Databases
StackOverflow2013
Postsdbo
POSequelize querying a lot slower than Knex
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSequelize querying a lot slower than Knex
    primarykey
    data
    text
    <p>I have the following code:</p> <pre><code>var apiLogger = require(__dirname + '/../configurations/logger').api; var Knex = require('knex'); var microtime = require('microtime'); var Sequelize = require("sequelize"); database = new Sequelize('MYDATABASE', 'MYUSERNAME', 'MYPASSWORD', { host: "MYHOST", port: 3306, dialect: 'mysql', pool: { maxConnections: 5, maxIdleTime: 30 } }); Knex.Initialize({ client: 'mysql', connection: { host : 'MYHOST', user : 'MYUSERNAME', password : 'MYPASSWORD', database : 'MYDATABASE', charset : 'utf8' } }); exports.test = function(req, res){ apiLogger.info('Request made to /api/test'); var start = microtime.nowDouble(); database.query('SELECT id, username FROM Users ORDER BY RAND() LIMIT 10').then(function(data) { console.log('query time : ' + (microtime.nowDouble() - start)); res.json(data); }, function(data) { res.json(data); }); }; exports.test2 = function(req, res){ apiLogger.info('Request made to /api/test2'); var start = microtime.nowDouble(); Knex.Raw('SELECT id, username FROM Users ORDER BY RAND() LIMIT 10').then(function(data) { console.log('query time : ' + (microtime.nowDouble() - start)); res.json(data); }, function(data) { res.json(data); }); }; </code></pre> <p>If I execute the code in <code>exports.test</code> (an api call of <code>/api/test</code>) about 5 seconds apart from each other, the average response is about 430ms and this is the Sequelize code.</p> <p>If I run the code from <code>exports.test2</code> (and api call of <code>/api/test2</code>) 5 seconds apart, the first call is 430ms but the call after that are about 100ms and that is Knex.</p> <p>I should mention if I run the <code>exports.test</code> code less than a second apart from each other, I get the about 100ms response time and with the <code>exports.test2</code> code, I can wait 2-3 minutes between calls and still get the 100ms response time.</p> <p>Is there some sort of configuration I am missing with Sequelize that is causing it to be much slower compared to Knex? Why would requests made minutes apart with Knex be much faster than the same request made seconds apart with Sequelize? </p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USgustavohenke
    1. USryanzec
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COProbably caching...
      singulars
      1. POSequelize querying a lot slower than Knex
      1. USNamphibian
    2. COWell I doubt Knex is caching since I am doing ORDER BY RAND() which makes the results different each request. I understand why the first query for each take longer, that is because MySQL caches the data after the first request but if it was MySQL caching, both libraries would benefit unless Sequelize forces MySQL not to use the cache which A. not sure if that is possible and B. there would be no good reason for that.
      singulars
      1. POSequelize querying a lot slower than Knex
      1. USryanzec
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload