Performance hit with sequalize on lambda?

I am you performance issues with (i believe) sequalize on lambda and am wondering if this is just the norm. For example, I have a call where my app thinks the timing is 97 mc but lambda actually takes 1102 ms. The timings of my test lambda without sequalize seem to make more sense. Anyways, any thoughts are appreciated.

// my pool

pool: {
max: 1,
min: 0,
idle: 100

},

// snippet

module.exports.handler = function (event, context, cb) {
  console.time("reqstart")
  var model = require('../models');
  var group;
    model.Group.create({})
  .then(function (localGroup) {
    console.timeEnd("reqstart")
    return cb(null, {
      message: 'Go Serverless! Your Lambda function executed successfully! '+JSON.stringify(event, null, 2)
   });
})
.catch(function (err) {
  console.log(err);      
});

};

// cloudwatch logs

START RequestId: 7384364a-2b93-11e6-9d8f-83d013cc53d6 Version: 60  
2016-06-06T03:04:59.120Z    undefined   Executed (default): INSERT INTO "Groups"  ("id","createdAt","updatedAt") VALUES ('54d96b10-7e24-4c0b-ac26-6f2444f65978','2016-06-06 03:04:59.030 +00:00','2016-06-06 03:04:59.030 +00:00') RETURNING *; 10 
2016-06-06T03:04:59.123Z    7384364a-2b93-11e6-9d8f-83d013cc53d6    reqstart: 97ms
END RequestId: 7384364a-2b93-11e6-9d8f-83d013cc53d6 
REPORT RequestId: 7384364a-2b93-11e6-9d8f-83d013cc53d6  Duration: 1102.49 ms               Billed Duration: 1200 ms Memory Size: 1024 MB    Max Memory Used: 41 MB

[atwoodjw]

Found the issue after RTFM.

http://docs.aws.amazon.com/lambda/latest/dg/nodejs-prog-model-context.html#nodejs-prog-model-context-properties

You have to set context.callbackWaitsForEmptyEventLoop = false. Otherwise, the process isn’t terminated until the event loop is empty.

Hope this helps someone.

[marlomgirardi]

Unfortunately, Sequelize is not good for lambda because the higher cost is the startup…

With sequelize it takes almost 1s to return the request and with mysql2 in most cases lower than 100ms.

2018-05-30T15:42:11.370Z	04395f47-6420-11e8-9c1a-95b27db38b01	DBREQUEST: 141.998ms
2018-05-30T15:42:11.371Z	04395f47-6420-11e8-9c1a-95b27db38b01	REQUESTEND: 622.803ms
END RequestId: 04395f47-6420-11e8-9c1a-95b27db38b01
REPORT RequestId: 04395f47-6420-11e8-9c1a-95b27db38b01	Duration: 623.37 ms	Billed Duration: 700 ms Memory Size: 128 MB	Max Memory Used: 48 MB