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6
votes
2answers
206 views

AWS - how to serve faster to oversea users

We have our infras relying on AWS in the us-east-1 region. (EC2, CloudFront, RDS, ElastiCache) We are now having more and more users from the APAC. Users start to complain about network speed to our ...
0
votes
0answers
45 views

Google App Engine vertical scaling

I know Google Cloud (Google App Engine) can autoscale instances horizontally: you have 1 server with certain parameters, when it's overloaded autoscaler launches new server and balances load between ...
0
votes
0answers
81 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
1answer
116 views

pushing apache2 past 1500 concurrent connections

I am trying to scale to 4000 concurrent connections on a ubuntu/apache box. It is 8 core / 64gb ram, so it is not hitting memory or cpu, or any resources for that matter. The problem is with ...
0
votes
0answers
22 views

Horizontal scaling of a file processor and generator web application

I am working on a web application that has a file processor and generator module. So far we have not had to worry about where the file actually is because we have had exactly one machine. Now that we ...
3
votes
1answer
1k views

How can I make Microsoft Management Console high-DPI aware in Windows 8.1?

Since Windows 8.1 doesn't allow system-wide "Windows XP style" high DPI support, how can I make the Microsoft Management Console apps (mmc.exe) high-DPI aware? There is no "Troubleshoot compatibility" ...
1
vote
2answers
112 views

Load Balancing MongoDB

I have an application written in java with tomcat that I am ready to start scaling for production. As I understand it, i shouldn't use a load balancer with mongodb router instances as it can cause ...
0
votes
0answers
65 views

Azure: Could not automatically scale XXXX because monitoring data was not found

I've recently tried turning on the autoscaling feature on one of our cloud computing services, and I was simply unable to activate it. I've attached the settings configuration used to set up scaling ...
-1
votes
1answer
43 views

What kind of scaling method is it, when you add new software to a single server to handle more users? [closed]

I have read about scaling (in terms of terminology and methods). This got me confused about the following: On a single computer, running a web server (say apache), if the system administrator adds a ...
1
vote
2answers
262 views

How do I force apache to drop requests after a predetermined amount of time?

I'm setting up a system that has hard requirements on the response time. How do I force Apache2 to drop requests in the queue after 200ms if it hasn't been served? Background One of our internal ...
0
votes
3answers
60 views

Grant mysql access to remote servers without IP

I'm setting up a hosting scheme that will involve a master server and clone servers all accessing a remote mysql DB on its own server. As traffic increases/decreases I will be adding or removing clone ...
2
votes
1answer
502 views

Can I use MongoDB with Amazon EC2 small instance?

I want to move my MongoDB from a virtual server to amazon web services. I know MongoDB provides a preconfigured AMI, with three provisioned EBS volumes. But this is only available for m1.large ...
13
votes
5answers
721 views

How do services with large ingest rates install enough hard disks fast enough?

Amazon, Facebook and Google must take in TBs if not PBs per day, so does that mean they have people continuously installing new hard disks and cables in new racks in the same way you might build a ...
5
votes
2answers
153 views

HAProxy not balancing server load fairly

HAProxy doesn't seem to keep the connections to the servers balanced. Keep this in mind: using HAProxy v1.3.26 5 equally balanced server specs algorithm is round robin, but no weights are applied ...
0
votes
2answers
194 views

What ports to open in aws security group for aws?

I am building the backend for a turn based gamed. My experience is mostly with a lamp stack; I've dabbled in nginx on a node side project. I just read Scaling PHP Applications by Stephen Corona of ...
0
votes
2answers
314 views

How can I perform IIS stress test 40,000 http requests per second?

