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Questions tagged [scaling]

142 questions
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Is it pointless to scale your containers in the same physical server?

This is a question I couldn't find an answer Googling, maybe the terms I should search are different. Suppose you have a containerized app, NGINX Container, PHP Container and DB Container. You need to increment processing so you understand that you…
JorgeeFG
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AWS ECS scaling with custom load balancer

I am currently using AWS Elastic Container Service. It is running with a HAProxy server acting as our load balancer, along with a lambda that acts as a service discovery mechanism for the servers. Our servers have a custom scaling metric based on…
Ramzi C.
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My system administrator set up 2 databases that sync. Master-Master. However, these two databases are not syncing

DB1 and DB2. I made changes to DB1, and it does not seem to be on DB2. When I do "SHOW SLAVE STATUS\G" on DB2, there seems to be an error: mysql> show slave status\G *************************** 1. row *************************** …
Alex
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Using HAProxy for syslog traffic at scale

I have an environment that generates a frankly ludicrous amount of Syslog traffic - this is mostly due to a culture of leaving debug-level logging on in production applications (and changing this tendency is unfortunately off the table and way above…
Mikey T.K.
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Do slow nodes bottleneck a Galera Cluster?

Let's say I have a 5 node cluster, with 3 SSD RAID 10 nodes and a 2 SSD RAID 1 nodes. Will the RAID 1 nodes slow down the entire network? How do the Galera cluster writes work? Does it have to wait until the slowest node (RAID 1) finish writing the…
Kevin
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Configuring Redis for a read heavy application

Redis connection timeout even after upgrading to elasticache m4.xlarge We are facing connection timeout.Our cache size is hardly 1.5Gb.We have been using m4.large instance and there was around 150-200 connection to instance.We tried adding two read…
tessie
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Advice about scaling out IIS and SQL Server 2014 on Windows Server 2012R2

We are running a dual processor server E5-2630 V3 / 64 GB RAM with Windows Server 2012 R2, this server has IIS and SQL Server 2014 installed, only one web service is running to serve a mobile application. The server is serving almost 500,000 active…
Ahmed Galal
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AWS autoscaling cooldown

I have 1 instance. If latency more then 1 second for 3 minutes, it will add up another instance. And here the problems arises: after 50 min(because of scaling cooldown) this 2nd instance terminates. And, if load is still high, latency jumps back to…
Eugene
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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 structure: HaProxy DDoS Protected VPS -> Three Varnish…
Nilnoc
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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 servers. As I understand it, you have to grant…
inorganik
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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 40,000 http request per second any suggestions?
RollRoll
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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 facing is that sometimes it takes a long time for…
naiquevin
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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 testing. When I generate the load and hit using the…
userkn
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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 the need for more CPU might increase soon. We are…
miccet
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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 the TCP Window size?
MatBanik
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