Tag Archives: network

The importance of network latency when scaling Magento horizontally

Cloud ServerThe sweet spot of any Magento project from hosting standpoint is when traffic patterns allow that all services store in question needs, fit on a single more or less powerful machine. Having that singe IP address you connect to in order to deploy code, do system upgrades when traffic is low and monitor when traffic is high is super convenient. But as store grows in terms of traffic, sooner or later you'll be forced to think horizontally. This usually means adding load balancer, couple of frontend nodes as well as dedicated servers for other services your store requires. In other words, you need more machines configured in private network working together in order to serve more traffic. There are many challenges to setting up and maintaining such system, with having fast network through which your nodes communicate being the most important component of your infrastructure.

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Manage GSM mobile broadband connections without Network Manager (Red Hat Linux, CentOS, Fedora)

Red Hat LogoIn my last article I have described how to manage manage GSM mobile broadband connections without Network Manager on Debian based distributions like Ubuntu and Linux Mint.

In this article I will show you how to do the same on Red Hat Linux based Linux operating systems like CentOS and Fedora. I recommend that you read "Introduction" and "My hardware and ISP configuration" paragraphs from my last article to get acquainted with my exact hardware and Internet Service Provider configuration. Required procedure is a bit simpler for Red Hat Linux, CentOS and Fedora because there is some abstraction in accessing basic pppd options. Also Red Hat network configuration files are differently arranged (better than Debian in my opinion) and because of all that this article is a bit simpler to follow than it's Debian counterpart.

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Manage GSM mobile broadband connections without Network Manager (Ubuntu, Linux Mint, Debian)

Debian LogoRecent Network Manager versions like Network Manager 0.9.1 from Ubuntu 11.10 and Network Manager 0.9.2 from Fedora 16 and aren't working well with both of my GSM mobile broadband modems, Huawei E220 and ZTE MF100. Actually this aren't first Network Manager version that refuse to work with the same hardware, there were some problems back in the good old Ubuntu 9.10 days. Because of that I had to learn managing my mobile broadband network connections without Network Manager. In this article I will do my best to point you in the right direction to managing your GSM mobile broadband connections from terminal without Network Manager on Ubuntu, Linux Mint and Debian based operating systems.

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OpenSuse 11.4 Ralink RT3090 driver rpm packages

OpenSUSE LogoIn one of my last articles I've wrote about excellent Ralink RT3090 Ubuntu driver PPA by Launchpad user Markus Heberling, thanks Markus for your work. Here is the link to this article:

Wireless network Ralink RT3090 Ubuntu driver PPA

Recently I've had to use OpenSuse 11.4 on a laptop with RT3090 wireless network adapter. On OpenSuse you are left with open source drivers that work great but not as good as Ralink proprietary drivers. In this article I'm bringing you OpenSuse 11.04 rpm packages with Ralink RT3090 proprietary wireless driver for 32-bit architecture. I'm also providing OpenSuse src.rpm packages you can use to rebuild this driver package for your kernel architecture or kernel version. For this packages I've backported all Markus Heberling Ralink rt3090 driver patches from his Ubuntu RT3090 PPA.

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Ubuntu fix network stopped working after resume from sleep

I'm currently using Ubuntu Lucid on my HP Compaq CQ56 laptop. It is really Linux friendly laptop, but like every other configuration it needs some tweaking to really shine. In this post I will show you how to fix problem with ethernet network not working after resume from sleep. This procedure works for ethernet or wifi network devices, or any other hardware device that makes problems after resume from sleep.

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