I'm the co-founder of a startup which is in the beginning and growing rapidly. I want to test an stress scenario on my IIS server to help figure out the resource needed from our cloud service, like ...
0
votes
1answer
124 views

How do I go about finding the bottleneck in a slow web based chat application

I am working on a one-to-one chat application running in production. It uses StropheJS to connect to Ejabberd server over BOSH (using ejabberd's default connection manager). The main problem we are ...
0
votes
1answer
96 views

AWS Beanstalk / load balancer doesnt distribute load

I have two instances of EC2 running with Tomcat servers. I deployed my war using beanstalk. My load balancer has both the EC2 machines listed under the Instances tab. I'm trying to do some load ...
4
votes
5answers
2k views

AWS: Multi-region setup using single RDS instance

I'm trying to scale our web application (PHP, MySQL, memcache) in a multi-region scheme. Currently we are using a setup with two EC2 instances behind an ELB and an RDS instance, all of them in US-EAST ...
0
votes
1answer
55 views

Scaling Rails 2.x application with more app servers

I'm thinking of a setup for our rather popular website to be able to scale on the CPU side of things. We are running quite a few CPU intensive image conversion jobs at random times (user input) and ...
3
votes
1answer
6k views

How to horizontally scale SSL termination behind HAProxy load balancing?

I've been looking around and no one seems to be trying to scale SSL termination the way I am and I'm curious as to why my approach seems so uncommon. Here's what I want to do followed by why: ...
0
votes
0answers
88 views

Is it time to add a server [duplicate]

This question is about figuring out if horizontal scaling by adding servers is the next step or not. Here is the context: About 1400 concurrent users at peak time (between 11:00am-4:00pm) in Google ...
2
votes
0answers
44 views

scaling website to perform equally fast worldwide [closed]

Our website is growing and we get more and more customers all around the world. We use Nginx, PHP and MySQL Our servers are in UK, so it is fast in Europe, but the further we got away from servers - ...
2
votes
1answer
82 views

MongoDB PHP EC2 Setup Configuration

I am new to web development and server set up. I am looking for some advice or a link to a tutorial on setting up a production system up. Right now, I have a server (Ubuntu, Apache, MongoDB, and ...
1
vote
3answers
147 views

How to make a vm scale when demand for resource increases

i am having a server with 16 virtual core and 24G RAM,using Xen virtualization and ubuntu as dom0 Created 4 VMs (in para mode),each with different applications. CPU Load vary on each vm,somtimes ...
0
votes
1answer
224 views

TCP Windows scaling on Windows 2008 server

If found only this article on windows 2008 server or Windows 7 TCP Windows scaling. http://8help.osu.edu/3253.html Is there any other information that I can use to change registry that would modify ...
0
votes
4answers
75 views

What would be a quick fix in case of server downtime due to sudden high traffic?

Let's consider a scenario like below: A small web blog build based on LAMP stack and deployed on a shared hosting. Suddenly it becomes popular in one day and it gets million hits per day. Since the ...
1
vote
3answers
64 views

Localized database for customers

The company I work for, has just moved to AWS - and currently they have one very large central database with the instance currently located in America. However, one of their clients has requested ...
2
votes
3answers
4k views

Maximizing TCP connections on HAProxy load balancer

I am currently using HAProxy in order to load balance tcp connections from clients to my Erlang app server. The connection is persistent, which means I'm limited to roughly 64K clients on an optimized ...
0
votes
2answers
482 views

How to Plan for scale on my rackspace cloud server

I currently have a couple of cloud servers on Rackspace For application NGINX+PHP+Memcached+APC 2GB instance For Mysql Database 1GB instance Our site at the moment is not very heavy in terms of ...
0
votes
1answer
2k views

TCP Window Scaling. TCP scale factor not supported due to dynamic TCP Frame Size on windows 2008 server

PROBLEM Calling an asp webservice hosted by an ISP from our WCF service hosted on Windows 2008 Server is showing timeout/no response from webservice. DIAGNOSIS Using windows network monitor ...
0
votes
2answers
175 views

ftp.example.com pointing to many different servers

I wanted to setup something like this: ftp.example.com which points to different ftp servers. For example: 111.111.111.1 111.111.111.2 111.111.111.3 111.111.111.4 When someone connects ...
0
votes
3answers
216 views

What is the middleware in a typical Debian LAMP stack? [closed]

I am researching on the topic of scaling, and I discovered something called the middleware which is basically handling the requests, correct? If that is true, what is the middleware in a LAMP stack? ...
1
vote
0answers
62 views

What kind of things should I check acting as a DevOp of this app? [closed]

