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Use http.Agent with keepalive set to true

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Instantiate HTTP(S) Agents with keepAlive set to true.
This will reduce the request time for consecutive requests by
reusing the existing TCP connection, thus eliminating the time used
for setting up new TCP connections. The reduced response time can
be as much as 200ms.
This commit is contained in:
Mikko Koski 2018-03-17 11:39:32 +02:00
parent 806ac31e3c
commit 0c6cb3c950
1 changed files with 11 additions and 0 deletions
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11
server/index.js
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@ -19,6 +19,8 @@ require('source-map-support').install();
// Configure process.env with .env.* files
require('./env').configureEnv();
const http = require('http');
const https = require('https');
const express = require('express');
const helmet = require('helmet');
const compression = require('compression');
@ -133,6 +135,13 @@ const noCacheHeaders = {
'Cache-control': 'no-cache, no-store, must-revalidate',
};
// Instantiate HTTP(S) Agents with keepAlive set to true.
// This will reduce the request time for consecutive requests by
// reusing the existing TCP connection, thus eliminating the time used
// for setting up new TCP connections.
const httpAgent = new http.Agent({ keepAlive: true });
const httpsAgent = new https.Agent({ keepAlive: true });
app.get('*', (req, res) => {
if (req.url.startsWith('/static/')) {
// The express.static middleware only handles static resources
@ -160,6 +169,8 @@ app.get('*', (req, res) => {
const sdk = sharetribeSdk.createInstance({
clientId: CLIENT_ID,
baseUrl: BASE_URL,
httpAgent: httpAgent,
httpsAgent: httpsAgent,
tokenStore,
typeHandlers: [
{