The ability of a system, network, or process, to handle growing amounts of work in a graceful manner or its ability to be enlarged to accommodate that growth.

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2answers
448 views

https scalability for concurrent connections

I am a building a site right now that has a lot of chat messages and social communication moving between users in both real-time and accessed through archives (text material, not images). I want to ...
3
votes
1answer
453 views

Multiple DNS names and IP address to make load balancing more efficient in an Exchange CAS Array

The tl;dr problem The CAS server occasionally gets one or two NAT'ed IP addresses that have several hundred users behind it. That is bad for scalability. The tl;dr solution Have the NAT'ed ...
2
votes
1answer
143 views

How to launch EC2 instance with preconfigured AWS Alarm

I wan't to kill a specific instance when some of it's hardware consumption metrics reaches a certain level. If i create an alarm for the scaling group (setting maximum cpu consumption threshhold to ...
1
vote
1answer
92 views

How to get approx 500request/sec in HAProxy and Tomcat7 with Apache

I have 4 intstances of Tomcat 7 server and deployed my web App on all the instances. I am using HAProxy load balancer for load balancing. In front end I am using Apche2 web server and behind Tomcat 7. ...
1
vote
1answer
132 views

Extremely high loads despite Caching

Okay I've got a nice dedicated server running CentOs 6 with 16gb of ram, dual xenon processors, etc. However I've been experiencing high loads due to mysql. Randomly the load will go below 1.0, and ...
1
vote
1answer
68 views

Is it a good idea to separate the Database and the website files in 2 shared hosting?

Do you think If I did separate the db and the files will make it performs better? and is this easy thing to do? What if I upgrade later on to 2 VPS as well, can I do the same thing without affecting ...
1
vote
1answer
427 views

Which requests cause a w3wp process to grow considerably?

On a production environment, how can one discover which Asp.Net http requests, whether aspx or asmx or custom, are causing the most memory pressure within a w3wp.exe process? I don't mean memory leaks ...
0
votes
1answer
468 views

How can I determine Breaking point of my Web application using JMeter?

How can I determine Breaking point of my Web application using JMeter? I have executed the JMeter Testplan with different concurrent users load. EX. 300 users(0% error), 400 users(7% error in a ...
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1answer
315 views

Distributed SSL session cache

Need to setup a scalable backend infrastructure for a mobile app. Connections to the API need to be SSL encrypted. To achieve a simple scalable solution i don't want to terminate SSL at the load ...
0
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1answer
501 views

Load testing nginx inside AWS

I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other ...
0
votes
1answer
80 views

Utilizing two servers (LAMP)

I currently have my web app on a single cloud server. Been doing this for a few months now and I have EVERYTHING on this instance (app, cron scripts, mysql, svn, dev environment, etc). The site is ...
2
votes
0answers
59 views

Scaling large numbers of small customer J2EE webapps

We're allowing customers to create websites on our SaaS app. We currently use Jetty as the app server, but we could use anything J2EE. I'd like to be able to scale customer webapps across our ...
2
votes
0answers
408 views

Highly-available, Web-accessible and scalable deployment of statsd and graphite

I'd like to setup statsd/graphite so that I can log JS apps running on HTML devices (ie. not in a contained LAN environment, and possibly with a large volume of incoming data that I don't directly ...
1
vote
0answers
129 views

Scaling a video processing application on EC2?

I am approaching the need to scale a video-processign application that runs on EC2. So far the setup is one machine: Backbonejs frontend Rails 3.2 Postgresql Resque + S3 for storage The flow of ...
1
vote
0answers
75 views

Whats the next scalability step after seperate mysql farms?

I'm running a saas service which is growing rapidly. The customers are ecommerce websites and we get hit on every page view on each of our customers sites (currently 10M's hits/day). The current ...
1
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0answers
108 views

How can I scale my RoR applications?

I am developing a Ruby On Rails application and would like to deploy in a production environment. I have multiple identically configured Ubuntu web servers I can use but I don't know how to scale ...
0
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0answers
7 views

Benefits of using OpenStack with Apache Mesos For A Single Application Deployment Environment

I want to pull all resources together and host a Web application, and would like to scale out the bare metals I have; down the line. So I want to use Apache Mesos to gather all the resources for this ...
0
votes
0answers
47 views

Direct server return loadbalancer for mariadb galera cluster with 2 networks

Is it possible to configure LVS (keepalived) loadbalancer with direct server return (DSR) for 2 leg network setup? The desired architecture is as follows: mariadb galera cluster, where each node has ...
0
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0answers
49 views

Scale automatically by monitoring the load in app server

I have a regular setup with 4 droplets in DigitalOcean. One for Haproxy as load balancer, two for app servers, run same Django application and one for database. It's quite easy to add another app ...
0
votes
0answers
233 views

Horizontal Versus Verticale Scaling for Large Scale RoR Application (High CPU and Memory Usage)

We are launching a high demand (several hundred simultaneous users) Ruby on Rails application and we are trying to determine the best way to scale. Currently, we have a setup that follows this ...
0
votes
0answers
89 views

Dedicated server vs VPS: advice on scaling site

We could use advice on a scaling/ops issue. We have a simple mobile app that runs on Rails 3.2.12 and uses MongoMapper instead of ActiveRecord. There is one database call that sporadically performs ...