a06f28ddb7
We don't want other types of error end up in our cache, since it'll likely evict perfectly good content.
118 lines
3.2 KiB
JavaScript
Executable File
118 lines
3.2 KiB
JavaScript
Executable File
#!/usr/bin/env node
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/* jshint node: true */
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'use strict';
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// This needs to be here to make sure the pipe stays open.
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// We're waiting until the stdin pipe gets closed (e.g. because the parent
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// process dies)
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process.stdin.on('readable', function() {});
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process.stdin.on('end', function() { process.exit(0); });
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var fs = require('fs');
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var express = require('express');
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var app = express();
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// We're manually setting Etag headers.
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app.disable('etag');
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app.get('/test', function (req, res) {
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if (req.query.modified) {
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res.setHeader('Last-Modified', (new Date(req.query.modified * 1000)).toUTCString());
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}
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if (req.query.expires) {
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res.setHeader('Expires', (new Date(req.query.expires * 1000)).toUTCString());
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}
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if (req.query.etag) {
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res.setHeader('ETag', req.query.etag);
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}
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if (req.query.cachecontrol) {
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res.setHeader('Cache-Control', req.query.cachecontrol);
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}
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res.send('Hello World!');
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});
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var cacheCounter = 0;
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app.get('/cache', function(req, res) {
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res.setHeader('Cache-Control', 'max-age=30'); // Allow caching for 30 seconds
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res.send('Response ' + (++cacheCounter));
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});
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app.get('/revalidate-same', function(req, res) {
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if (req.headers['if-none-match'] == 'snowfall') {
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// Second request can be cached for 30 seconds.
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res.setHeader('Cache-Control', 'max-age=30');
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res.status(304).end();
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} else {
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// First request must always be revalidated.
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res.setHeader('ETag', 'snowfall');
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res.setHeader('Cache-Control', 'must-revalidate');
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res.status(200).send('Response');
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}
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});
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app.get('/revalidate-modified', function(req, res) {
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var jan1 = new Date('jan 1 2015 utc');
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if (req.headers['if-modified-since']) {
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var modified_since = new Date(req.headers['if-modified-since']);
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if (modified_since >= jan1) {
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res.setHeader('Cache-Control', 'max-age=30');
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res.status(304).end();
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return;
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}
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}
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// First request must always be revalidated.
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res.setHeader('Last-Modified', jan1.toUTCString());
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res.setHeader('Cache-Control', 'must-revalidate');
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res.status(200).send('Response');
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});
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var revalidateEtagCounter = 1;
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app.get('/revalidate-etag', function(req, res) {
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res.setHeader('ETag', 'response-' + revalidateEtagCounter);
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res.setHeader('Cache-Control', 'must-revalidate');
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res.status(200).send('Response ' + revalidateEtagCounter);
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revalidateEtagCounter++;
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});
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app.get('/not-found', function(req, res) {
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res.status(404).send('Not Found!');
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});
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app.get('/permanent-error', function(req, res) {
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res.status(500).send('Server Error!');
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});
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var temporaryErrorCounter = 0;
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app.get('/temporary-error', function(req, res) {
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if (temporaryErrorCounter === 0) {
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res.status(500).end();
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} else {
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res.status(200).send('Hello World!');
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}
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temporaryErrorCounter++;
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});
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app.get('/delayed', function(req, res) {
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setTimeout(function() {
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res.status(200).send('Response');
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}, 200);
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});
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app.get('/load/:number(\\d+)', function(req, res) {
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res.send('Request ' + req.params.number);
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});
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var server = app.listen(3000, function () {
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// Tell parent that we're now listening.
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process.stdout.write("OK");
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});
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