.060000 ( 1.068426)
yajl 0.020000 0.000000 0.020000 ( 0.021169)
即对样本对象进行 1000 次编码,主动支持花费了 1 秒多的时间,MultiJson(使用 yajl 引擎)花费了 21 毫秒。
JBuilder 被硬编码为使用 ActiveSupport::JSON,但是 MultiJSON(一个允许您在 json 库之间切换的 gem)是一个微不足道的插件,并且已经是 ActiveSupport 的依赖项 - 请参阅我的 jbuilder 的分支。我已经打开了一个拉取请求,但在那之前你可以尝试使用这个 fork(或创建你自己的 - 这是一个单行更改)