MiniProfiler for Node.js
Node.js implementation of Stack Exchange's MiniProfiler
Demonstration
Visit http://miniprofiler-demo.herokuapp.com for a live demonstration.
Installation
$ npm install miniprofiler
You can hook up your application with any of the following packages are available on npm:
Name | About | Version |
---|---|---|
miniprofiler-http |
Profile http(s) requests | |
miniprofiler-pg |
Profile pg queries | |
miniprofiler-redis |
Profile redis calls |
Usage
Simple usage with express.js
server.js
var express = require('express')
, miniprofiler = require('miniprofiler')
, app = express();
app.set('view engine', 'pug');
app.use(miniprofiler.express());
app.get('/', function(req, res) {
req.miniprofiler.step('Step 1', function() {
req.miniprofiler.step('Step 2', function() {
res.render('index');
});
});
});
app.listen(8080);
index.pug
doctype html
html
head
title MiniProfiler Node.js Example
body
h1 Home Page
| !{miniprofiler.include()}
When visiting localhost:8080
, you should see this.
API
miniprofiler.{framework}([options])
Replace {framework}
with koa, express or hapi.
This function returns a framework specific middleware that is responsible for initializing MiniProfiler on each request.
options
object properties
Property | Default | Description |
---|---|---|
enable | Always returns true | function(req, res) => boolean; this function is used to determine if the profiler should be enabled for the current request |
authorize | Always returns true | function(req, res) => boolean; this function is used to determine if the current request should be able to see the profiling results |
miniprofiler.{framework}.for([provider])
provider
is a call for any of the supported providers listed here.
miniprofiler.configure([options])
options
object properties
Property | Default | Description |
---|---|---|
storage | InMemoryStorage({ max: 100, maxAge: 1000 * 60 * 60 }) | InMemoryStorage or RedisStorage; used to store or fetch a string JSON blob of profiling information |
ignoredPaths | [ ] | string array ; any request whose url property is in ignoredPaths will not be profiled |
trivialDurationThresholdMilliseconds | 2.5 | double ; any step lasting longer than this will be considered trivial, and hidden by default |
popupShowTimeWithChildren | false | boolean ; whether or not to include the "time with children" column |
popupRenderPosition | left | 'left', 'right', 'bottomLeft' or 'bottomRight' ; which side of the screen to display timings on |
options.storage
examples
InMemoryStorage
miniprofiler.configure({
storage: miniprofiler.storage.InMemoryStorage({ lruCacheOptions });
})
Refer to lru-cache documentation for lruCacheOptions
.
RedisStorage
miniprofiler.configure({
storage: miniprofiler.storage.RedisStorage(client);
})
Where client
is an instance of redis.createClient.