I'm working in the early stages of development of a Foursquare mashup. We get some information using the 4SQ API, but store our own "checkins" in our infrastructure (kind of the 4SQ "Checkin" but ...
1
vote
1answer
108 views

Mongodb in a single server then scaling

If I start with Mongodb on a single server, but foresee that I need to scale out, should I configure it in any specific way? I guess I am looking for tips from people who have gone down this route.
-1
votes
1answer
126 views

Book on Modern System Architecture for Web applications [closed]

I'm looking for some reading material on architecting and system admin tools etc for building web applications from small to large detailing the recommended and appropriate steps as you grow? In my ...
0
votes
3answers
147 views

How do multiple servers work in terms of databases? [closed]

I don't know an awful lot about servers, but I do know that there are many ways you can improve the performance of running a web application, in terms of hardware. For example, starting with a single ...
0
votes
1answer
99 views

Amazon AWS tutorial - Cannot redirect to service provided destination - try using AWS keys for authentication or check destination URL

I'm following the Amazon AWS tutorial and I have reached Step 6: Launch Amazon EC2 Instances Using Auto Scaling http://docs.amazonwebservices.com/gettingstarted/latest/wah-linux/ But when I run the ...
8
votes
2answers
842 views

Large VPN network (~600 servers) with OpenVPN

I'm doing a preliminary study for a contract to build a VPN network between ~600 remote servers running Linux CentOS 6 (+ their 600 private LANs). The network is supposed to be star-based, so that ...
2
votes
1answer
86 views

File storage for replicated front-end web servers?

We are a company running a website with ~800k unique visitors each month with a constant growth rate of 35-40%. We have just gone from having one server to a dedicated mysql database and an ...
0
votes
3answers
330 views

Scale out or scale up - Rackspace cloud servers

I have a small webserver running a couple of Django python apps, MySQL, and a wordpress multisite instance. It all runs on Apache with mpm worker, fastcgi and mod_wsgi + memcached The server is ...
2
votes
1answer
162 views

Scaling advice LAMP + Load balancers

My current setup: 1 Http Load Balancer 3 Apache Frontend Server 1 Mysql Load Balancer (Balancing reads across all three, writes go to master only) 3 Mysql Database Server (1 master, 2 slave) All ...
5
votes
3answers
1k views

How to allow elastic load balancer through port 80 in security groups?

I want to temporarily block port 80 for the outside world, but want the load balancer to pass through the firewall (via security group) so it won't see the instance as unhealthy. How can I do that? ...
1
vote
2answers
542 views

Small vs Medium EC2 instances for horizontal scaling with Elastic Load Balancer

I am having some debating around scaling Amazon EC2 instances. I have developed my app using ASP.NET, so I have to choose to go with a Windows EC2 instance. MySQL and images are served from other ...
1
vote
1answer
143 views

Scaling Amazon EC2 instanced when traffic to my app rises

I need your help about scalability on Amazon EC2 instanced. I have developed a web application using asp.net. I have decided that for start, I want to deploy it on a Medium High-CPU Windows Server ...
3
votes
4answers
3k views

Load balanced Drupal servers: a good way to share data among the servers?

I'm trying to get an overview of how i would go about creating a load balanced web server setup. Setting up the actual load balancer and adding two or more web servers seems fair enough. However, I ...
4
votes
1answer
191 views

Sharding MongoDB internationally with data stored based on location

We're looking to set up data centers globally and switch to a NoSQL database like MongoDB to support having our data distributed over these data centers (and as a pleasant side effect, introduce more ...
3
votes
2answers
331 views

Memcached scaling strategy

Currently I am running a production environment with 4 dedicated memcached servers, each of them having 48Gb of RAM (42 dedicated to memcache). Right now they are doing fine, but traffic and content ...
-2
votes
1answer
642 views

How many servers or what specs do I need to handle 100000 users? [closed]

I was just wondering how many servers or what specs should have my server (or servers) if I want to handle 100000 users considering that each user will login every three days. (10 times a month) ...
2
votes
1answer
297 views

Scaling by moving Database to Amazon RDS

We have a situation with an Application which is hosted on a dedicated server where we are anticipating a potential surge in traffic. The major bottleneck on the app is MySQL which is heavy on read ...